CN102946746B - Smoke and odor elimination filter, device and method - Google Patents

Abstract

A tube comprises: a combustion chamber with a plurality of ventilation holes, the combustion chamber being capable of receiving a cigarette; an inhalation path for drawing smoke from the combustion chamber through the plurality of concave bowl ventilation holes during inhalation; an exhalation filter; and an exhalation path for directing exhaled smoke through the exhalation filter during exhalation.

Description

Smoke and odor elimination filter, device and method

priority claim

This application claims priority to Provisional Patent Application Serial No. 61/327,064, filed April 22, 2010, entitled "Smoke and Odor Elimination Filters and Devices," from inventor Kelly Adamic. This application is a continuation-in-part of nonprovisional patent application Serial No. 12/871,500, filed August 30, 2010, entitled "Smoke and Odor Elimination Filters, Devices and Methods," by inventor Kelly Adamic .

Copyright Notice

Portions of the disclosure of this patent document contain copyrighted material. The copyright owner has no objection to anyone's facsimile reproduction of the patent document or the patent disclosure, as it appears in the Patent and Trademark Office's patent files or records, but otherwise reserves all copyright rights.

technical field

The present invention relates generally to smoking devices, and more particularly to smoke and odor eliminating filters, devices and methods.

Background technique

Smoking is the act of burning a flammable substance such as tobacco, marijuana or herbs and inhaling the resulting smoke. Combustion of this substance results in the release of active drugs, such as nicotine or THC, and makes them available to a smoker for absorption through the lungs. Today, the most common way of smoking is through mainly industrially manufactured and hand-rolled cigarettes using rolling paper. Other smoking tools include traditional pipes, cigars, hookahs and bongs, or bongs.

People smoke for pleasure, as part of rituals, in search of spiritual enlightenment, and for medicinal purposes. Smoking dates back as far as 5000 BC and has been documented in many different cultures around the world. The early evolution of smoking was associated with religious ceremonies, as offerings to the gods in purification ceremonies, or as a process of divination. Smoking has become commonplace.

It should be understood that while the recreational use of cannabis is illegal in many parts of the world, the medicinal use of cannabis is legal in many areas, including Canada, Austria, Germany, the Netherlands, Spain, Israel, Italy, Finland, and Portugal of. Licensing for medicinal marijuana varies from state to state in the United States, and some states have enacted laws allowing the consumption, possession, cultivation, and distribution of regulated marijuana for medicinal purposes.

Although smoking is commonplace and enjoyable, inhaling smoke can adversely affect a smoker's health. Carcinogens in tobacco or marijuana smoke can increase a smoker's risk of cardiovascular disease, lung disease, cancer, and other diseases. Many industrially manufactured cigarettes employ a filter to reduce the amount of nicotine, tetrahydrocannabinol (THC), tar, smoke, and particulate matter that a smoker inhales when a cigarette is burned. Commercially manufactured filters may comprise a variety of materials and may have a predetermined length, such as approximately thirty percent of the length of a cigarette. However, cigarette filters do not limit the protection of non-smokers or others located in the vicinity of a smoker.

Therefore, smoking can adversely affect the health of non-smokers, including non-smoking friends and family members of a smoker. When non-smokers are exposed to second-hand smoke, it is often called passive smoking. Non-smokers who inhale second-hand smoke absorb nicotine, THC, tar, smoke, particulate matter, and/or other chemical agents just like smokers. Passive smoking plays a central role in the debate on the harm and regulation of tobacco products. Since the early 1970s, the tobacco industry has viewed passive smoking as a serious threat to its commercial interests. Passive smoking has been cited as a motivation for stricter regulation of tobacco products and smoking bans in workplaces and indoor public facilities such as restaurants, bars, and nightclubs.

Even those who are not in the vicinity of a smoker can still subsequently suffer from the adverse effects of smoking. Smoking releases odors that can find their way into hair, clothing, and other surfaces even after the smoke is invisible. Some researchers call this residual smell "third-hand" smoke. Basically, the particles caused by smoking settle on the surface and can be measured long after the person has finished smoking.

What is needed is a method for preserving the mundane and enjoyable experience of smoking while reducing or eliminating the adverse effects of second and third hand smoke.

Contents of the invention

According to some embodiments, the present invention provides a tube comprising: a combustion chamber with a plurality of vent holes, the combustion chamber capable of containing a cigarette; configured to channel smoke from the combustion chamber through the combustion chamber during inhalation. An inhalation path drawn through the vent holes; an exhalation path configured to guide exhaled smoke through an exhalation filter during exhalation; and a mouthpiece connected to the inhalation path and the exhalation path.

The intake path may include a one-way intake valve between the combustion chamber and the mouthpiece. The tube may further include a cap on the combustion chamber, the cap creating a generally airtight suction seal with the combustion chamber. The tube cover may include an ignition port operable to allow access of a heat source to the combustion chamber. The mouthpiece of the tube may include an aperture configured to receive a cigarette. In some embodiments, the tube may include a shutter configured to substantially restrict airflow to the inhalation path when the cigarette reaches a predetermined length. In some embodiments, the tube may include a sliding contact block configured to generally restrict airflow to the inhalation path when the cigarette reaches a predetermined length, such as the length of a filter of the cigarette.

The one-way exhalation valve may be part of the exhalation filter. The exhalation filter may comprise an exhalation filter cartridge. The tube may further include an internal igniter for providing flame to the combustion chamber. The tube may further include a timed ignition switch for controlling the length of time a flame is delivered to the combustion chamber. The exhalation filter may include a housing, a high efficiency particulate air (HEPA) filter, and a foam core. The foam core may include a central hole extending the length of the foam core, and the foam core includes odor absorbing chemicals for removing odors from exhaled smoke.

According to some embodiments, the present invention provides a method comprising: burning a cigarette in a combustion chamber having a plurality of vent holes, the cigarette producing smoke; directing at least some portion of the smoke from the combustion chamber through the vent to a smoker, at least the portions of the smoke passing through a mouthpiece; receiving exhaled smoke from the smoker, the exhaled smoke passing through the mouthpiece; guiding the exhaled smoke to an exhalation filter; and passing through the Exhalation filters filter exhaled smoke.

Smoke from the combustion chamber may be directed to the smoker via a mouthpiece, and exhaled smoke may be received through the same mouthpiece. The method may further include preventing exhaled smoke from being delivered to the combustion chamber. The method may further include preventing smoke from the combustion chamber including air from an exhalation filter. The method may further include controlling the length of time a flame is delivered to the cigarette in the combustion chamber. The exhalation filter can include: a housing, a HEPA filter, and a foam core. The foam core may include a central hole extending the length of the foam core, and the foam core may include odor absorbing chemicals for removing odors from exhaled smoke.

According to some embodiments, the present invention provides a tube comprising: a combustion chamber with a plurality of vent holes, the combustion chamber including means for holding a cigarette; The smoke of the chamber is drawn through these vent holes; The equipment for directing at least a part of the smoke to a smoker; The equipment for receiving the exhaled smoke from the smoker; A device that directs exhaled smoke through an exhalation filter.

Description of drawings

Figures 1a to 1e illustrate a smoke and odor eliminating smoking pipe according to one embodiment.

Figure 2 is an exploded view of the tube of Figure 1 according to one embodiment.

Figure 3 is an exploded view of the flip top cap assembly of the tube of Figure 1 according to one embodiment.

4 is an exploded view of the flip top cover assembly of the tube of FIG. 2 positioned for connection to the bowl housing of FIG. 1 , according to one embodiment.

Figures 5a to 5f show internal details of the tube of Figure 1 according to one embodiment.

Figure 6 is a cross-sectional view of a smoke and odor eliminating smoking pipe according to one embodiment.

Figure 7 shows an exploded view of an exhalation tube according to one embodiment.

Figures 8a-8d show details of the exhalation tube of Figure 7 according to one embodiment.

Figures 9a-9e illustrate a smoke and odor eliminating smoking pipe according to one embodiment.

Figure 10a shows an exploded view of the tube of Figures 9a to 9e according to one embodiment.

Figure 10b shows an exploded view of the tube of Figures 9a to 9e according to one embodiment.

Figures 11a to 11c show details of the tube of Figures 9a to 9e according to one embodiment.

Figures 12a to 12c show the tube of Figures 9a to 9e according to one embodiment.

Figure 13 is a cross-sectional side view of a smoke and odor eliminating smoking pipe according to one embodiment.

Figure 14 is a cross-sectional side view of a smoke and odor eliminating smoking pipe according to one embodiment.

15 is a partial side view of the ignition button assembly of FIG. 14 according to one embodiment.

Figures 16a-16e illustrate an exhalation filter cartridge according to one embodiment.

Figures 17a and 17b show details of the exhalation filter cartridge of Figures 16a to 16e according to one embodiment.

Figure 18 is an exploded view of the exhalation filter cartridge of Figures 16a-16e according to one embodiment.

Figure 19 is an exploded view of the exhalation filter cartridge of Figures 16a-16e according to one embodiment.

Figures 20a-20d illustrate an exhalation filter cartridge with a retaining clip according to an embodiment of the present invention.

Figures 21a-21b show two views of a smoke and odor eliminating smoking pipe according to an embodiment of the present invention.

Figures 22a to 22d show different views of a smoke and odor eliminating smoking pipe according to an embodiment of the present invention.

Figure 23 is an exploded view of a smoke and odor eliminating smoking pipe according to an embodiment of the present invention.

Figures 24a to 24f show internal details of a smoke and odor eliminating smoking pipe according to an embodiment of the present invention.

Figures 25a-26c show internal details of an exhalation filter according to an embodiment of the invention.

Figures 26a to 26c present different views of a smoke and odor eliminating smoking pipe according to an embodiment of the present invention.

Figure 27 shows an exploded view of a smoke and odor eliminating smoking pipe according to an embodiment of the present invention.

Fig. 28 shows a sliding contact structure according to an embodiment of the present invention.

detailed description

The following description is provided to enable any person skilled in the art to make and use the invention. Various modifications to these embodiments are possible without departing from the spirit and scope of the invention, and the general principles defined herein may be applied to these and other embodiments and applications. Thus, the present invention is not intended to be limited to the embodiments and applications shown, but is to be accorded the widest scope consistent with the principles, features and teachings disclosed herein.

Figures 1a-1e illustrate a smoke and odor elimination tube 100 according to an embodiment of the present invention. FIG. 1 a is a perspective view of tube 100 . FIG. 1 b is a side view of tube 100 . FIG. 1 c is a top view of tube 100 . FIG. 1d is a bottom view of tube 100 . FIG. 1 e is a front view of tube 100 .

As shown in FIGS. 1a-1e , the tube 100 has six sides, a top side 151 , a bottom side 152 , a front side 153 , a rear side 154 , a left side 155 and a right side 156 . Tube 100 includes a mouthpiece 105 and one-way exhalation vents 115 on front side 153 , and a flip-top cap 110 with one-way inhalation vents 120 on top side 151 .

In use, the smoker opens the lid 110 to expose a combustion bowl (not shown) with a flammable substance therein. The smoker applies a flame over the flammable substance, for example using a butane lighter, and inhales through the mouthpiece 105 . The airflow causes the combustible substance to burn and the smoke to pass through an inhalation path in the tube 100 via an inhalation filter (not shown) and out of the mouthpiece 105 to the smoker. The smoker closes the lid 110, which effectively prevents air from flowing out of the opening exposed when the lid 110 is opened. Air can still be drawn through these one-way intake vents 120 . The smoker then exhales through the same mouthpiece 105 . Smoke travels through an exhalation path in tube 100 , through an exhalation filter (not shown) and out of the exhalation vents 115 . The exhalation filter purifies these smoke and odor particles.

In one embodiment, the tube 100 is approximately 4 inches long (front to back), 1.5 inches high (top to bottom) and 7/8 inches wide (left to right). Components of the tube 100 can be made from a metal such as aluminum or from plastic.

Figure 2 shows an exploded view of the tube 100 (shown in Figures Ia-Ie) according to one embodiment of the present invention.

The tube 100 comprises a body 201 with double channels, a lower channel 210 and an upper channel 211 . An end cap 208 with a through hole (not shown in FIG. 2 ) is positioned at the rear end of the lower channel 210 . A bowl housing 202 , possibly made of aluminum, is positioned near the rear side of the body 201 , behind the end cap 208 . Although not shown, bowl vents may be placed on the underside of the bowl 212 . The shape of the bowl housing 202 allows air to be drawn through the bowl vent holes on the underside of the bowl 212 to an intermediate cavity behind the end cap 208 and through the upper channel 211 . Although not shown, in some embodiments, a suction filter may be positioned in the upper channel 211 . The shape of the bowl housing 202 also allows air to pass from the upper channel to the intermediate cavity below the bowl 212 , through the end cap 208 and through the lower channel 210 .

A fitting 205 is positioned in the front end of the body 201 . The assembly 205 includes two passages, an upper passage 213 that interfaces with the upper channel 211 , and a lower passage 214 that interfaces with the lower channel 210 . In some embodiments, the fitting 205 is airtightly attached to the body 210, eg, using glue. The upper passage 213 may be configured to receive the mouthpiece 105 mounted therein, possibly with an O-ring 204 therebetween to create an airtight seal. The lower passage 214 may be configured to receive an exhalation filter cartridge 203 within the lower passage 210 and an exhalation ventilation cap 206 . In some embodiments, the exhalation ventilation cap 206 is removable to allow the exhalation filter cartridge 203 to be replaced. In some embodiments, the end cap 206 is part of or integral with the exhalation filter cartridge 203 .

The tube 100 includes an inhalation path and an exhalation path. As shown and described with reference to tube 100, the inhalation path of the tube 100 overlaps the exhalation path. To ensure that air is not drawn from the exhalation filter cartridge 203 during inhalation and that air is not forced through the combustion bowl 212 during exhalation, one or more one-way inhalation valves and one or more Multiple one-way exhalation valves. In some embodiments, the one-way intake valve can be attached to the flip top cover 110 . In some embodiments, the one-way intake valve can be a flap (similar to flap 303 in FIG. 3 ) positioned on the underside of the flip top lid 110 . Thus, during exhalation, the inhalation flap prevents air from leaving the flip-top lid 110 and forces air through the lower passage. In some embodiments, a one-way exhalation valve may be placed in or on the exhalation filter cartridge 203, in the body 201, on the end cap 208, or on the Exhale into the breather cap 206. In some embodiments, the one-way exhalation valve can be a flap (similar to flap 303 in FIG. 3 ) positioned on the front side of the end cap 208 . Thus, during inhalation, the flap prevents air from being drawn from the lower channel 210 and allows air to flow through the lower channel.

Figure 3 is an exploded view of a flip top cover assembly 300 according to some embodiments. The flip top cover assembly 300 includes: a flip top cover 110 with a plurality of suction ventilation holes 120 passing therethrough, a rear wall 312 extending downward from the rear side of the cover 110, passing through the rear wall 312 from left to right. A pivot hole 310 of wall 312, and a finger bar 311 which, when positioned on the body 201, extends beyond the rear side 154 to allow the flip top cover to rotate around the pivot hole 310 when pressed . A first bolt 308 is inserted into the pivot hole 310 and Lee torsion springs 307 are attached to the first bolt 308 . The first latch 308 may include a latch hole 315 therethrough.

As shown, a one-way suction flap 303 may be attached to the cover 110 to prevent airflow from exiting the suction vents 120 . A cover gasket 302 may be positioned on the underside of the cover 110 and held in place by a combustion bowl plate 305 . Screws 304 may be used to secure the combustion bowl plate 305 to the cover 110 . It should be understood that the combustion bowl plate 305 may be made of metal to prevent the gasket 302 and the one-way suction valve disc 303 from being damaged due to burning of combustible substances in the bowl 212 .

FIG. 4 is an exploded view of the flip top lid assembly 300 positioned for connection to the bowl housing 202 . As shown, a second peg 403 may be positioned through the holes 402 in the bowl housing 202 and through the peg hole 315 of the first peg 308 . It should also be understood that the Lee torsion springs 307 may be used to bias the flip top lid 110 closed and press the lid gasket 302 into an airtight position on the bowl housing 202 . Pressing the finger 311 generates a rotational force against the bias of the springs 307 , thereby opening the flip top cover assembly 300 to expose the bowl 212 .

Figures 5a to 5f show internal details of a tube 100 according to one embodiment of the invention.

Figure 5a shows a front view of the tube 100 and defines a plane A-A halfway between the left and right sides of the front.

Figure 5b shows a cross-sectional view of the tube 100 on plane A-A. When the flip-top lid 110 is opened or closed, suction will draw air from the mouthpiece 105, which will draw air from the upper channel 211, which will in turn draw air from an intermediate path 503, which will draw air from An intermediate chamber 505 below the concave bowl 212 is extracted. A one-way exhalation flap 507 prevents air from being drawn from the lower channel 210 and the exhalation filter cartridge 203 . Instead, air is drawn through bowl vent holes 520 on the underside of the bowl 212 , which draws smoke from combustible substances burning in the bowl 212 . In this embodiment, this may be referred to as the "suction path". During inhalation, air is forced into the mouthpiece 105 , which forces air into the upper chamber 211 , which forces air through the middle path 503 to the middle chamber 505 . A one-way suction flap 303 (see FIG. 3 ) in the flip top cover assembly 300 prevents air from being forced through the combustion bowl 202 . Instead, the one-way exhalation flap 507 in the lower passage 210 opens, allowing air to enter the lower passage 210 , pass through the exhalation filter cartridge 203 and exit the exhalation vents 115 . In some embodiments, the exhalation valve flap 507 (or some other one-way exhalation valve) may be positioned in this and/or other locations, such as in the exhalation filter cartridge 203 or near the exhalation vents 115 . In this embodiment, this may be referred to as the "outbound path".

FIG. 5 c shows a cross-sectional view of the tube 100 through the rear portion of the bowl 212 . As shown, the bowl housing 202 includes a plurality of bowl vents 520 located between the bowl 212 and the cavity 505 .

Figure 5d shows a side view of the tube 100 according to one embodiment of the invention. FIG. 5d defines plane B-B as a section through upper channel 211 , and plane C-C as a section through lower channel 210 .

FIG. 5e shows a cross-sectional view of the tube 100 in plane B-B. As shown, the bottom of the bowl 212 includes a plurality of bowl ventilation holes 520 .

Figure 5f shows a cross-sectional view of the tube 100 on plane C-C. As shown, in one embodiment, lower channel 210 may include a plurality of ridges that cooperate with a plurality of ridges on exhalation filter cartridge 203 .

Figure 6 is a cross-sectional view of an exemplary tube 500 according to an embodiment of the present invention. The tube 500 includes an upper channel 635 , a lower channel 655 and a middle channel 640 . An exhalation filter 650 is positioned within the lower channel 655 . A one-way exhalation valve 645 is positioned within the intermediate passage 640 . A one-way exhalation valve 630 is positioned in the upper channel 635 . A mouthpiece is positioned on the front side of the upper channel 635 of the tube 500 . A flip top cover 605 is positioned on the rear side of the upper channel 635 of the tube 500 . A combustion bowl 615 is positioned under the flip top cover 605 . An inhalation filter 620 is positioned between the bowl 615 and the mouthpiece 625 in the upper channel 635 . A plurality of exhalation vents 655 are positioned in the front side of the lower channel 655 of the tube 500 .

Thus, air is drawn from the mouthpiece 625 during inhalation. The one-way suction valve 630 allows air to pass through the upper passage 635 , from the combustion bowl 615 and through the suction filter 620 . The exhalation valve 645 prevents air from being drawn from the lower channel 655 . During exhalation, air is forced into the mouthpiece 625, which forces air through the middle channel 640 via the one-way exhalation valve 645 to the lower channel 655, through the exhalation filter 650 and out the exhalation vents 655 . The one-way intake valve 630 prevents air from being exhaled through the intake filter 620 or the combustion bowl 615 .

Figure 7 shows an exploded view of an exhalation tube 700 according to one embodiment.

As shown, the exhalation tube 700 includes: an oval body 705 with a filter passage 725 therethrough, threads (not shown) on the interior rear side of the oval body 705, and A passage (not shown) on the front side. A mouthpiece 710 is attached (possibly with glue) to the front side of the oval body. An exhalation filter cartridge 203 is inserted into the filter channel 725 . An end cap 715 includes exhalation vent holes 720 and threads 730 that cooperate with threads in the body 705 .

In use, smokers inhale smoke from a cigarette, pipe, bong, cigar or other smoking apparatus. The smoker then exhales through the mouthpiece 710 . Smoke travels through the mouthpiece 710 , through the passageway, into the channel 725 , through the exhalation filter cartridge 203 and out of the exhalation vents 720 . The filter 203 purifies the smoke and odor particles.

In some embodiments, the body 705 can be made from extruded aluminum, plastic, ferrous metal, precious metal, or the like. The mouthpiece 710 can be machined from stainless steel, plastic, ferrous metal, precious metal and the like. The end cap 715 can be machined from stainless steel, plastic, ferrous metal, precious metal and the like.

An exhalation tube 700 is shown in FIGS. 8a-8d.

FIG. 8 a shows a side view of the exhalation tube 700 . As shown, the tube 700 may be approximately 4 inches long, such as 3.93 inches. Figure 8a defines plane A-A.

Figure 8b shows a cross-sectional view of the exhalation tube 700 at plane A-A. As shown, the tube 700 includes a mouthpiece that is press fit onto the body 705 . The end cap 715 is screwed onto the body 705 by threads 730 .

FIG. 8c shows a front view of the exhalation tube 700 . As shown, in some embodiments, the tube 700 is approximately 1.3 inches across the longitudinal axis of the elliptical body 705 and approximately 0.95 inches across the transverse axis of the elliptical body 705 . The circular end cap 715 may be approximately 1.3 inches in diameter, allowing portions of the circular end cap to extend beyond the body 705 for easy rotational manipulation by the user.

FIG. 8d shows a rear view of the exhalation tube 700 . As shown, the end cap 715 includes a plurality of exhalation vents 720 .

Figures 9a-9e illustrate a tube 900 according to an embodiment of the invention. As will be described in more detail below, the tube 900 includes a combustion section, a cartridge section, and an internal igniter section.

In some embodiments, the tube 900 is about 4 inches high (top to bottom), 3 inches long (front to back) and 7/8 inch wide (left to right). As shown, the tube 900 includes a body 910 . A mouthpiece 905 is rotatably attached to the front side of the body 910 . A cap 915 is slidably mounted on top of the body 905 . Sliding the cap 915 forward exposes the combustion bowl (not shown) therein. Sliding the cap 915 back will allow the mouthpiece 905 to flip open. In some embodiments, sliding the cap forward after opening the mouthpiece secures the mouthpiece in its open position. An ignition switch 920 ignites the internal igniter, which ignites the flammable material in the combustion bowl. The smoker is able to inhale smoke through the mouthpiece 905 via an inhalation path and exhale smoke through the same mouthpiece via an exhalation path to filter the smoke and odor.

Figure 10a shows an exploded view of the tube 900 according to some embodiments of the invention. The tube 900 comprises a body 1001 having three channels, a front channel 1020 , a central channel 1022 and a rear channel 1024 . An exhalation filter cartridge 203 is positioned within the central channel 1022 . An igniter 1004 is positioned within the rear channel 1024 . A bottom cap 1012 with exhalation vents 1036 may be slidably mounted on the bottom of the body 1001 .

The front channel 1020 may be used to store flammable substances. This storage can be locked in place using spring loaded ball bearings that drop into a number of receiving indentations on the compartment. Some embodiments may use a swing-out storage hinged along the compartment and the vertical edge of the device. Other embodiments may use a bifold compartment hinged on the compartment and the bottom of the device.

A fitting 1005 can be inserted into the top side of the body 1001 over the three channels. The fitting 1005 may include a mouthpiece attachment portion 1026 on the front of the fitting 1005 . A mouthpiece 905 and mouthpiece seal 1008 may be attached to the mouthpiece attachment portion 1026 . In some embodiments, the mouthpiece seal 1008 includes five flat faces and one curved face. The arcuate surface can cooperate with an arcuate portion of the mouthpiece 905 to rotate the mouthpiece 905 from a position flush with the front of the body 1001 to a position perpendicular to the front of the body 1001 . A pin (not shown) can be slidably inserted through holes 1032 in the fitting 1002 and through a pivot hole 1030 in the mouthpiece 905 . When the mouthpiece 905 is inserted into the body 1001 , the pin can be held in place by the side walls of the body 1001 .

The fitting 1002 may also include notches 1034 that abut against the top portions of the walls that divide the body 1001 into its three channels. The notches 1034 can provide a better airtight seal between the fitting 1002 and the body 1001 . The assembly 1002 also includes a combustion bowl 1028 , possibly made of aluminum, with flame access holes (not shown) on the bottom side of the bowl 1028 . The fitting 1002 may be attached (possibly using glue) to the body 1001 to provide a hermetic seal.

A top end cap 915 may be slidably attached to the fitting 1002 or the body 1001 . A spring pin 1005, washer 1006 and set screw 1007 can cooperate with the end cap 915 to hold the cap 915 in the open or closed position. Some embodiments of the device may use a porcelain igniter compartment top dome insert and a combustion chamber insert to help contain the heat generated during combustion.

An external ignition switch 920 may be slidably mounted through the body 1001 to engage an internal ignition switch on the igniter 1004 . When activated, the igniter will ignite, producing a flame passing through the flame access holes under the combustion bowl 1028, thereby causing the flammable material to burn.

Like tube 100, tube 900 will include an inhalation path from the combustion bowl through an inhalation filter to the mouthpiece 905, and an inhalation path from the mouthpiece 905 through the exhalation filter cartridge 203 and out of the exhalation vents 1036. Exhale path.

Figure 10b is an exploded view of a tube 1050 according to one embodiment of the invention. Tube 1050 is similar to tube 900 described above with reference to Figures 9 and 10a. In this case, the tube 1050 comprises a body 1053 without channels therein. A storage chamber 1060, exhalation filter cartridge 203, and igniter assembly 1004 are placed in the body 1053 in close abutment against the inner side walls of the body 1053 and each other, thereby dividing the body into three sections similar to the tube 900 . A fitting 1055 similar to fitting 1002 is inserted over the three parts. Like fitting 1002, this fitting 1055 creates the channels that separate the inhalation and exhalation paths. The assembly 1055 supports the mouthpiece 905 using a plurality of pins 1062 and a mouthpiece seal 1008 . A bowl cover 1054 , spacer 1056 , spring 1056 and pin 1058 cooperate to form a flip top cover assembly on the bowl 1028 in the assembly 1054 . The igniter cap assembly 1068 is positioned at the bottom of the igniter assembly 1004 so that the possibly unidirectional airflow to the igniter assembly 1004 passes through an igniter vent 1070 in the bottom cover 1072 as needed. A top cover wear strip 1051 may be attached to the top cap 915 to allow the top cap 915 to slide across the top of the body 1053 or fitting 1053 comfortably and without loosening. An ignition switch assembly comprising ignition switch 920, ignition switch wear surface 1064, and slider 1066 enables a user to ignite the igniter, which causes flammable substances to burn.

Figure 11a is a side view of a tube 900 according to one embodiment. FIG. 11 a defines a plane A-A through the center of the rear channel 1024 and a plane B-B through the center of the central channel 1022 .

Figure lib is a cross-sectional view of the tube 900 at plane A-A. As shown, the igniter 1004 is positioned within the rear channel 1024 . Upon ignition, the igniter 1004 passes a flame 1138 through flame access holes 1180 in the combustion bowl 1028 .

Figure 11c is a cross-sectional view of the tube 900 at plane B-B. As shown, the exhalation filter cartridge 203 is inserted into the central channel 1022 above the exhalation vents 1036 . The exhalation filter cartridge 203 also cooperates with an intermediate channel 1140 from which the exhalation filter cartridge receives exhaled air from the smoker.

12a-12c illustrate a tube 900 according to some embodiments. Figure 12a is a front view of tube 900 and defines a plane C-C through the center of the front and a plane H-H at about 3/4 of the way from the left side of the front.

Figure 12b is a cross-sectional view of tube 900 at plane C-C. As shown, a storage chamber 1020 is positioned in the front channel 1022 , the exhalation filter cartridge 203 is positioned in the central channel 1022 , and the igniter 1004 is positioned in the rear channel 1024 below the combustion bowl 1028 . A one-way intake valve 1205 is positioned between the combustion bowls 1028 to enable the transfer of smoke from the combustion bowls 1208 to the mouthpiece 915 through the intermediate passage 1210 . A one-way exhalation valve 1215 may be positioned between the central passage 1210 and the central passage 1022 to enable exhaled smoke to divert from the mouthpiece 915 through the central passage 1210 to the central passage 1022 and exhalation filter cartridge 203 and out of the exhaled air. Vent 1036. Alternatively or additionally, a one-way exhalation valve 1215 may be positioned inside the exhalation filter cartridge 203 as described below.

Figure 12c is a cross-sectional view of tube 900 at plane H-H. Pin 1005 is positioned to lock end cap 915 as shown.

Figure 13 is a cross-sectional side view of a tube 1300 according to one embodiment of the invention. As shown, the tube 1300 includes a mouthpiece 1302 in a tube body 1301 . The mouthpiece 1302 is operatively connected to a suction filter 1304 which is operatively connected to a combustion bowl 1306 via a one-way suction valve 1308 . A flip top cover 1310 is positioned over the combustion bowl 1306 . The mouthpiece 1302 is also operatively connected to an exhalation filter channel 1318 with exhalation filter media therein. An outlet cap 1320 with an integrated one-way exhalation valve is positioned at the bottom end of the exhalation filter channel 1318 . An igniter 1316 is positioned in a channel beneath the combustion bowl 1306 . The igniter 1316 may receive air through an igniter air vent 1332 (possibly with a check valve). An ignition switch 1314 extends through the tube body 1301 to enable a user to activate the igniter 1316 . In one embodiment, during an inhalation phase, the ignition switch 1314 is pressed for one second before the person begins to inhale. During inhalation, smoke is drawn from the combustion bowl 1306 , through the one-way inhalation valve 1308 , through the inhalation filter 1304 and through the mouthpiece 1302 . During exhalation, smoke passes through the mouthpiece 1302 , through the exhalation filter channel 1318 (and exhalation filter media), and through the outlet cap 1320 . In some embodiments, the inhalation filter 1304 can be replaced by removing the mouthpiece 105 and pulling a cartridge removal handle 1330 that protrudes into the mouthpiece 105 .

Figure 14 is a cross-sectional side view of a tube 1400 according to one embodiment of the invention. As shown, the tube 1400 is similar to the tube 1300 except with a timed ignition button assembly 1405 and an igniter dust cover 1410 . The ignition button assembly 1405 ensures that the igniter is not left on for too long to ensure that the device does not generate enough heat to be a source of damage. The igniter dust cover 1410 ensures that dust does not interfere with igniting the flame.

Figure 15 shows details of a fire button assembly 1405 according to one embodiment of the invention. The ignition button assembly 1405 includes: an outer ignition button 1505 , a main oil-filled chamber 1520 , a transfer chamber 1510 and a return spring in the main chamber 1520 . When pressure is applied to the external ignition button 1505, oil from the main chamber 1520 enters the transfer chamber 1510 through the through holes 1530 in the piston 1515, slowly releasing the pressure on the ignition switch 1505. Once the oil travels into the transfer chamber 1510, the ignition switch 1505 is released and the oil is allowed to return to the main chamber 1520, whereby the process can be repeated.

Figures 16a-16e illustrate an exhalation filter cartridge 203 according to one embodiment. Figure 16a is a perspective view of the exhalation filter cartridge 203 comprising: a front face 1602, rear face 1604 and a central body 1606 (in this case with a square cross-section). The front face 1602 includes an opening 1608 for receiving exhaled smoke and scent from the smoker. In this case, the opening 1608 is surrounded by a raised lip 1610 around the circumference of the circular opening 1608 . The raised lip 1610 helps create an airtight seal in the exhalation paths of the tubes. FIG. 16b is a front view of the front face 1602 of the exhalation filter cartridge 203 . FIG. 16c is a rear view of the rear face 1604 of the exhalation filter cartridge 203 . Figure 16d is a side view of the exhalation filter cartridge 203 and defines a plane A-A and a plane Z-Z. Figure 16e is a cross-sectional view of the exhalation filter cartridge 203 on plane A-A. As shown, the exhalation filter cartridge 203 includes openings 1608 , filter media 1614 , an end cap 1612 , and filter exhalation vents 1616 in the end cap 1612 .

Figures 17a and 17b show details of an exhalation filter cartridge 203 according to one embodiment of the invention. FIG. 17 a is a cross-sectional side view of the exhalation filter cartridge 203 . As shown, the exhalation filter cartridge 203 includes an inlet cap 1620, an outlet cap 1628, and a filter housing 1622 between the inlet cap and the outlet cap. The inlet cap 1620 includes a raised lip (or "nub") that engages a corresponding shape on the inside of a tube such that generally all exhaled smoke passes through the filter media 1614 . A pleated HEPA filter 1624 is positioned inside the exhalation filter cartridge 203 , between the inlet cap 1620 , the outlet cap 1628 and the filter housing 1622 . HEPA materials rated at at least 95% rated will trap these smoke particles. A foam core 1630 is positioned between the inlet cap 1620 and the outlet cap 1628 and within the pleated HEPA filter 1624 . For example, the foam core 1630 may be fabricated from a core of 60 cells per inch polyether polyurethane foam (or other foam).

Figure 17b is a cross-sectional view of the exhalation filter cartridge 203 at plane ZZ. As shown, the exhalation filter cartridge 203 includes a foam core 1630 surrounded by a pleated HEPA filter 1624 surrounded by the filter housing 1622 . The foam core 1630 includes a central hole 1632 that preferably extends the length of the foam core 1630 . The central hole 1632 allows smoke to travel the length of the foam core 1630 before being forced laterally through the foam core 1630 and HEPA filter 1624 . Although not shown, a metal cap can be positioned at the bottom end of the foam core 1630 and HEPA filter 1624 to stop the downward flow of smoke and odor particles before they are allowed to exit the outlet cap 1628 and force the smoke And odor particles are directed toward the filter housing 1622 laterally. The foam core 1630 can be impregnated with an odor capture substance, such as odor absorbing material such as manufactured by OMI Industries Odor absorbing product. Additionally or alternatively, lemon, peppermint and/or cinnamon extracts (or various other extracts) can be added to the oil to provide a selected aroma.

In some embodiments, these odor absorbing materials react at the molecular level to neutralize smoke odors, preferably involving adsorption, absorption, gas solubility, and reactions. For example, when When oil is diluted with water and dispersed via atomization, the resulting tiny water droplets contain a thin oil sheath that creates an electrostatic charge. This charge facilitates the adsorption of these odor molecules onto the droplet surface. The gas is absorbed (soluble) and held by the droplets.

Figure 18 is an exploded view of an exhalation filter cartridge 203 according to one embodiment. As shown, the exhalation filter cartridge 203 includes a filter housing 1622 . The inlet cap 1620 is positioned on the top side of the filter housing 1622 to form the front face 1602 . HEPA filter 1624 is positioned inside filter housing 1622 An inner filter cap 1802 is positioned on the bottom side of the filter housing 1622 to support the HEPA filter 1624 and create an exhalation hole 1806 to allow exhaled air through the exhalation hole. Although not shown, the foam core 1630 is positioned inside the HEPA filter 1624 . may be made of rubber (e.g. A flap 1804 made of rubber) is positioned on the bottom side of the inner filter cap 1802 to cover the exhalation hole 1806. An outlet cap 1628 is positioned over the inner filter cap 1802 and the circular valve flap 1804 such that the circular valve flap is supported between the inner filter cap 1802 and the outlet cap 1628 . The outlet cap 1628 includes exhalation vents 1808 outside the boundaries of the valve flap 1804 . Thus, during exhalation, air is able to pass through the exhalation aperture 1806 , through the circular flap 1804 and out of the exhalation vents 1808 . During inhalation, the valve flap 1804 is pulled up to cover the exhalation hole 1806, thereby preventing air flow through the exhalation filter cartridge 203.

Figure 19 is an exploded view of an exhalation filter cartridge 203 according to one embodiment of the present invention. As shown, the exhalation filter cartridge 203 includes a filter housing 1622 . The inlet cap 1620 is positioned on top of the filter housing 1622 . A foam foam seal 1904 can be positioned over the inlet cap 1620 to achieve an airtight seal of the tube body. The inner filter cap 1802 is positioned at the bottom of the filter housing 1622 . The flap is positioned over the exhalation hole 1806 . Outlet cap 1628 is positioned above the inner filter cap 1802 and the outlet cap 1628 . Foam core 1620 is positioned inside a pleated HEPA filter 1624 that is positioned inside the filter housing 1622 . The top of HEPA filter 1624 and foam core 1630 may be fused or glued to inlet cap 1620 .

As stated above with reference to FIG. 18 b , the foam core 1630 includes a central hole 1632 extending the length of the foam core 1630 . The central hole 1632 allows the smoke to travel the entire length of the foam core 1630 before being forced through the foam core 1630 and HEPA filter 1624 . A metal cap 1902 is positioned over the foam core 1630 and the bottom end of the HEPA filter 1624 to force the smoke laterally towards the filter housing 1622 before the smoke is allowed to exit the outlet cap 1628 . In this embodiment, the metal cap 1902 is circular and the cross-section of the filter housing 1622 is square. Thus, the metal cap 1902 forces air through along the central hole 1632 , laterally through the foam core 1630 , laterally through the HEPA filter 1624 and out of the corners that extend beyond the circumference of the circular metal cap 1902 .

It should be understood that some embodiments may use natural or synthetic fibers, ceramics, metals, chemicals, oils and/or crystals for filtration.

Figures 20a-20d illustrate an exhalation filter cartridge 2005 with a retaining clip 2010 according to an embodiment of the present invention. FIG. 20 a is a perspective view of the exhalation filter cartridge 2005 . As shown, the exhalation filter cartridge 2005 includes a retaining clip 2010 attached to the end portion of the exhalation filter cartridge 2005 . The exhalation filter cartridge 2005 includes an end cap (similar to end cap 206 ) with exhalation vents (similar to exhalation vents 115 ) therein. FIG. 20 b is a close-up view of the retaining clip 2010 . As shown, the retaining clip 2010 may be a rocker clip having a front arm 2015 with a downwardly folded tip 2030, a rear arm 2020, and a gap between the two arms. A pivot base 2025. Depressing the rear arm 2020 will cause the pivot base 2025 to pivot and cause the front arm 2015 to rise. FIG. 20c is a perspective view of exhalation filter cartridge 2005 positioned in tube 100. FIG. FIG. 20d is a close-up view of the retaining clip 2010 when the exhalation filter cartridge 2005 is positioned in the tube 100 . In this embodiment, the tube 100 includes an aperture 2035 configured to receive and retain the downwardly folded tip 2030 of the forearm 2015 , and a slot 2040 to receive the rear arm 2020 . The tube 100 also includes a recessed portion 2045 to enable the user to apply downward pressure on the rear arm 2020 when the exhalation filter cartridge 2005 is positioned in the tube 100 . Other retention clip options are possible.

Some embodiments may use an alarm system that will alert the user and others that the breath has not returned through the tube. This alarm or reminder system will have an adjustable timer from 5 seconds to 30 seconds after which time the alarm or reminder will sound. Using this alarm or reminder system will assist the user in training to always exhale through the device. Over time, proper use of the device will become habit.

Exhalation filter cartridge 203 may be designed to be inserted into these series of devices.

Figures 21a-21b show two perspective views of a smoke and odor eliminating smoking pipe 2100 according to an embodiment of the present invention. As shown, the tube 2100 includes a body 2104 with a flip top cover 2110 . A mouthpiece 2105 may be operatively connected to the body 2104 and may have a sleeve 2102 sized to hold a cigarette 2106 . The cigarette 2106 can be inserted into the sleeve 2102 and into the body 2104 . A smoker opens flip-top lid 2110 to expose and light the tip of the cigarette 2106. A smoker can use the mouthpiece 2105 to inhale from the body 2104 and exhale into the body.

Figures 22a-22d illustrate a smoke and odor eliminating smoking pipe 2100 according to one embodiment. FIG. 22a shows a front view of tube 2100 . Figure 22b shows a top view of the tube 2100. FIG. 22c shows a side view of the tube 2100 . Figure 22d shows a bottom view of the tube 2100.

As shown, the tube 2100 has six sides, namely a top side 2251 , a bottom side 2252 , a front side 2253 , a rear side 2254 , a left side 2255 and a right side 2256 . The tube 2100 includes a mouthpiece 2105, one-way exhalation vents 2215 on the front side 2253, and a flip-top cap 2110 with one-way inhalation vents 2220 on the top side 2251. The mouthpiece 2105 is connected to an inhalation path (not shown in Figures 22a-22d) and an exhalation path (also not shown in Figures 22a-22d). Each of the inhalation path and the exhalation path are described below with respect to Figures 24a to 24f.

Tube 2100 includes a combustion chamber (also not shown in FIGS. 22a-22d ) capable of receiving a cigarette 2106 (not shown in FIGS. 22a-22d ). To operate the tube 2100 , a smoker opens the cap 2110 , lights the tip of the cigarette 2106 and inhales through the mouthpiece 2105 . When the cover 2110 is open or closed, the airflow burns the cigarette 2106 and causes the smoke to pass through an inhalation filter (not shown in Figures 22a to 22d) through the inhalation path in the tube 2100 and out of the mouthpiece 2105 to the smoker . After the cover 2110 is closed, air can still be drawn through the one-way intake vents 2220 . This cover 2110 is closed for exhalation. When the smoker exhales through the mouthpiece 2105, the smoke travels through the exhalation path in the tube 2100, including passing through an exhalation filter (not shown in FIGS. 22a-22d) and exiting the exhalation vents 2215. The exhalation filter cleans and substantially limits the emission of smoke and odor particles into the environment and substantially limits the effects of second and third hand smoke.

As shown, the cover 2110 may have a foam similar to the flip top cover assembly 300 described above with respect to FIGS. 3 and 4 . Additionally, the tube 2100 may be approximately 4 inches long (front to back), 1.5 inches high (top to bottom), and 7/8 inches wide (left to right). Components of the tube 2100 can be made of metal, such as aluminum or steel, and/or a thermally insulating material, such as various plastics.

Figure 23 shows an exploded perspective view of a smoke and odor eliminating smoking pipe 2100 according to one embodiment of the present invention. The tube 2100 includes, among other components: a body 2301 , a cavity housing 2302 , a fitting 2305 , a ram 2320 , and a ram insert 2328 .

The body 2301 has two channels, a lower channel 2310 and an upper channel 2311 . An end cap 2308 with a through hole (not shown in FIG. 23 ) is positioned on the rear end of the lower channel 2310 . The through hole may be configured to be fixedly connected to the tip of the exhalation filter.

The cavity housing 2302 , which may be made of a material such as aluminum, is positioned near the rear side of the body 2301 . The cavity housing 2302 is connected to the flip top cover 2110 by an inlet cover pin 2316 . The chamber housing 2302 forms an ignition chamber 2312 that exposes a tip of the cigarette 2106 when the lid 2110 is open. The chamber housing 2302 includes a chamber opening 2332 for receiving the tip of the cigarette 2106 and supporting it in the ignition chamber 2312 .

A fitting 2305 is positioned in the front end of the body 2301 . The assembly 2305 includes two passages, an upper passage 2313 that interfaces with the upper channel 2311 , and a lower passage 2314 that interfaces with the lower channel 2310 . In some embodiments, the assembly 2305 is attached to the body 2310 substantially airtight, eg, using glue. The upper passage 2313 is configured to receive the mouthpiece 2105 therein. The mouthpiece 2105 may be fitted with an O-ring (not shown in FIG. 22 ) to create an airtight seal between the mouthpiece 2105 and the fitting 2305 . A mouthpiece pin 2330 may also assist in attaching the mouthpiece 2105 to the fitting 2305. The lower passageway 2314 can be configured to receive an exhalation filter (not shown in FIG. 23 ) into the lower passageway 2310 . The lower passageway 2314 may also be configured to receive an exhalation vent cap 2306 .

In some embodiments, the exhalation ventilation cap 2306 is removable to allow replacement of the exhalation filter cartridges. In some embodiments, the exhalation ventilation cap 2306 is part of or integral with the exhalation filter cartridge.

The tube 2100 may include a shutter 2320 and a shutter insert 2328 in the upper channel 2311 of the body 2301 . A gate pivot clamp 2324, a fastener (such as a screw) 2326, and other connections (such as a gate pin 2318 and a gate spring 2320) secure the gate 2320 and the gate insert 2328 is connected to upper channel 2311 and ensures that the shutter 2320 and the shutter insert 2328 are biased to a closed position. The shutter insert 2328 may include an aperture 2334 that allows a cigarette to pass from the upper passageway 2313 through the shutter cavity 2336 to the cavity opening 2332 . When a cigarette 2106 is inserted, the shutter 2320 may be biased to an open position. As described in detail below, the shutter 2320 assists in restricting airflow to the cigarette 2106 when the cigarette 2106 reaches a predetermined length, such as the length of a conventional cigarette filter.

Figures 24a-24f show internal details of a smoke and odor eliminating smoking pipe 2100 according to one embodiment of the invention.

Figure 24a shows a front view of the tube 2100 and defines a plane B-B halfway between the left and right sides of the front. FIG. 24a further illustrates these one-way exhalation vents 2215 on the front of the mouthpiece 2105 and tube 2100 .

Figure 24b shows a cross-sectional view of the tube 2100 at plane B-B. As shown in Figure 24b, the tube 2100 includes an inhalation path configured to allow airflow from the ignition chamber 2402 to pass through the combustion chamber 2408 and the cigarette 2106 during inhalation. When the flip-top lid 2110 is closed, the intake of the mouthpiece 2105 continues to allow airflow through the intake vents 2220 . In this embodiment, the path from the inhalation vents 2220 through the cigarette 2106 to the mouthpiece 2105 may be referred to as an "inhalation path."

The tube 2100 includes an exhalation path configured to allow airflow through the exhalation filter 2412 during exhalation. For example, smoke exhaled into mouthpiece 2105 travels through a passage 2406 to exhalation filter 2412 , and eventually exits tube 2100 through exhalation vent cap 2306 . A one-way exhalation valve (example shown in FIG. 3 ) in the flip top lid assembly 2110 prevents air flow through the cigarette 2106 during exhalation. A one-way exhalation valve allows airflow to enter lower channel 2310 , pass through exhalation filter 2412 and exit exhalation vent cap 2306 . The one-way exhalation valve prevents air flow through the filter during inhalation. In some embodiments, the exhalation valve can be part of the filter 2412 in the exhalation ventilation cap 2306 and/or in other locations. In this embodiment, the path from mouthpiece 2105 through the passageway 2406 and exhalation filter 2412 to exhalation vent cap 2306 may be referred to as an "exhalation path."

Figure 24c shows an expanded view of the ram cavity 2336 in Figure 24b. As shown, a ram 2320 separates the ram chamber 2336 from the combustion chamber 2408 . The shutter 2320 may be positioned to substantially restrict airflow through the inhalation path when the cigarette is burned to a predetermined length. As stated above, when a cigarette 2106 is inserted into the combustion chamber 2408, the shutter 2320 is biased to an open position. However, when the cigarette 2106 burns and becomes shorter than the distance separating the shutter 2320 from the mouthpiece 2105, an internal spring (not shown) returns the shutter 2320 to a closed position. In this closed position, the shutter 2320 restricts the suction path of the airflow through the tube 2100 . In one embodiment, the shutter 2320 can be positioned to correspond with the filter length of the cigarette 2106 .

Figure 24d shows a side view of a tube 2100 according to one embodiment of the invention. FIG. 24d defines plane F-F as a section through the upper channel 2311 , and plane C-C as a section through the lower channel 2310 .

FIG. 24e shows a cross-sectional view through the tube 2100 on plane F-F. As shown, plane F-F may cut through ignition chamber 2402 , combustion chamber 2408 , ram 2320 , ram chamber 2336 , upper passage 2313 , and mouthpiece 2105 .

FIG. 24f shows a cross-sectional view through the tube 2100 on plane C-C. As shown, plane C-C may cut through an ember chamber 2404 , lower channel 2310 , exhalation filter 2412 , and exhalation vent cap 2306 .

Figures 25a-26c show internal details of an exhalation filter 2412 according to an embodiment of the invention.

Figure 25a shows an exploded view of an exhalation filter 2412 according to an embodiment of the present invention. The exhalation filter 2412 includes: an O-ring 2502, an inlet cap 2504, a pleated barrel 2516, a filter body 2518, a foam filter 2506, a filter body cap 2508, an inner O-ring 2510, A valve piston 2512, a piston spring 2514, and an end cap 2520.

The filter body 2518 houses the pleated cartridge 2516 and the foam filter 2506 between the inlet cap 2504 and the filter body cap 2508 . In one embodiment, the pleated cartridge 2516 includes a HEPA filter. In one embodiment, the pleated cartridge 2516 is similar to the pleated HEPA filter 1624 depicted above in Figures 17a and 17b. A foam core is positioned within the corrugated barrel 2516. The foam core may be fabricated from a core of polyether polyurethane foam (or other foam) of 60 cells per inch (PPI) (the PPI may be higher or lower). The foam core may be impregnated with an odor capturing substance, such as odor absorbing material such as manufactured by OMI Industries Odor absorbing product. Additionally or alternatively, lemon, peppermint and/or cinnamon extracts (or other extracts) can be added to the oil to provide a selected aroma.

The filter body end cap 2508 is configured to enclose the foam filter 2506 and pleated cartridge 2516 within the filter body 2518 . Valve spring 2514 biases the valve piston 2512 and O-ring 2508 against the filter body cap 2508 , creating a one-way exhalation valve within the filter 2412 .

Figure 25b shows a side view of the exhalation filter 2412. In one embodiment, filter body 2518 has a length of 2.480 inches. Figure 25b further defines a plane A-A passing through the center of the filter 2500.

FIG. 25c shows a cross-sectional view through plane A-A of exhalation filter 2412 . As shown, plane A-A traverses inlet cap 2504 , filter body 2518 , pleated cartridge 2516 , foam filter 2506 , and end cap assembly 2524 . The end cap assembly 2524 is shown to include an end cap 2520, a valve piston 2512, and a piston spring 2514 in compression.

It should be understood that various embodiments of the filter 2412 may use natural or synthetic fibers, ceramics, metals, chemicals, oils, and/or crystals for filtering.

Figures 26a-26c illustrate a smoke and odor eliminating smoking pipe 2600 according to an embodiment of the present invention. Figure 26a shows an external side view of the tube 2600.

Figure 26b shows a side view of the tube 2600 and defines plane A-A halfway between the left and right sides of the front. The tube 2600 includes an exhaust port 2628 that directs exhaled smoke out of the tube 2600 .

Figure 26c shows a cross-sectional view of the tube 2600 at plane A-A. The tube 2600 includes an inlet valve assembly (including a one-way intake valve) and an ash outlet door 2602 (for evacuating cigarette ash). The tube 2600 further includes a cap 2636 for receiving a cigarette 2106. The tube 2600 includes an exhalation filter 2624 (which may be the same as or similar to the exhalation filter 2412 ) and a power block 2610 . The power block 2610 is used to heat an electric heating element. The tube 2600 also includes a shutter 2620 for preventing smoke from the cigarette filter. Further details of the tube 2600 are provided with reference to FIG. 27 .

Figure 27 illustrates a smoke and odor eliminating smoking pipe 2600 according to one embodiment of the present invention. The tube 2600 includes: an end block 2708 , a body 2716 , a head 2738 and a slidable cap 2736 . The end block 2708 fits into the body 2716 . A power block 2710 rests within the body 2716 on the end block 2708 for energizing a resistive heating element (not shown) to ignite the cigarette 2106 . Electrical terminals 2724 are connected to a contact block 2718 which in turn is connected to the power block 2710 . The electrical posts 2724 extend alongside the cigarette 2106 when inserted. The power block 2710 includes a battery or other power source that supplies electrical energy to the resistive heating element. A ignition button 2722 interfaces with circuitry (not shown) in the power block 2710 to energize the resistive heating element and light the cigarette 2106 .

The end block 2708 includes a socket 2748 . An ash door and one-way exhalation valve assembly 2702 are positioned within the receptacle 2748 to trap cigarette ash and restrict airflow during exhalation.

A shutter 2720 is connected to these electrical terminals 2724 . A spring 2714 biases the shutter 2720 in a closed position. The end block 2708, shutter 2720 and body 2716 form an ignition and combustion chamber. When the cigarette 2106 reaches a predetermined length, the shutter 2720 and spring 2714 restrict airflow through the inhalation path.

An O-ring 2742 seals a cigarette cylinder 2740 of the head 2738 to the body 2716. A cylinder cap 2744 opens to receive a cigarette 2106. A rod 2734 facilitates the loosening and tightening of the cylindrical cap 2744. Thus, when a cigarette 2106 is inserted into the cigarette cylinder 2740, the cigarette 2106 deflects the shutter 2720 and the cigarette is received into the ignition and combustion chamber.

The tube 2600 includes an inhalation path configured to allow airflow from the one-way valve assembly 2702 to pass through the ignition and combustion chamber and cigarette 2106 to mouthpiece 2728 during inhalation. The mouthpiece can be connected to the head 2738 and filter 2742 via a mouthpiece adapter 2730 .

The tube 2600 includes an exhalation path configured to allow airflow through the exhalation filter 2726 during exhalation. Exhaled smoke entering the mouthpiece 2734 is directed through the filter 2742 out of the exhaust port 2628 . The exhalation filter 2742 may include a one-way exhalation valve that allows airflow during exhalation.

Figure 28 illustrates a slidable heating element system 2800 according to one embodiment of the invention. As shown, the slidable heating element system 2800 includes electrical terminals 2824 with a contact block 2818 connected to a power source 2810 . The slidable heating element system 2800 further includes a resistive heating element 2802 that is biased to contact the tip of the cigarette 2106 using a spring 2814 . The resistive heating element 2802 is connected to the electrical terminals 2824 via slidable cylinders 2804 and 2806 , which provide an electrical connection to the contact block 2818 . The slidable heating element system 2800 further includes a stop structure 2820 that prevents the resistive heating element 2802 from chasing the tip of the cigarette after the cigarette 2106 reaches a predetermined length. The resistive heating element 2802 is slidable between the end of the post 2824 and the stop structure 2820 .

When the ignition button 2722 on the tube 2700 is pressed, the power supply 2810 electrically activates the contact block 2818 and heats the resistive heating element 2802 and ignites the cigarette 2106 . The resistive heating element 2802 chases the tip of the cigarette 2106 as the cigarette 2106 burns. When stop block 2820 is reached, the resistive heating element 2802 is no longer in contact with the tip of the cigarette 2106, allowing the cigarette 2106 to naturally extinguish. The stop 2820 may be positioned to allow for a predetermined length, such as the length of a cigarette filter.

Although several of these embodiments have been described as using the same mouthpiece for inhalation and exhalation, those skilled in the art will appreciate that separate mouthpieces may be used. Several embodiments have been described using a single cigarette. However, those skilled in the art will appreciate that the tube could be used to receive other smoking devices, such as cigars, slim rolls, roll-your-own cigarettes, nipples or the like. Those skilled in the art will appreciate that in some embodiments, the inhalation and exhalation paths may not overlap. Herein the term "pipe" shall include all types of smoking devices including bongs, hookahs, electronic cigarettes or the like. It should be understood that the term "smoke" may or may not include odor, and may or may not include visible smoke.

Embodiments of the present invention preserve the mundane and enjoyable experience of smoking and reduce or eliminate the adverse effects of second and third hand smoke. For example, various embodiments of the present invention reduce or eliminate odors and particulate matter entering hair, clothing, and other surfaces associated with third-hand smoke. Additionally, embodiments of the present invention reduce or eliminate the amount of nicotine, THC, tar, smoke, particulate matter, and/or other chemical agents that adversely affect the health of non-smokers in the smoker's vicinity. Thus, the health of non-smoking friends and family members is beneficially enhanced. Accordingly, embodiments of the present invention allow smokers to enjoy the recreational, ritual, spiritual, medical, and other purposes of smoking without the environmental and health effects of second-hand and third-hand smoke.

The above description of these preferred embodiments of the present invention is by way of example only, and many other variations and modifications of the above-described embodiments and methods are possible in light of the above teaching. The embodiments described herein are not intended to be exhaustive or limiting. The invention is limited only by the following claims.

Claims (18)

1. A closed smoking device, comprising: a combustion chamber capable of receiving at least one tip of a cigarette; an inhalation path for allowing airflow from the combustion chamber to pass through the cigarette during inhalation; an exhalation filter; and an exhalation path for forcing airflow through the exhalation filter during exhalation, wherein the inhalation path includes a one-way inhalation valve for allowing airflow through the cigarette during inhalation and restricting airflow through the cigarette during exhalation, and Wherein the exhalation path includes a one-way exhalation valve for allowing air flow through the exhalation filter during exhalation and restricting air flow through the exhalation filter during inhalation. 2. The enclosed smoking device of claim 1, further comprising a mouthpiece connected to the inhalation path and the exhalation path. 3. The enclosed smoking device of claim 1, further comprising a cover positioned above the combustion chamber, the cover when open allows a flame to reach the tip of the cigarette and when closed creates a flame with the combustion chamber. A substantially airtight suction seal. 4. The enclosed smoking device of claim 1, further comprising a shutter configured to restrict airflow through the cigarette after the cigarette has reached a predetermined length during inhalation. 5. The enclosed smoking device of claim 1, further comprising a cigarette lighter in contact with the tip of the cigarette. 6. The enclosed smoking device of claim 5, wherein the cigarette lighter is biased to contact the tip of the cigarette as the cigarette is drawn. 7. The enclosed smoking device of claim 6, further comprising a contact block configured to restrict the cigarette lighter from continuing to contact the tip of the cigarette after the cigarette has reached a predetermined length. 8. The enclosed smoking device of claim 1, wherein the exhalation filter comprises: a housing, a high efficiency particulate air (HEPA) filter, and a foam core. 9. The enclosed smoking device of claim 8, wherein the foam core includes a central hole extending the length of the foam core, and the foam core includes odor absorbing chemicals for removing odors from exhaled smoke. agent. 10. A method of smoking comprising: burning at least one tip of a cigarette in a combustion chamber having a plurality of ventilation holes; During inhalation, the one-way inhalation valve is opened by inhalation, allowing airflow from the combustion chamber to pass through the cigarette, while the one-way exhalation valve is closed, thereby restricting airflow from an exhalation filter to be inhaled; opening said one-way exhalation valve by exhaling, thereby forcing exhaled smoke from the smoker to reach said exhalation filter, while closing said one-way inhalation valve, thereby restricting exhaled smoke from the smoker to reach the cigarette; and The exhaled smoke is filtered by the exhalation filter. 11. The smoking method of claim 10, wherein allowing the airflow from the combustion chamber further comprises restricting air from passing through the exhalation filter during inhalation. 12. The smoking method of claim 10, further comprising lighting the tip of the cigarette before burning at least the tip of the cigarette. 13. The smoking method of claim 10, further comprising restricting airflow through the cigarette during inhalation after the cigarette has reached a predetermined length. 14. The smoking method of claim 10, further comprising contacting the tip of the cigarette with a cigarette lighter. 15. The smoking method of claim 14, further comprising biasing the cigarette lighter to contact the tip of the cigarette as the cigarette is drawn. 16. The smoking method of claim 15, further comprising restraining the cigarette lighter from continuing to contact the tip of the cigarette after the cigarette has reached a predetermined length. 17. The smoking method of claim 10, wherein the exhalation filter comprises: a housing, a high efficiency particulate air (HEPA) filter, and a foam core. 18. An enclosed smoking device comprising: a combustion chamber with ventilation holes, the combustion chamber including means for receiving at least one tip of a cigarette; a one-way inhalation valve for allowing airflow from the combustion chamber through the cigarette during inhalation and restricting airflow through the cigarette during exhalation; a one-way exhalation valve for forcing airflow through an exhalation filter during exhalation and restricting air passage through the exhalation filter during inhalation; and Means for restricting airflow through the cigarette after the cigarette has reached a predetermined length during inhalation.