US3788798A - Chemical ignition system for a cigarette lighter using an ignition aid - Google Patents
Chemical ignition system for a cigarette lighter using an ignition aid Download PDFInfo
- Publication number
- US3788798A US3788798A US00248264A US3788798DA US3788798A US 3788798 A US3788798 A US 3788798A US 00248264 A US00248264 A US 00248264A US 3788798D A US3788798D A US 3788798DA US 3788798 A US3788798 A US 3788798A
- Authority
- US
- United States
- Prior art keywords
- ignition
- cartridge
- port
- cartridges
- spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06C—DETONATING OR PRIMING DEVICES; FUSES; CHEMICAL LIGHTERS; PYROPHORIC COMPOSITIONS
- C06C9/00—Chemical contact igniters; Chemical lighters
Definitions
- Aluminum borohydride Al(BH.,) is a strong reducing agent and is extremely reactive with many materials. It inflames spontaneously in air over a very wide range of conditions, and it reacts with water with explosive violence. The spontaneous ignition of Al(BH in air is a property which can be advantageously used to ignite a fuel such as liquefied petroleum gas (butane, propane, etc.)
- Another effect of low temperature is to decrease the absolute concentration of water vapor in the air, even though the relative humidity may be high. It has been found that aluminum borohydride will not ignite spontaneously in absolutely dry air. This is believed to be due to the fact that in order for it to ignite in air, it must first undergo a rapid reaction with another specie, such as the hydroxyl group present in water. Whether this reaction introduces reactive species, such as free radicals, that accelerate the subsequent reaction with air, or whether the reaction merely serves to heatup the Al(BH to a higher temperature and, therefore increases its reaction rate with oxygen in the air, is not known at this time.
- reactive species such as free radicals
- a method of-achieving spontaneous ignition at low temperatures and low humidity is to eject aluminum borohydride from its container in the form of liquid droplets rather than vapor. This can be achieved by filling a cartridge with liquid aluminum borohydride and omitting the absorbent, such as Kaowool, that is normally used in vapor cartridges.
- Such designs suffer from four significant disadvantages. Masses of glowing material are discharged which constitute a significant hazard to persons and property as they are extremely hot and can cause ignition of such materials as cloth and paper.
- valve frequently leaks due to entrapment of solid material which interferes with the closing mechanism. Finally, a very unpleasant odor is created whenever the unit is actuated because of the relatively high concentration of aluminum borohydride. ln vapor form, the material is at a lower concentration and the odor is hardly noticeable.
- an ignition system which includes a sealed reservoir of aluminum borohydride, a sealed reservoir of an ignition aid selected from the group consisting of methanol and acetaldehyde and means for releasing a portion of each of the aluminum borohydride and ignition aid into an ignition space to form a reactive mixture and ignite a gaseous fuel contained therein.
- the ignition aid and aluminum borohydride are in sealed cartridges having inertially operated ports therein for release of small quantities of their contents into a confined ignition. space.
- a coaxial, inertial ignition system for a lighter is shown and a side-by-side, dual-stream ignition system within a lighter housing is also shown.
- the 8H radical has frequently been proposed as the active intermediate in the oxidation of boron hydrides.
- methanol and acetaldehyde may have as ignition aids, compared to water, is that they can generate more energy per molecule than water in the overall reaction that occurs.
- reaction Al(BI-I with water or, for example, methanol leads to imcompletely oxidized products, including hydrogen (see above).
- reaction in the cigarette lighter involves both a reaction with ignition aid and a subsequent combustion with oxygen in the air, the overall reactions of importance in determining the release of energy are:
- acetaldehyde is a useful ignition aid for aluminum borohydride. It is believed that acetaldehyde reacts with aluminum borohydride because it contains a hydroxyl group. It is known that acetaldehyde can exist in two tautomeric forms in dynamic equilibrium, i.e.,
- FIG. 1 is a partial cross section of a coaxial inertial ignition system for a lighter
- FIG. 2 is a cigarette lighter, in rest position, having a dual stream ignition unit
- FIG. 3 is the lighter of FIG.2 in a partially actuated (compressed) position
- FIG. 4 is the lighter of FIG. 2 in the sudden release position
- FIG. 5 is the lighter of FIG. 2 in the finger-piecereturn position
- FIG. 6 is a top view, partially in section, of the lighter of FIG. 2 showing the side-by-side cartridges;
- FIG. 7 is a detailed section view of the lighter of FIG. 2 showing the arrangement of the cartridges with respect to the baffle plate. 1
- FIG. 1 there is shown an ignition system comprising two compartments, 11 and 12, for aluminum borohydride and ignition aid. Both compartments are located within the outer cartridge 13, which is preferably cylindrical in shape.
- a tapered port 14 is bored into the front wall of the outer cartridge 13.
- An inner cartridge 15 is reciprocally positioned and coaxially spaced within the outer cartridge 13 such that a clearance space 16 of approximately two-thousandths (0.002) of an inch is maintained. This inner cartridge is closed at its rear by an end cap 17.
- a tapered port 14 is bored into the front wall of the outer cartridge 13.
- An inner cartridge 15 is reciprocally positioned and coaxially spaced within the outer cartridge 13 such that a clearance space 16 of approximately two-thousandths (0.002) of an inch is maintained.
- This inner cartridge is closed at its rear by an end cap 17.
- seal retainer 18 which can be integral with end cap 17, if desired, retains thereon a seal 19, in the form of an O-ring. Seal 19 precludes any fluid from leaking into or out of inner cartridge 15. The metal wall is rolled into the gasket.
- a coil spring 20 has one end bearing against seal retainer 18 and the opposite end bearing on a plunger 21.
- the plunger has an enlarged forward portion and a smaller diameter rearward portion thereby forming a shoulder 22 on which the end of spring 20 bears.
- the plunger is hollow and contains an absorbent material 23 therein which may be Kaowool.
- the absorbent material is saturated with liquid aluminum borohydride.
- a front cap 24 closes the. forward portion of the plunger 21.
- the front cap has a socket 26 therein, into which is press-fit a tapered seal tip 27.
- the tapered tip 27 mates with tapered orifice, 13a, in inner cartridge 15 to seal orifice 13a.
- a thin gasket, 34 prevents flow through channel 16 and out through the orifice 14 of outer cartridge 13.
- outer cartridge 13 The rear compartment of outer cartridge 13 is closed .by an end cap 28 and an O-ring 29 in the same manner as described with respect to inner cartridge 15.
- a longitudinal rod 30 is secured to seal retainer 31.
- An absorbent cylinder 32 which can be packed with Kaowool, for example, is saturated with an ignition aid (methanol or acetaldehyde).
- a coil spring 33 has one end secured to seal retainer 31; the opposite end thereof bears against the end cap 17 of inner cartridge 15.
- FIGS. 27 a lighter having a pair of cartridges disposed in side-by-side relationship rather than in coaxial alignment as in FIG. 1.
- This igniter design is referred to hereafter as the dual stream ignition unit.
- the lighter includes a housing 35 which an be made of metal or other suitable material.
- a fingerpiece 36 is pivotally mounted on the housing about pin 37 and is freely movable on said housing.
- a return spring 38 which can be a coiled spring is secured at one end, within cavity 39.
- a plunger 40 is secured to the other end of spring 38 and lies in the path of movement of fingerpiece 36.
- a striker plate 41 is pivotally secured about a pin 42 within a recess 43 on the fingerpiece.
- a stop 44 is secured to the fingerpiece 36 across the recess 43. The stop limits the clockwise rotation of the striker plate 41 about pin 42 caused by the bias of spring 43'.
- Spring 43' is held by a protuberance 45 on striker plate 41.
- the top Surface 46 of striker plate 41
- a pair of cartridges 47 and 48 are movable positioned in side-by-side relationship within a pair of longitudinal openings 49 and 50 in housing 35.
- Coiled springs 51 and 52 surround each cartridge; one end of each spring bears on the housing and the other end bears on the respective end cap flanges 53 and 54 on cartridges 47 and 48.
- Springs 51 and 52 urge the cartridges rearwardly against an impact pin 55 which is secured to housing 35 and extends transversely of the longitudinal openings 49 and 50.
- striker plate 41 By pushing fingerpiece 36 inwardly against the bias of spring 38, striker plate 41 will bear against cartridges 47 and 48 and drive them forwardly.
- the cartridges pivot the striker plate in a clockwise direction about pin 42 until lower leg 56 of striker plate 41 is prevented from moving further by stop member 44.
- stop member 44 As the cartridges are moved inwardly by plate 41, a point is reached where springs 51 and 52 are compressed and end cap flanges 53 and 54 slip past the pointed end of the plate. The cartridges are then forced outwardly and abut violently against impact pin 55.
- Cartridges 47 and 48 are designed according to the principles set forth in US Pat. No. 3,535,065 and they contain aluminum borohydride and ignition aid respectively. They simultaneously discharge a minute amount of their contents toward a mixing baffle 57.
- Baffle 57 is a V-shaped plate (see FIG. 7), the bend in which is slightly offset from the center line between the two cartridges in order to Create a turbulent flow. The offset is desirably between 0.070 and 0.085 inches.
- a fuel reservoir 60 is secured to housing 35 or made integral therewith. It is sealed and is designed to receive a liquefied petroleum gas, such as butane, which is a liquid under pressure but vaporizes readily under atmospheric pressure.
- An inlet valve 61 such as that shown in US. Pat. No. 3,085,601 is mounted on the reservoir to permit the latter to be refueled. Gas is supplied to the ignition zone by means of a conduit 63 which leads from the fuel reservoir 60 to a burner valve 62, such as that shown in US. Pat. No. 2,620,643.
- Burner valve 62 can also be of the forklift variety such as that depicted in US. Pat. No. 2,571,435, where the valve is opened by fingerpiece 36.
- a cartridge containing no ignition aid does not ignite at temperatures below 40F, or below 50F, when the relative humidity is less than 65 percent.
- An ignition system for igniting a gas to produce a flame comprising a first sealed reservoir of aluminum borohydride, first means associated with said first sealed reservoir for releasing a controlled quantity of the aluminum borohydride, a second sealed reservoir of an ignition aid selected from the group consisting of methanol and acetaldehyde, second means associated with said second.
- a sealed reservoir for releasing a controlled quantity of the ignition aid a third sealed reservoir for a flammable material capable of discharge in the gaseous state, third means associated with said third sealed reservoir for releasing a controlled quantity of the flammable material in the gaseous state, means forming an ignition space arranged in direct communication with said first and second reservoirs for mixing the released aluminum borohydride and ignition aid to form a reactive mixture and effect spontaneous combustion, and said third means arranged to direct the gaseous state flammable material so that it is ignited by the spontaneous combustion of the reactive mixture.
- said first mean includes an inertially operated port associated with said first reservoir
- said second means includes an inertially operated port associated with said second reservoir, said inertially operated ports arranged for releasing the controlled quantities of aluminum borohydride and ignition aid to the ignition space.
- a lighter including a coaxial, inertial ignition system comprising the elements of:
- a cylindrical outer cartridge having a port therein in its forward wall
- a rear compartment defined by the rear end of said inner cartridge and the rear part of said outer cartridge containing an ignition aid selected from the group consisting of methanol and acetaldehyde;
- stop means are provided in said rear chamber to'arrest the rearward travel of said inner cartridge.
- said plunger is axially positioned within said inner cartridge and includes an annular shoulder against which said biasing spring abuts, said spring being positioned at its other end against the rear wall of said inner cartridge.
- a lighter comprising the elements of:
- a first cartridge on said-housing containing aluminum borohydride and having a port therein directed toward a flame ignition zone, said port being sealed by inertially movable means;
- a second cartridge on said housing containing an ignition aid selected from the group consisting of methanol and acetaldehyde and having a port therein directed toward a flame ignition zone, said port being sealed by inertially movable means;
- a fuel system on said housing including a reservoir for liquefied petroleum gas and a valved conduit extending from said reservoir to a flame ignition zone;
- a spring-loaded, ignition actuator pivotally mounted upon said housing including means to strike each of said first and second cartridges and thereby simultaneously release a portion of the contents thereof to said flame ignition zone.
- said lighter recited in claim 12 wherein said cartridges are spring loaded within said housing and said ignition actuator comprises a spring-loaded, pivotally mounted finge'rpiece having a spring loaded, pivotally mounted striker plate adapted to move said cartridges against their restraining springs and upon further pivoting to suddenly release said cartridge against a stop member, whereby portions of said contents of said cartridges are released.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Lighters Containing Fuel (AREA)
- Air Bags (AREA)
Abstract
Description
Claims (14)
- 2. The ignition system of claim 1 wherein said ignition aid is methanol.
- 3. The ignition system of claim 1 wherein said ignition aid is acetaldehyde.
- 4. The ignition system of claim 1 wherein the aluminum borohydride in said ignition space is in the vapor phase.
- 5. An ignition system, as set forth in claim 1, wherein said first mean includes an inertially operated port associated with said first reservoir, said second means includes an inertially operated port associated with said second reservoir, said inertially operated ports arranged for releasing the controlled quantities of aluminum borohydride and ignition aid to the ignition space.
- 6. A lighter including a coaxial, inertial ignition system comprising the elements of: a. a cylindrical outer cartridge having a port therein in its forward wall; b. an inner cylindrical cartridge containing aluminum borohydride, within the forward part of said outer cartridge and spring biased against the inner surface of the said forward wall of said outer cartridge, said inner cartridge having a port in its forward wall adjacent to the port in the forward wall of said outer cartridge and haVing a spring biased plunger with a sealing surface to close off said port; c. a rear compartment defined by the rear end of said inner cartridge and the rear part of said outer cartridge containing an ignition aid selected from the group consisting of methanol and acetaldehyde; and d. a stream of flammable gas to be ignited by said ignition system.
- 7. The ignition system of claim 6 wherein the spring biasing said inner cartridge against the inner surface of the forward wall of said outer cartridge is positioned within said rear compartment and is adapted to compress, under inertial forces, before the spring biasing the plunger of said inner compartment against the port in the forward wall thereof.
- 8. The ignition system of claim 7 wherein stop means are provided in said rear chamber to arrest the rearward travel of said inner cartridge.
- 9. The ignition system of claim 6 wherein said inner cartridge and said rear compartment contain an absorbent medium for said aluminum borohydride and said ignition aid respectively.
- 10. The apparatus of claim 6 wherein said plunger is axially positioned within said inner cartridge and includes an annular shoulder against which said biasing spring abuts, said spring being positioned at its other end against the rear wall of said inner cartridge.
- 11. A lighter comprising the elements of: a. a housing; b. a first cartridge on said housing containing aluminum borohydride and having a port therein directed toward a flame ignition zone, said port being sealed by inertially movable means; c. a second cartridge on said housing containing an ignition aid selected from the group consisting of methanol and acetaldehyde and having a port therein directed toward a flame ignition zone, said port being sealed by inertially movable means; d. a fuel system on said housing including a reservoir for liquefied petroleum gas and a valved conduit extending from said reservoir to a flame ignition zone; and e. a spring-loaded, ignition actuator pivotally mounted upon said housing including means to strike each of said first and second cartridges and thereby simultaneously release a portion of the contents thereof to said flame ignition zone.
- 12. The lighter recited in claim 11 wherein said cartridges are arranged side by side with one another.
- 13. The lighter recited in claim 12 wherein a V-shaped, mixing baffle plate is positioned concavely facing the ports in said cartridges, the line forming the V being laterally offset from the center line between the spaced cartirdges.
- 14. The lighter recited in claim 12 wherein said cartridges are spring loaded within said housing and said ignition actuator comprises a spring-loaded, pivotally mounted fingerpiece having a spring loaded, pivotally mounted striker plate adapted to move said cartridges against their restraining springs and upon further pivoting to suddenly release said cartridge against a stop member, whereby portions of said contents of said cartridges are released.
- 15. The lighter recited in claim 11 wherein said cartridges are arranged in a vertical plane.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US24826472A | 1972-04-27 | 1972-04-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3788798A true US3788798A (en) | 1974-01-29 |
Family
ID=22938361
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00248264A Expired - Lifetime US3788798A (en) | 1972-04-27 | 1972-04-27 | Chemical ignition system for a cigarette lighter using an ignition aid |
Country Status (8)
Country | Link |
---|---|
US (1) | US3788798A (en) |
JP (1) | JPS4955470A (en) |
AU (1) | AU467632B2 (en) |
CA (1) | CA983733A (en) |
DE (1) | DE2321936A1 (en) |
FR (1) | FR2182126B1 (en) |
GB (1) | GB1432621A (en) |
HK (1) | HK20077A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3879163A (en) * | 1973-03-26 | 1975-04-22 | Ronson Products Ltd | Lighter assembly |
WO2006044866A2 (en) * | 2004-10-19 | 2006-04-27 | Earthcraft, Llc | Devices for high voltage ignition of combustible gas |
EP2536674A4 (en) * | 2010-02-15 | 2015-04-29 | Ght Global Heating Technologies Ag | A device for transferring heat and a related means of triggering a controlled combustion |
US20190360699A1 (en) * | 2018-05-24 | 2019-11-28 | Parker Eugene Holterman | Fire Starting Apparatus |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3394982A (en) * | 1966-06-23 | 1968-07-30 | North American Rockwell | Torch |
US3535065A (en) * | 1966-07-15 | 1970-10-20 | Nationale Sa | Igniter cartridge |
-
1972
- 1972-04-27 US US00248264A patent/US3788798A/en not_active Expired - Lifetime
-
1973
- 1973-04-19 GB GB1918973A patent/GB1432621A/en not_active Expired
- 1973-04-26 JP JP48046775A patent/JPS4955470A/ja active Pending
- 1973-04-26 CA CA169,636A patent/CA983733A/en not_active Expired
- 1973-04-26 FR FR7315109A patent/FR2182126B1/fr not_active Expired
- 1973-04-27 AU AU54924/73A patent/AU467632B2/en not_active Expired
- 1973-04-27 DE DE2321936A patent/DE2321936A1/en active Pending
-
1977
- 1977-04-28 HK HK200/77A patent/HK20077A/en unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3394982A (en) * | 1966-06-23 | 1968-07-30 | North American Rockwell | Torch |
US3535065A (en) * | 1966-07-15 | 1970-10-20 | Nationale Sa | Igniter cartridge |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3879163A (en) * | 1973-03-26 | 1975-04-22 | Ronson Products Ltd | Lighter assembly |
WO2006044866A2 (en) * | 2004-10-19 | 2006-04-27 | Earthcraft, Llc | Devices for high voltage ignition of combustible gas |
WO2006044866A3 (en) * | 2004-10-19 | 2006-10-05 | Earthcraft Llc | Devices for high voltage ignition of combustible gas |
US20080248435A1 (en) * | 2004-10-19 | 2008-10-09 | Terry Clark | Devices For High Voltage Ignition of Combustible Gas |
EP2536674A4 (en) * | 2010-02-15 | 2015-04-29 | Ght Global Heating Technologies Ag | A device for transferring heat and a related means of triggering a controlled combustion |
US20190360699A1 (en) * | 2018-05-24 | 2019-11-28 | Parker Eugene Holterman | Fire Starting Apparatus |
Also Published As
Publication number | Publication date |
---|---|
GB1432621A (en) | 1976-04-22 |
AU5492473A (en) | 1974-10-31 |
JPS4955470A (en) | 1974-05-29 |
CA983733A (en) | 1976-02-17 |
DE2321936A1 (en) | 1973-11-15 |
FR2182126A1 (en) | 1973-12-07 |
FR2182126B1 (en) | 1976-11-12 |
AU467632B2 (en) | 1975-12-04 |
HK20077A (en) | 1977-05-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: NIHON SIBER HEGNER, K.K. Free format text: SECURITY INTEREST;ASSIGNOR:RONSON CORPORATION A CORP OF NJ;REEL/FRAME:004286/0886 Effective date: 19840314 |
|
AS | Assignment |
Owner name: SECURITY PACIFIC BUSINESS CREDIT INC., 228 EAST 45 Free format text: SECURITY INTEREST;ASSIGNOR:RONSON CORPORATION;REEL/FRAME:004304/0018 Effective date: 19840516 Owner name: LAZERE FINANCIAL CORPORATION 60 EAST 42ND STREET, Free format text: SECURITY INTEREST;ASSIGNOR:RONSON CORPORATION;REEL/FRAME:004304/0018 Effective date: 19840516 |
|
AS | Assignment |
Owner name: FOOTHILL CAPITAL CORPORATION, A CORP. OF CA, ILLIN Free format text: SECURITY INTEREST;ASSIGNOR:RONSON CORPORATION;REEL/FRAME:004431/0132 Effective date: 19850614 |
|
AS | Assignment |
Owner name: RONSON CORPORATION, NEW JERSEY Free format text: RELEASE OF SECURITY INTEREST IN PATENTS;ASSIGNOR:WELLS FARGO FOOTHILL, INC.;REEL/FRAME:022248/0313 Effective date: 20090209 |