CN1720172A - Check valve for vacuum packing bags - Google Patents
Check valve for vacuum packing bags Download PDFInfo
- Publication number
- CN1720172A CN1720172A CNA2003801047772A CN200380104777A CN1720172A CN 1720172 A CN1720172 A CN 1720172A CN A2003801047772 A CNA2003801047772 A CN A2003801047772A CN 200380104777 A CN200380104777 A CN 200380104777A CN 1720172 A CN1720172 A CN 1720172A
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- Prior art keywords
- check valve
- boiler check
- valve body
- packaging bag
- hole
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
- B65D31/14—Valve bags, i.e. with valves for filling
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Packages (AREA)
- Vacuum Packaging (AREA)
Abstract
The present invention provides a check valve (100, 200) for vacuum packing bags, installed on a suction nozzle (2) of a packing bag (1) to discharge air from the bag 1 to the outside. The check valve (100, 200) comprises: a valve body (10, 210) including a hole (11, 211) formed at a central of a bottom of the valve body (10, 210), an inner space defined within the valve body (10, 210) above the hole (11, 211) and a projected section (14, 214) for being inserted into the suction nozzle (2), the projected section (14, 214) being reduced in diameter as extended away from the hole (11, 211); and means for opening and closing the hole (11, 211) installed in the inner space of the valve body (10, 210).
Description
Technical field
Present invention relates in general to be used for the boiler check valve of vacuum packaging bag, especially relate to a kind of boiler check valve that is installed on the vacuum packaging bag, its structure is improved, vacuum packet is equipped with article so that reduce wherein, such as bedcover, clothing and food, the volume of packaging bag, and allow aspirator, such as vacuum cleaner, on suction nozzle form a kind of airtight connection with this boiler check valve easily, realize high work efficiency thus.
Background technology
Usually, bedcover or thick winter clothing in that the time spent is not stored in the wardrobe.These article that are stored in the wardrobe can occupy sizable space, thereby are difficult to these article of storage in limited space.Also have, when food is stored in the vacuum envelopes, must utilize a vacuum packing machine that this vacuum envelopes is sealed.
For in limited space the storage described article, proposed a kind of with article storage in the packaging bag of making by polyethylene.Also have,, proposed a kind of vacuum-packing method that utilizes the suction nozzle of vacuum cleaner in order obviously to reduce the volume of article to be packaged.This vacuum-packing method is removed air from packaging bag, prevent that thus article to be packaged from suffering the mould that grows and the influence of moth in wardrobe, and these depend on humidity wherein.
Also have, proposed and commercially available a kind of improved packaging bag.According to this improved packaging bag, it is made by a kind of durable material, allows repeated usage thus.A kind ofly be used for the fastening slide fastener that wherein includes the described bag of article and be designed to have bilayer or multiple-structure, have good sealing effectiveness thus.Boiler check valve is installed in the pre-position on the described bag, so that air is disposed to the external world from bag, keeps the inside of bag to be in a kind of vacuum state thus.
As shown in fig. 1, Chang Gui boiler check valve 100 comprises a valve body 10.This valve body 10 is installed in a pre-position in the packaging bag 1 in such a way, promptly allows inrush of air and flows out this bag 1.
As shown in FIG., Yuan Xing valve body 10 comprises a hole 11.This hole 11 is formed at the center of the basal surface of valve body 10.A plurality of air guide wings 12 are 11 extensions towards the hole.Article one, packing seal guide channel 13 extends upward from the basal surface of valve body 10, so that be communicated with hole 11.One has externally threaded sleeve pipe 15 and is configured to limit packing seal guide channel 13.Circular Tape Dispenser 16 is formed at its outside around having externally threaded sleeve pipe 15, thereby makes and be placed on the Tape Dispenser 16 at a double sided adhesive tape T.
What limit packing seal guide channel 13 has external thread sleeve 15 from packaging bag 1 outside projection.A ring-shaped disc 60 is assemblied in this by the upper end from sleeve pipe 15 and has on the externally threaded sleeve pipe 15, and its lower surface is provided with another one double sided adhesive tape T, thereby makes that dish 60 closely is bonded on the outside face of packaging bag 1.
This conventional boiler check valve 100 also has a suction nozzle connecting device 3.This suction nozzle connecting device 3 cooperates with valve body 10 air-tightness.
Suction nozzle connecting device 3 comprises a deflation hole 3a.This deflation hole 3a is formed at the center of the substrate of suction nozzle connecting device 3.Two screwed cylindrical parts are set at the both sides of suction nozzle connecting device 3, in order to be communicated with deflation hole 3a.First parts 3b that has negative thread is set at the bottom place of suction nozzle connecting device 3, and with valve body 10 on have externally threaded sleeve pipe 15 and cooperate.Second parts 3c that has a negative thread is different with the diameter of parts 3b that first has negative thread, is set at the place, top of suction nozzle connecting device 3.Top surface edge along the substrate of suction nozzle connecting device 3 is formed with a guide groove 3d with desired depth.
A packing seal 20 (packing) is set in the hole 11 in the valve body 10, so that open or close closed pore 11 according to the swabbing pressure of vacuum cleaner.Second on stopper 5 and the suction nozzle connecting device 3 has interior threaded part 3 and cooperates, and packing seal 20 is supported in place.
Utilize conventional boiler check valve 100 that the method that bedcover is packaged in the packaging bag 1 is as described below.At first, bedcover is placed in the packaging bag 1, and will be arranged at the slide fastener closure of the opening part of bag 1.After this, will remain in air exhaustion in the packaging bag 1, in packaging bag 1, form vacuum thus by boiler check valve 100.
As among Fig. 2 in detail shown in, at stopper 5 by after boiler check valve 100 is removed, the suction nozzle 2 on the vacuum cleaner be placed with in such a way with suction nozzle connecting device 3 on guide groove 3d closed contact, promptly suction nozzle 2 is perpendicular to guide groove 3d.
When vacuum cleaner is worked in this state, remain in air in the packaging bag 1 by air guide wings 12 by sucking-offs fast, and subsequently in the ostium 11, wherein air guide wings 12 is set on the basal surface of valve body 10.
Meanwhile, packing seal 20 moves up under the suction of vacuum cleaner, opens hole 11 thus.When packing seal 20 moved up, air passed packing seal guide channel 13 in the valve body 10 and the deflation hole 3a on the suction nozzle connecting device 3 successively, is disposed to the external world thus.In this case, the differential air that remains in the packaging bag 1 is seldom removed fully, obviously reduces to wait to be vacuum-packed in the volume of the article in the packaging bag 1 thus.
When the volume of the article in packaging bag 1 to be packaged in the process of utilizing vacuum cleaner to aspirate no longer reduced, the suction nozzle 2 on the vacuum cleaner was removed from boiler check valve 100, so that stop to bleed operation.Meanwhile, automatically close closed pore 11 under the vacuum pressure effect that packing seal 20 produces in packaging bag 1.Next, when second on stopper 5 and the suction nozzle connecting device 3 had interior threaded part 3c and cooperate, the bottom of stopper 5 pressed down packing seal 20.Meanwhile, packing seal 20 is the hole 11 in the valve body 10 hermetic, keeps the vacuum state of bag 1 thus.
But when people wished by this way vacuum-packed article, article must at first be placed in the packaging bag 1.Next, the packaging bag 1 that includes described article must be placed on the smooth stayed surface.Thus, utilize the vacuum-packing method of conventional boiler check valve 100 to have such problem, be that the suction nozzle 2 that guide groove 3d must be flattened on placement and the vacuum cleaner must keep vertically, come and guide groove 3d closed contact, thereby be difficult to only utilize a hand that article are vacuum-packed in the packaging bag 1.That is to say that for article are vacuum-packed in the packaging bag 1, the user must utilize a hand grip to live suction nozzle 2 on the vacuum cleaner, utilizes an other hand grip to live suction nozzle connecting device 3 simultaneously.
User's accidental shifting his/her when grasping the hand of the suction nozzle 2 on the vacuum cleaner, outside air might flow in the gap that is formed at around the suction nozzle 2, reduces the pumping efficiency of vacuum cleaner thus.
Also have, utilize the vacuum-packing method of conventional boiler check valve 100 to have the another one problem, promptly when in packaging bag 1, forming vacuum, must utilize stopper 5 that hole 11 is closed, thereby feasible article are vacuum-packed in the packaging bag 1 becomes complicated, and stopper 5 might undesirably be lost.
When utilizing stopper 5 that hole 11 is closed, as shown in Figure 3, stopper 5 can be inevitably from packaging bag 1 upper process.Thus, when one or more packaging bag 1 that wherein includes article was got up by stacking, the outward appearance of the packaging bag 1 of stacking can become relatively poor owing to the stopper 5 of projection.
Utilize the vacuum-packing method of conventional boiler check valve 100 also to have a problem, promptly when several packaging bags 1 that wherein include article are got up by stacking, packaging bag 1 might be because the difference in height between the suction nozzle connecting device 3 of projection stopper 5 and projection and undesirably scratch and damage of quilt.
Summary of the invention
Therefore, the present invention makes in view of the aforementioned problems in the prior art, and the object of the present invention is to provide a kind of boiler check valve that is installed on the vacuum packaging bag, it is structurally improved, and vacuum packet is equipped with article so that reduce wherein, such as bedcover, clothing and food, the volume of packaging bag, and allow aspirator, such as vacuum cleaner, on suction nozzle and described boiler check valve form a kind of leak-tight joint easily, realize high work efficiency thus.
In order to realize aforementioned purpose, the invention provides a kind of boiler check valve that is used for vacuum packaging bag, be installed on the suction nozzle of a packaging bag, so that air is disposed to the external world from this packaging bag, this boiler check valve comprises: a valve body, comprise a hole that is formed at the bottom centre place of this valve body, an inner space that above described hole, is defined in this valve inner, and a jut that is used to be inserted within the described suction nozzle, the diameter of this jut is along with extending away from described hole and reducing; With the device that is used to open and close described hole, be installed in the inner space of described valve body.
Preferably, described opening and closing device comprises: the packing seal in described hole that is installed on the valve body, in order to open or to close described hole; A spring that is used for the described packing seal of resilient mounting; A lock cell is installed in the packing seal guide channel in the valve body and by spring and supports, and wherein said lock cell comprises: a substrate; A handle that is arranged at described substrate top; The direction protrusion (guide lugs) that extends from the opposite edges of described substrate; And be formed at deflation hole on the described substrate at the opposite side of described handle; And a cylindrical guide that is fitted in the described valve body, wherein this guiding device comprises: a through hole that is used for receiving from the bottom of this guiding device described lock cell; The sloping edge that forms along the side wall lower ends portion of this guiding device is so that guide the screw motion of the direction protrusion on the described lock cell; And the outward extending lock flange of sidewall upper limb along this guiding device, so that only lean against on the upper end of described jut.
Preferred also have, and described jut has an outside face, and this outside face has formed a part or the cone part of a spheroid.
Description of drawings
By the detailed description below in conjunction with accompanying drawing, aforementioned and other purpose, feature and other advantage of the present invention will be more clear, wherein:
Fig. 1 is a decomposition diagram, shows a conventional boiler check valve that is used for packaging bag;
Fig. 2 is a cutaway view, shows described conventional boiler check valve, and this moment, this boiler check valve was installed in the packaging bag;
Fig. 3 is a cutaway view, shows described conventional boiler check valve, and this moment, this boiler check valve was closed;
Fig. 4 is a decomposition diagram, shows a boiler check valve according to first embodiment of the invention;
Fig. 5 is a cutaway view, shows the boiler check valve according to first embodiment of the invention, and the suction nozzle on this moment aspirator is placed in this boiler check valve place;
Fig. 6 is a cutaway view, shows the boiler check valve according to first embodiment of the invention, and this moment, this boiler check valve was closed;
Fig. 7 is the plan view according to the boiler check valve of first embodiment of the invention, shows OPEN and CLOSED mark;
Fig. 8 is a decomposition diagram, shows a boiler check valve according to second embodiment of the invention; And
Fig. 9 is a cutaway view, shows the boiler check valve according to second embodiment of the invention, and the suction nozzle on this moment aspirator is placed in this boiler check valve place.
The specific embodiment
Be described in detail at the first embodiment of the present invention with reference to Fig. 4 to 7 below.
Fig. 4 is a decomposition diagram, shows one according to boiler check valve of the present invention.Fig. 5 is a cutaway view, shows boiler check valve according to the present invention, and the suction nozzle on this moment aspirator is placed in this boiler check valve place.Fig. 6 is a cutaway view, shows boiler check valve according to the present invention, and this moment, this boiler check valve was closed.Fig. 7 is the plan view of boiler check valve according to the present invention, shows OPEN and CLOSED mark.
According to the present invention, a boiler check valve 100 is installed in the packaging bag 1, in order to air is disposed to the external world from bag 1, and comprises a valve body 10, a lock cell 40 and a guiding device 50.Valve body 10 is installed in the packaging bag 1 in such a way, promptly runs through bag 1, allow thus by an aspirator (not shown), such as a vacuum cleaner, on suction nozzle 2 directly extract the air that remain in the bag 1 out.Lock cell 40 is used for control air flowing at boiler check valve 100.The operation of 50 pairs of lock cells 40 of guiding device is controlled, thus flowing according to the slew mode control air of lock cell 40.Boiler check valve 100 also has a disk 60, this disk 60 be fitted in valve body 10 lower outer periphery around, packaging bag 1 simultaneously is placed between disk 60 and the valve body 10.
Valve body 10 comprises that a hole 11, a plurality of air guide wings 12, packing seal guide channel 13 and one are hemispheric jut 14.Hole 11 is formed at the center of the basal surface of valve body 10.Radially 11 extensions of air guide wings 12 towards the hole.Packing seal guide channel 13 extends upward from the basal surface of valve body 10, so that be communicated with hole 11.Hemispherical projected section 14 is configured to limit packing seal guide channel 13 and allows suction nozzle 2 and hemispherical projected section 14 closed contacts.Valve body 10 also comprises an annular flange 15, and radially extend its bottom from hemispherical projected section 14, comes and disk 60 equipped (couple), thereby makes packaging bag 1 be fixed between annular flange 15 and the disk 60.
Valve body 10 is installed in the packaging bag 1 in such a way, and promptly the upper surface of this valve body 10 is bonded on the bag 1, and hemispherical projected section 14 runs through packaging bag 1.
A position above being positioned at spring 30, lock cell 40 is installed in the packing seal guide channel 13 in the valve body 10, is subjected to the pressure effect of spring 30 thus.Lock cell 40 comprises a handle 41, substrate in the form of annular discs 42, direction protrusion 44 and a deflation hole 43.Handle 41 is set on the upper surface of substrate 42 of lock cell 40.Direction protrusion 44 extends out from the opposite edges of substrate 42.Deflation hole 43 is formed on the substrate 42 at the opposite side of handle 41.
The rotation of 50 pairs of lock cells 40 of cylindrical guide is controlled, and control air is mobile thus, and cylindrical guide 50 comprises a through hole 51, sloping edge 52 and a lock flange 53.Through hole 51 is made into to allow that lock cell 40 is arranged on this guiding device 50 by the bottom from guiding device 50.Sloping edge 52 forms along the side wall lower ends portion of guiding device 50, in order to the screw motion of the direction protrusion 44 on the guiding lock cell 40.Lock flange 53 stretches out along the sidewall upper limb of guiding device 50, so that put on the upper end that only leans against hemispherical projected section 14.
Also have, OPEN and CLOSED mark are formed on the upper surface of disk 60, allow that thus the user controls boiler check valve 100 reliably and keeps or remove vacuum state.
The working process and the effect of boiler check valve that is used for vacuum packaging bag according to the present invention is as described below.
At first, bedcover is placed in the packaging bag 1, and the slide fastener (not shown) that is installed on bag 1 opening part is closed.
Next, the air that remains in the packaging bag 1 is drawn out of through being installed on the boiler check valve 100 in the packaging bag 1, forms vacuum in the inside of packaging bag 1 thus.When needs were disposed to the external world with air from bag 1, as shown in Figure 5, the handle 41 on the lock cell 40 was rotated by 90 degrees, and allowed that thus air freely flows by described boiler check valve.
That is to say, when handle 41 is rotated, direction protrusion on the lock cell 40 42 by along the sloping edge 52 of guiding device 50 from spiral moving up of off position, thereby make lock cell 40 be opened, allow that thus packing seal 20 moves freely.
In this case, packing seal 20 still remains on its off position under the elastic force effect of spring 30, and its mesopore 11 is closed by packing seal 20.
In this state, the suction nozzle 2 on the vacuum cleaner is located in such a way, promptly with valve body 10 on hemispherical projected section 14 closed contacts.In this case, suction nozzle 2 can be located in such a way, promptly perpendicular to hemispherical projected section 14.Selectively, shown in long and short dash line among Fig. 5, suction nozzle 2 can be with respect to hemispherical projected section 14 inclinations one angle orientation.The part of the hemispherical projected section 14 that comes in contact with suction nozzle 2 that is to say that because suction nozzle 2 has a circular cross section, and jut 14 has a half-spherical construction, so can limit a circle that equates with the bench section of suction nozzle 2 always.As a result, although suction nozzle 2 can not formed the gap by the angle orientation that tilts with respect to hemispherical projected section 14 between suction nozzle 2 and hemispherical projected section 14, allow that thus suction nozzle 2 stablizes and closely come in contact with hemispherical projected section 14.
In other words, regardless of the angle between suction nozzle 2 and the hemispherical projected section 14, suction nozzle 2 always with hemispherical projected section 14 closed contacts, thereby the suction nozzle 2 that the user only need utilize a hand grip to live on the vacuum cleaner utilizes this suction nozzle 2 to carry out the operation of bleeding, and implements to bleed operation thus easily.
When suction nozzle 2 was placed hemispherical projected section 14 places by this way, vacuum cleaner carried out work and produces suction.
Meanwhile, extract the air that remains in this packaging bag 1 out by the air guide wings 12 that is arranged in the bag 1.Next, in the hole 11 on the inrush of air valve body 10 of extraction.
When in the windstream hand-hole of extracting out 11, packing seal 20 moves up under the effect of air-flow.After this, the air in the ostium 11 is discharged by the deflation hole on the lock cell 40 43.Along with air is disposed to the external world, wherein include article, such as bedcover and clothing, the volume of packaging bag 1 obviously reduce.Also have, described article are vacuum-packed in the packing in the packaging bag 1, have restrained the growth of mould in packaging bag 1 thus, thereby prevent that described article from encroached on by bacterium.
Although packaging bag 1 does not have smooth placement when article are packaged in the packaging bag 1 of the boiler check valve 100 that has among the present invention, but the suction nozzle on the vacuum cleaner 2 still can only utilize single have gentle hands to change places be placed to packaging bag 1 on boiler check valve 100 closed contacts take place, easy to use thus.
When the volume of the packaging bag 1 that wherein includes article obviously reduced, suction nozzle 2 was removed by the hemispherical projected section from valve body 10 14, stops the suction operation of suction nozzle 2 thus.
Meanwhile, packing seal 20 is back to its initial position under the restoring force effect of spring 30, thereby makes hole 11 by SELF CL, keeps the inside of packaging bag 1 to be in vacuum state thus.When the handle on the lock cell 40 41 was rotated to off position, spring 30 and packing seal 20 all were pressed down, thereby made hole 11 be forced to close, and stably kept vacuum state thus.
In this case, lock cell 40 is arranged in boiler check valve 100 always, thereby makes it can not lose, and is easy to use thus.
When the boiler check valve 100 in utilizing the present invention was vacuum-packed in article in the packaging bag 1, described boiler check valve 100 is designed such that only had hemispherical projected section 14 from packaging bag 1 upper process, thereby made the height of comparing jut with conventional boiler check valve obviously reduce.Thus, when people wish several packaging bags 1 stacking got up, because the interference of boiler check valve reduces, so they can be got up by stacking fitly.Also have, valve body 10 is made by a kind of soft material, such as polyester (PE), and from packaging bag 1 projection that tilts, has prevented that thus the packaging bag from being damaged by the another one packaging bag.
Fig. 8 is a decomposition diagram, show a boiler check valve according to second embodiment of the invention, and Fig. 9 is a cutaway view, shows the boiler check valve according to second embodiment of the invention, and the suction nozzle on this moment aspirator is placed in this boiler check valve place.
Comprise a valve body 210 at the boiler check valve 200 shown in Fig. 8 and 9, this valve body has a cone part 214, in order to allow suction nozzle 2 (with reference to Fig. 5) and cone part (tapered cylindrical) 214 closed contacts.Hemispherical projected section 14 among first embodiment is replaced by the cone part among second embodiment 214.Boiler check valve 200 among second embodiment other structure basically with first embodiment in boiler check valve 100 in identical.
Thus, can understand boiler check valve 200 among this second embodiment have basically with first embodiment in boiler check valve 100 identical operations process and effects.
Industrial applicibility
As previously mentioned, the invention provides a kind of boiler check valve that is used for packaging bag, it has hemisphere portion or cone part, prevented from thus to be vertically located in the packaging bag or sloped position in packaging bag the time when the suction nozzle on the vacuum cleaner, form the gap between described suction nozzle and this boiler check valve, allow thus easily the article vacuum packaging, and compare easy to use with the boiler check valve of routine.
Also have, boiler check valve among the present invention is designed such that from the height of the semisphere of bag upper process or conical portion and is lower than jut on the conventional boiler check valve, reduce the interference between several packaging bags thus, thereby easily and fitly the packaging bag stacking is got up.
Although for purpose of illustration discloses the preferred embodiments of the present invention; but those of skill in the art will be appreciated that; under the condition that does not break away from disclosed protection domain of the present invention and spirit in claims, can carry out various improvement, interpolation and substitute.
Claims (6)
1, a kind of boiler check valve 100,200 that is used for vacuum packaging bag is installed on the suction nozzle 2 of a packaging bag 1, so that air is disposed to the external world from this packaging bag 1, this boiler check valve 100,200 comprises:
A valve body 10,210, comprise a hole 11,211 that is formed at the bottom centre place of this valve body 10,210, one is defined in this valve body 10,210 in-to-in inner spaces above hole 11,211, and a jut 14,214 that is used to be inserted within the suction nozzle 2, the diameter of this jut 14,214 is along with extending away from hole 11,211 and reducing; With
Be used to open and close the device in hole 11,211, be installed in the described inner space of valve body 10,210.
According to the boiler check valve described in the claim 1, it is characterized in that 2, described opening and closing device comprises:
Packing seal 20,220 in hole 10,210 that is installed on the valve body is in order to open or to close this hole 10,210;
A spring 30,230 that is used for resilient mounting packing seal 20,220;
A lock cell 40,240 is installed in the packing seal guide channel in the valve body, and is got up by spring 30,230 resilient mountings, and wherein this lock cell comprises:
A substrate 42,242;
A handle 41,241 that is arranged at substrate 42,242 tops;
The direction protrusion 44,244 that extends out from the opposite edges of substrate 42,242; And
Be formed at deflation hole 43,243 on the substrate 42,242 at the opposite side of handle 41,241; And
A cylindrical guide 50,250 that is fitted in the valve body 10,210, wherein this guiding device comprises:
A through hole 51,251 is used for receiving lock cell 40,240 from the bottom of this guiding device 50,250;
The sloping edge 52,252 that forms along the side wall lower ends portion of this guiding device 50,250 is so that the screw motion of the direction protrusion 44,244 on the guiding lock cell 40,240; And
The outward extending lock flange 53,253 of sidewall upper limb along this guiding device 50,250 is so that only lean against on the upper end of jut 14,214.
According to the boiler check valve described in the claim 1, it is characterized in that 3, described jut 14 has an outside face that forms the part of a spheroid.
According to the boiler check valve described in the claim 1, it is characterized in that 4, described jut 214 has an outside face that forms a cone part.
5, according to the boiler check valve described in the claim 1, also comprise a disk 60,260, the lower outer periphery of the jut 14,214 on this disk 60,260 and the valve body 10,210 is equipped, wherein valve body 10,210 also comprises an annular flange 15,215, this annular flange 15,215 radially extends from the bottom of jut 14,214, in order to equipped, thereby make packaging bag 1 be fixed between annular flange 15,215 and the disk 60,260 with disk 60,260.
6, according to the boiler check valve described in the claim 1, the upper surface of described disk 60,260 is provided with OPEN and CLOSED mark, allows that thus the user controls this boiler check valve, keeps or removes vacuum in the packaging bag.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20-2002-0030292U KR200302730Y1 (en) | 2002-10-10 | 2002-10-10 | Check valve of vacuum packing pack |
| KR2020020030292 | 2002-10-10 | ||
| KR2020030031455 | 2003-10-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1720172A true CN1720172A (en) | 2006-01-11 |
Family
ID=35931684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2003801047772A Pending CN1720172A (en) | 2002-10-10 | 2003-10-10 | Check valve for vacuum packing bags |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR200302730Y1 (en) |
| CN (1) | CN1720172A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010130089A1 (en) * | 2009-05-12 | 2010-11-18 | Chen Hsin-Yu | Vacuum non-return exhaust valve |
| CN114056771A (en) * | 2021-11-23 | 2022-02-18 | 中国人民解放军西部战区总医院 | Soft scope sealing protection device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101169484B1 (en) * | 2004-06-22 | 2012-07-27 | 페더럴-모걸 코오포레이숀 | Cylinder head gasket with one-way coolant flow valve |
-
2002
- 2002-10-10 KR KR20-2002-0030292U patent/KR200302730Y1/en not_active IP Right Cessation
-
2003
- 2003-10-10 CN CNA2003801047772A patent/CN1720172A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010130089A1 (en) * | 2009-05-12 | 2010-11-18 | Chen Hsin-Yu | Vacuum non-return exhaust valve |
| CN114056771A (en) * | 2021-11-23 | 2022-02-18 | 中国人民解放军西部战区总医院 | Soft scope sealing protection device |
Also Published As
| Publication number | Publication date |
|---|---|
| KR200302730Y1 (en) | 2003-01-30 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |