CN101389565A - Wristband-mounted dispenser for liquids or powders - Google Patents

Abstract

A bracelet to be worn on the wrist which includes a dispenser for dispensing liquid or powdered materials such as sunblocks or germicides. The dispenser on the palm side of the wrist and when the user presses an activator, the dispenser emits a portion of the material onto the user's palm. The dispenser is approximately the size of a wrist watch. A preferred embodiment of the dispenser employs a pump which will work at any orientation. The pump uses air pressure differences produced by the movement of a piston to pull the material into a chamber and expel it from the chamber through a one-way valve. The one-way valve in a preferred embodiment of the pump is made from a silicon diaphragm which opens when it flexes in response to pressure differences and a support for the diaphragm which permits it to flex in only one direction.

Description

Wrist strap mounted fluid or powder dispenser

The cross reference of related application

Present patent application requires to enjoy by John Yapaola in U.S. Provisional Patent Application 60/717 that submit to, that be entitled as " Wrist-mounted dispenser for hand-applied materials " on September 15th, 2005,507, and by John Yapaola and David Conroy in preceence that submit to, that be entitled as the U.S. Provisional Patent Application 60/811,088 of " Wristband-mounted topical lotion/liqiuid dispenser " on June 5th, 2006.The content of above temporary patent application this with referring to mode introduce in the present patent application to be used for any required purpose.

The relevant statement of research and development with official's patronage

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Technical field

The present invention relates to the distributing box of fluid and powder, more properly relate to the sort of distributing box with discontinuous quantity distributing fluids or powder.

Background technology

Under a lot of situations, need to apply local lotion or powder with hand continually.An example is to hand coating lotion or germicidal solution; Another example is the use of suncream or ultra light sun block lotion; The 3rd example then is the use of pest repellant.Due to the fact that: existing to use in the such environment in for example factory or seabeach needs, but local and be inconvenient to obtain one bottle of lotion or powder at these, it is more difficult that frequent use often becomes.If desired, the explanation of attempting to solve a method that makes solution or easily available this problem of powder can be found in the following link of 14 issues April in 2006: www.wristbands.com.au/sun_screen_wristbands.htm.Disclosed opacifier wrist strap is the body that holds the 50ml opacifier.This body is by closed with covers and have a form of wearing the bracelet on wrist or arm.In order to use this opacifier, need take off this bracelet and use this opacifier according to the using method of common tubulose opacifier subsequently from arm: the lid of outwarding winding, opacifier is clamp-oned from body in the palm of another hand with a hand, apply opacifier subsequently.Opacifier of coating is favourable every about one hour although the method is for only needing, and still there is the shortcoming of many practicality and aesthetic property aspect in it:

● for the material of for example bactericidal agent that need use at more frequent interval, comprise take off bracelet, the lid and to extrude the using method of suncream too time-consuming outwarded winding;

● bracelet is not provided for providing the mechanism of quantitative suncream.

● bracelet is unsuitable for loading once more;

● to such an extent as to bracelet is too huge and outstanding can not be worn when wearing common white collar or pink collar's working clothes.

Need a kind of wrist strap, it is used to distribute material, but is easier to use, and quantitative material is provided, and is suitable for loading once more, and can wears when wearing common white collar or pink collar's working clothes.Purpose of the present invention just provides a kind of such wrist strap.

Summary of the invention

Purpose of the present invention realizes that by a kind of bracelet this bracelet is connected with the distributing box that is used to distribute material.This distributing box has the space that is used to hold material, nozzle, and actuator, and in response to the finger pressure that acts on the actuator a part of material in this space is penetrated through this nozzle.The present invention further aspect comprises following content:

● this bracelet is worn on wrist, and this distributing box is positioned at the palmar side of wrist, and this nozzle is positioned on this distributing box, so that the material of ejection is directed to the palm of the hand that is connected in this wrist.

● this distributing box can be aimed at.A method of aiming at this distributing box is to make the bracelet bending.

● this space is charge material once more.

● material is contained in the container, by this container is put into this space this space is filled.

● material can be fluid or powder, and can have sterilization or sun-proof performance.

● this distributing box comprises pump, and this pump is by responding the finger pressure that act on this actuator on through this nozzle extraction with material from this space.This pump is not subjected to the influence of the orientation of this distributing box.

● the size of this distributing box and Watch dail plate is suitable, and this bracelet also can be used for bracelet extraly in the various aspects of using and will using.

The pump that uses in a preferred embodiment of this distributing box is included in the piston that moves in the pipe.

First check valve that this pipe has the end and is positioned at the wall of this pipe.This check valve is allowed in the air admission pipe but is stoped air from managing interior effusion.This pump also comprises air-tight chamber, and it is communicated with this end of this pipe, and can be communicated with the material source by second check valve.This second check valve only pressure in chamber is lower than when acting in the material source pressure on the material and opens.This air-tight chamber further is communicated with the 3rd check valve, and it is opened when only the pressure in chamber is higher than the pressure of opposite side of this valve.When the material source was communicated with this chamber, the operation of this pump was as follows: when piston when this end of this pipe is removed, the pressure in the chamber reduces, the part of material thereby enter this chamber from this source through this second check valve, until this piston by this first check valve.When this piston subsequently when this end of this pipe is retracted, the pressure in the pipe raises, the material in the chamber thereby move through the 3rd check valve.

In other respects, the amount that moves into the material in this chamber from this source depends on the position of this first check valve with respect to this end of this pipe, and the amount that raises of the pressure in the chamber depend on this piston in this pipe reference position and the distance between this end of this pipe.

The bearing that this pump of the preferred embodiment comprises the check valve of being made by flexible film and is positioned at a side of this film.This flexible film is between the space that may have different pressures.This film has opening, when this film is plane, and this opening closure, when the difference of this film in response between this pressure was crooked, this opening was opened gradually.This bearing is allowed one of them bending towards this space of this film, and does not allow that it is to another bending.

Description of drawings

Fig. 1 is the view of an embodiment that has the wrist strap of stock distributor;

Fig. 2 is a cover detailed view that can be used on an embodiment of the distributing box in the wrist strap shown in Figure 1;

Fig. 3 is a cover detailed view that can be used on another embodiment of the distributing box in the wrist strap shown in Figure 1;

Fig. 4 is the exploded drawings and the cross-sectional view strength of distributing box shown in Figure 3; And

Fig. 5 is the detailed view of the preferred embodiment of one-way spit valve.

Reference numeral in the accompanying drawing comprises three or long number more: the two digits on right side is by the Reference numeral in the accompanying drawing of all the other numerals.Therefore, the parts of representing with Reference numeral 203 are the parts 203 that at first occur in Fig. 2.

The specific embodiment

Summary of the invention

Fig. 1 provides the exterior view of the dispenser bracelet 101 of distributing fluids or powder.Dispenser bracelet 101 comprises wrist strap 103, thereby can wear as wrist-watch.The distributing box 104 that is installed on the wrist strap 103 comprises the tank body that holds the material (not shown), pump 105 and piston 107.The distributing box 104 roughly size with large-scale wrist-watch is suitable.For enabling this dispenser bracelet, the user pushes piston 107 when wearing bracelet.When the user did like this, a small amount of material that is assigned with out sprayed from shooting valve 109.The user wears bottom side in wrist with bracelet 101, and shooting valve is towards the palmar hand of user's hand.As user during with the finger presses piston of another hand, material will be stayed wrist and wear on the palm or finger of that hand of dispenser bracelet 101.The user can smear out material subsequently as required.Dispenser bracelet 101 can be disposable or filling type again, and can be single compartment distributing box or deposit varying number and the multicompartmented distributing box of the material of kind.The material that can use distributing box 101 to distribute comprises the hand disinfection cleaning liquid, ultra light sun block lotion, and suncream, perfume or pest repellant have only been pointed out the some of them of possible material.

The different embodiment of bracelet 101 can distribute and be continuous flow or predetermined quantitative material.Bracelet distributes material in response to the user's finger pressure that acts on the actuator (being piston 107 at this).This actuator also can be pressure-sensitive trigger or revolving wheel trigger.In a special simple embodiment of the present invention, the distribution portion of bracelet can be a reservoir, and it is made by flexiplast and comprises nozzle, and this nozzle just can be opened when only the pressure in reservoir is higher than ambient pressure.In such embodiments, actuator is the wall portion of reservoir, and the user only promptly enables this distributing box by the wall portion of pushing or pushing this reservoir.In certain embodiments, this wrist strap can have enough elasticity, material is aimed at by the position that changes distributing box 104 relative wrist straps to allow the user.In a further embodiment, can provide attaching parts between belt body and distributing box, this attaching parts allows that the user aims at material.For example, this attaching parts can allow that the user rotates the distributing box on the belt body.

The details of distributing box 104

First embodiment: Fig. 2

Fig. 2 is the detailed view 201 of first embodiment of distributing box 104.Figure 20 1 mainly is made up of the view 203 of pump 105, comprises detailed top view 204, partial side view 216, and back view 206.The three-dimensional views of distributing box 104 illustrates at 222 places.In these views, corresponding parts have identical Reference numeral.In the preferred embodiment, distributing box 101 is nonrecoverable versions.The material that is assigned with is contained in the gel bag 223 of the compartment 221 that is arranged in pump 105.In the embodiment of disposable dispenser 101, when producing distributing box 101, gel bag is placed in the compartment 221; In the embodiment of filling type again, the user can buy the gel bag of material separately and put it in the compartment 221.In such embodiments, can use compartment 221 by taking off protecgulum 205.

At first with reference to top view 204, the preferred embodiment of pump 105 comprises protecgulum 205.One-way spit valve 215 is arranged in the protecgulum 205.One-way spit valve 215 is allowed the material extraction pump 105 that drips shape, but does not allow air admission pump 105.Pump case 207 comprises pipe 217 and the guide rail 211 that is used for piston 209, and piston 209 moves in pipe 217.Air check valve 213 is allowed air admission pipe 217 but is not allowed that it is from managing discharge 217.When the people who uses distributing box 101 pushed, piston 209 moved forward in pipe 217.Should be noted in the discussion above that in the partial journey of piston 209 in pipe 217, the part 212 of piston 209 covers the opening of air check valve 213.

Then see lateral plan 216, piston 209 overcomes spring 210 actings.The user props up spring pushing piston 209, and spring 210 pushes back its reference position with piston.Piston 209 all does work in its return of stroke and forward stroke.In return of stroke, piston sucks material from gel bag 223, and at forward stroke, it forces material to pass through nozzle 215 extraction pumps 205.Except piston 209 and pipe 217, the operation of pump also relates to air check valve 213, one-way spit valve 215, check valve 225 and chamber 219 and 221.

● chamber 221 holds gel bag 223, and remains ambient pressure;

● the end and the chamber 219 of pipe 217 are interconnected by opening 218.Pressure in the chamber 219 depends on the action of piston 209 in pipe 217 and the mutual action of piston 209 and air check valve 213.

The operation cycle of pump 105 is as follows:

1, first stroke is the perfusion stroke.When this operation began, piston 209 was positioned at its home position in pipe 217, kept bar pressure in the chamber 219, and the interface that is assigned with material in the chamber 219 is positioned at one-way spit valve 215 belows.When the user promotes piston 209 when pipe moves forward in 217, the air pressure in the chamber 219 raise, and pressure forces one-way spit valve 215 to be opened.

2, in the ultimate position of forward stroke, spring 210 forces piston 209 to return.Return of stroke comprised for two stages: in F/s, air check valve 213 is covered by the part 212 of piston 209, and in subordinate phase, air check valve 213 is not covered by part 212.

A), in chamber 219, form vacuum owing to choker relief valve 213 in the F/s of return of stroke is capped.In response to this vacuum, one-way spit valve 215 remains closed, and the ambient pressure in the chamber 221 acts on gel bag 223 and is discharged in the chamber 219 to force the material inclusion.To manage 217 and the size of chamber 219 and the position of air check valve 213 in pipe 217 select so that the major part of the amount filled chamber 219 of the material that is squeezed out.

B) in subordinate phase, air check valve 213 is not capped, thereby, be full of atmospheric air in the pipe 217.

3, in ensuing forward stroke, air check valve 213 prevents the air exhaustion chamber in the chamber 217, thereby pressurized air enters chamber 219 by opening 218, forces the material that is drawn in the chamber in the F/s of return of stroke before this to discharge one-way spit valve 215 this its.The amount that is forced to the material of discharge depends on the size of chamber 217, the position of one-way spit valve 215 in chamber and the length of stroke that is positioned at the piston of check valve rear side.

At ensuing stroke backward, as above this ground, chamber 219 is fill material once more, manages 217 and is full of air once more, and circulation is proceeded.

At correlative technology field, check valve 213 and 225 is gauge members.One-way spit valve 215 is to use the modification of the anti-drip valve on the tartar sauce bottle.These anti-drip valve are silicon thin films, and it comprises slit, and when film in response bloated in the difference of pressure of its both sides, this slit was opened, and when difference of pressure disappears, it is closed once more.Because this anti-drip valve auto-closing, condiment sauce is discharged at one stroke, rather than oozes.By the same token, when material was discharged from chamber 219, it also was to discharge at one stroke, rather than oozes.

Will be used for the similar anti-drip valve of anti-drip valve on the catsup bottle as shooting valve 215, its problem is, when the air pressure in the catsup bottle during less than bar pressure, anti-drip valve also can be opened to allow the air admission catsup bottle.Although this is desirable for catsup bottle, when having vacuum in chamber 219, one-way spit valve 215 necessarily can not be opened.The movement in one direction of valve 215 realizes that by bearing 220 when having vacuum in chamber 219, bearing 220 prevents that shooting valve 221 from making air admission because of bloating to open, but does not hinder the content of chamber 219 to arrive at shooting valve 215 fully.Thereby when the pressure in the chamber 215 was higher than bar pressure, the air or the material that are contained in the chamber 219 can be discharged by one-way spit valve 215, but when having vacuum in chamber 219, it is airtight that this one-way spit valve keeps.

Second embodiment: Fig. 3-5

Fig. 3 shows each width of cloth view of second embodiment 301 of distributing box 104.Distributing box 301 is according to the groundwork operation same with first embodiment 201.303 show lateral plan, and 311 show top view, and 313 show end elevation.The 3-D view that obtains from front side and rear side is shown in 313; Hold the gel bag 317 that is assigned with material and comprise check valve 319.Parts at this distributing box of paying close attention to 301 are housings 305, protecgulum 309, piston 307 and nozzle 315.In distributing box 301, protecgulum 309 can take off, and replaces gel bag 317 to allow.

Fig. 4 shows the exploded view 401 and the cross-sectional view strength 413 of distributing box 301.From exploded drawings 401 left sides, as seen have the protecgulum 309 in the hole 402 that is used for nozzle 315, and a nozzle 315, this nozzle comprises two parts: shooting valve 403 and be used to the bearing 405 that prevents that shooting valve 403 is crooked to the right.To body, piston 307 moves in this body by channel connection for material chamber 407, and this chamber comprises cavity, when piston 307 is mobile backward, injects the material from gel bag 317 in this cavity.Be subsequently: the gel bag 317 that has check valve 319; Housing 305, the hole 409 that has the chamber 408 that is used for gel bag 317 and belong to the passage that is communicated with this body and material chamber 407; The spring 411 that is used for piston 307; And be piston itself at last.

Cross-sectional view strength 401 show the cavity 419 in the material chamber 407 in addition and be used to connect cavity 419 to the hole 409 passage 421.Hole 409 is connected to pipe 415 in turn, and piston 307 moves in this pipe.Check valve 423 will be managed 415 and will be connected to the chamber 408 that is used for gel bag 317.Passage 425 guarantees to keep in the chamber 408 normal pressure.Distributing box 301 is operated in identical mode with distributing box 201.The usefulness of distributing box 301 is as follows:

1, the location arrangements of air check valve 423 becomes to lead to cavity 408, has reduced the whole height of distributing box 301 and choker relief valve 423 has been played protective action;

2, material chamber 419 is designed so that to form the material in gel bag 317 intake chambers 419 the possibility minimum of air bag.Bag like this prevents that the gas shock that piston produces from all discharging the material in the chamber 419 when move pipe 415 end.For material, make the maximization of gas shock power particularly important with viscosity higher.

3, this shooting valve is reorientated, so that the nozzle 318 of itself and gel bag in line.This new location has also prevented to form airbag in the material in the chamber 419.

The details of one-way spit valve 315: Fig. 5

One-way spit valve 315 comprises silicon valve 403, and the registered trade mark (RTM) of such silicon valve is called SimpliSqueeze, is produced by Seaquist Closures, and the company locus is 711 Fox St., Mukwonago, WI53149.As Fig. 5 403 shown in, valve 403 is the silicon thin films 502 that have slit 501.When the pressure official post film 502 of film 502 both sides when pressure bloats than downside, by the flap backrush that slit 501 limits out, material can be by the part of this film between this slit.Usually be applied to be similar to the occasion of catsup bottle with valve 403 similar silicon valves.When the extruding catsup bottle, valve outwards bloats and opens, and condiment sauce drips to be gushed out, and this valve no longer outwards bloats and be closed, inwardly blasts subsequently and opens once more to allow the air admission catsup bottle.In case the pressure of valve both sides equates that this valve promptly no longer bloats and be closed.

In the time of in silicon valve 403 is used in one-way spit valve 315, the pressure in chamber 419 is during greater than bar pressure, and it must outwards bloat, but the pressure in chamber 419 still remains closed during less than bar pressure.When the pressure in the chamber 419 during less than bar pressure, inwardly do not blast if do not allow this valve, this valve will still remain closed.In order to prevent that valve 403 from blasting, preferred embodiment has been used bearing 405.Bearing 405 comprises the surface 503 of groove 505 and bearing film 402, and when valve 403 is opened, groove 505 is allowed materials in the chamber 419 by bearing 405, and when chamber 419 was lower than bar pressure, this bearing 405 prevented that valve 403 from blasting and opening.The detailed cross-sectional view strength that shows protecgulum 309 at 507 places and the parts 403,405 of one-way spit valve 315 within it are installed.

Conclusion

Above detailed description is that various equivalent modifications discloses how to make and use the device that is used to distribute material, this device comprises bracelet and distributing box and pump and the check valve that is adopted in a preferred embodiment of this distributing box, also further disclose the best mode that this device that is used to distribute material, pump and check valve were made and used in known being used to of inventor.Yet, for those skilled in the relevant art, according in the device that is used to distribute material, pump or the check valve of this disclosed operate can with all many-sides with have the diverse ways manufacturing in this disclosed preferred embodiment, this point is conspicuous.For example, when the user presses hydraulic actuator, this distributing box can use any available technology so that material is transported to user's palm from the receiver of distributing box, material can be any material that can advantageously distribute in this way, and this bracelet can be made by any way that is fit to purposes.The valve that is pursuant to the principle manufacturing of this disclosed valve can be any specification, and its parts relative to each other can have multiple different layout.Similar ground, film in this disclosed check valve can be made by any material, this material have when it is crooked with its crooked with open relevant essential performance, and, this bearing can realize by any way, and is crooked and prevent that film is to another direction bending along a direction to allow film.Based on above these reasons, in any case it is exemplary and nonrestrictive that this detailed description should be considered to, should not determine in this disclosed scope of the present invention, and should be determined by the claim that makes an explanation in the gamut of allowing in patent law by this detailed description.

Claims (31)

1, a kind of device that is used to distribute material comprises:

Bracelet; And

Be connected to the stock distributor of this bracelet, this distributing box comprises

The space that is used for material;

Nozzle; And

Actuator;

This dispatcher responds is in the finger pressure that acts on this actuator, goes out to be contained in partial material in this space by this nozzle ejection.

2, the device that is used to distribute material as claimed in claim 1 is characterized in that:

This bracelet is worn at wrist, makes this distributing box be positioned at the palmar side of this wrist; And

This nozzle is positioned on this distributing box, makes the material that ejects be directed to the palm of the hand that is connected in this wrist.

3, the device that is used to distribute material as claimed in claim 2 is characterized in that:

This bracelet is flexible, thereby this distributing box can be aimed at.

4, the device that is used to distribute material as claimed in claim 1 is characterized in that:

This distributing box can be aimed at.

5, the device that is used to distribute material as claimed in claim 4 is characterized in that:

This bracelet is flexible; And

By making crooked this distributing box of aiming at of this bracelet.

6, the device that is used to distribute material as claimed in claim 1 is characterized in that:

This space is charge material once more.

7, the device that is used to distribute material as claimed in claim 6 is characterized in that:

Material is contained in the container; And

By this container is put into this space and is filled this space once more.

8, as any described device of claim 1-7, it is characterized in that:

Material is a fluid.

9, as any described device of claim 1-7, it is characterized in that:

Material is a powder.

10, as any described device of claim 1-7, it is characterized in that:

The material energy that has microbe killing properties.

11, as any described device of claim 1-7, it is characterized in that:

Material has the performance that protection skin is avoided solar radiation.

12, as any described device of claim 1-7, it is characterized in that this distributing box also comprises:

Pump, this pump in response to act on finger pressure on this actuator from this space through this nozzle pumping material.

13, device as claimed in claim 12 is characterized in that:

The operation of this pump is not subjected to the influence of the orientation of this distributing box.

14, as any described device of claim 1-7, it is characterized in that:

The size of this distributing box roughly dial plate with wrist-watch is suitable.

15, as any described device of claim 1-7, it is characterized in that:

This bracelet also can be used in addition bracelet use and will use times close aspect.

16, a kind of pump comprises:

Piston, this piston moves in pipe, and this pipe comprises the end and is positioned at first check valve of the wall portion of this pipe that this check valve is allowed this pipe of air admission, but stops air to be overflowed from this pipe; And

Air-tight chamber, the material source can be communicated with this air-tight chamber by second check valve, when being lower than pressure on the material that acts in this source, opens the pressure of this second check valve in chamber, this air-tight chamber further is communicated with this end and the 3rd check valve of this pipe, the 3rd check valve is opened when only the pressure in chamber is higher than pressure on the 3rd check valve opposite side

When the material source is communicated with this chamber, this piston is removed from this end of this pipe, and when reducing the pressure in the chamber, thereby this pump running makes the part of material enter this chamber from this source through this second check valve, until this piston by this first check valve; And when this piston is retracted with the pressure in the rising chamber towards this end of this pipe subsequently, thereby this pump running makes the material in the chamber move through the 3rd check valve.

17, pump as claimed in claim 16 is characterized in that:

The a part of inventory that moves in this chamber from this source depends on the position of this first check valve with respect to this end of this pipe.

18, pump as claimed in claim 16 is characterized in that:

This piston comprises reference position, and this piston is moved to this end of this pipe by this reference position; And

The distance between this end of this reference position and this pipe is depended in the rising of this cavity indoor pressure.

19, pump as claimed in claim 16 is characterized in that:

This pump comprises spring, and this spring forces this end that this piston leaves this pipe to reference position, and this reference position is outside this first check valve.

20, pump as claimed in claim 16 is characterized in that:

This spring is positioned at this pipe.

21, pump as claimed in claim 16 is characterized in that:

This chamber configuration becomes to prevent to form in the material airbag when moving into this chamber from this source material.

22, pump as claimed in claim 16 is characterized in that:

This second and the 3rd check valve roughly is positioned at position respect to one another in this chamber.

23, pump as claimed in claim 16 is characterized in that, the 3rd check valve comprises:

The flexible thin film, it has opening, and when this film was plane, this opening closure was when pressure and the difference pressure chamber outside between and when crooked, this opening gradually open of this film in response in chamber; And

When bearing, the pressure in chamber were higher than pressure outside the chamber, this bearing was allowed this film bending, but when the pressure outside the chamber was higher than pressure in the chamber, this bearing stoped this film bending.

24, pump as claimed in claim 23 is characterized in that:

This bearing also allows material from the film of this chamber by bending.

25, pump as claimed in claim 16 is characterized in that:

The parts of this pump form module, this module comprises first side, actuator is arranged at this first side, this actuator turns round when being subjected to finger pressure, so that this piston moves to this end of this pipe, the material source is positioned at this module space parallel with this pipe, and the 3rd check valve is positioned at second side of this module, and this second side is relative with this first side.

26, a kind of pump wherein utilizes the difference of pressure of gas to move material and passes in and out chamber in this pump, it is characterized in that:

Piston, be positioned at pipe, this pipe has the end that is connected in this chamber, this pipe has check valve, this check valve is allowed that gas enters this pipe but do not allow that gas discharges from pipe, the motion that this piston leaves this end reduces the gaseous tension in the chamber, pass through this check valve until this piston, and, this piston raises the gaseous tension in the chamber towards the motion of this end, thus, the motion of leaving this end by this piston is moved the inventory that enters in this chamber and depends on the position of this check valve with respect to this end of this pipe.

27, pump as claimed in claim 16 is characterized in that:

This piston has reference position, and this piston is moved to this end of this pipe by this reference position; And

Pressure in this chamber distance between this end of depending on this reference position and this pipe that raises.

28, a kind of check valve comprises:

The flexible thin film, it is between the space that may be in different pressures, and this film has opening, and when this film was plane, this opening closure was when the difference between this pressure of this film in response and when crooked, this opening is opened gradually; And

Bearing is positioned at a side of this film, and it allows the bending of this film in this space, and does not allow that this film is to another bending.

29, check valve as claimed in claim 28 is characterized in that:

This bearing also allows material to pass through crooked film.

30, check valve as claimed in claim 28 is characterized in that:

This flexible thin film comprises first support;

This bearing comprises second support; And

This first support and this second support are about a certain axis coaxle, and this axis normal is in this flexible thin film.

31, check valve as claimed in claim 30 is characterized in that:

This bearing occupies the middle section of this second support; And

Between this bearing and this second support, have one or more holes.

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