USRE34204E - Pressure regulation device for vehicle safety air bag - Google Patents
Pressure regulation device for vehicle safety air bag Download PDFInfo
- Publication number
- USRE34204E USRE34204E US07/658,760 US65876091A USRE34204E US RE34204 E USRE34204 E US RE34204E US 65876091 A US65876091 A US 65876091A US RE34204 E USRE34204 E US RE34204E
- Authority
- US
- United States
- Prior art keywords
- envelope
- gas
- fabric
- pressure
- air bag
- 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
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/23—Inflatable members
- B60R21/239—Inflatable members characterised by their venting means
Definitions
- the present invention relates to a pressure regulation device for a vehicle safety air bag which is provided to protect a passenger of a car or other vehicle from a secondary collision.
- a bulbous-shaped envelope is folded and stored at the center of the steering wheel and is rapidly inflated by a gas generated virtually instantaneously by an inflator at the moment of a collision in order to prevent the driver, who is thrown forward by inertial force, from hitting the steering wheel directly, to absorb and damp the energy imposed on the driver by the inertial force, and to spread the load of the impact over the driver's torso.
- the maximum internal pressure of the air bag main envelope is typically 1.0 kg/cm 2 when it is inflated, and its normal pressure is 0.7 kg/cm 2 . Therefore, the air bag envelope must be fabricated so as to withstand these pressures, but if the pressure is too high, a high repelling or rebound force will develop and will propel the driver back away from the air bag, thereby possibly causing whiplash injury to the driver. It is known, therefore, to provide a pressure-relief device in order to keep the internal pressure from exceeding a predetermined level.
- One such device is simply a vent orifice that allows gas to escape when the driver strikes the inflated envelope and the internal pressure rises.
- the conventional pressure-relief vent hole structures are of the type wherein a normally-open vent hole is disposed in the envelope and of the type wherein a film of a synthetic resin or the like is disposed in the vent hole so that the film is broken by a gas pressure above a predetermined pressure.
- a normally-open vent hole is disposed in the envelope
- a film of a synthetic resin or the like is disposed in the vent hole so that the film is broken by a gas pressure above a predetermined pressure.
- the open vent hole if the size of the hole is determined based on a low external or ambient temperature, the gas pressure will become excessive when the temperature is high, and if the size of the hole is determined based on a high ambient pressure, the gas pressure will be insufficient when the temperature is low.
- vent holes with a rupturable film when the film is broken at pressures above a predetermined level, the fragments of the film scatter.
- the open area of the vent hole remains substantially the same irrespective of the gas pressure, and the gas pressure, which varies with the ambient temperature, cannot be regulated.
- the damping property when the driver hits the bag as a function of ambient temperature.
- An object of the present invention is to provide an improved pressure relief device for vehicle safety air bags and, in particular, to provide a pressure relief device in which the sizes of openings in the envelope for release of gas increase, the greater the internal gas pressure.
- the air bag envelope which is made of a conventional coated fabric, comprises first and second portions disposed in overlapping relation along their respective margins and a stitched thread seam along the overlapping margins that is adapted to open up to a degree that varies in accordance with the level of gas pressure in the envelope and to allow gas to escape along the opened-up seam.
- FIG. 1 is a schematic elevational view of a typical air bag installation in which the present invention is useful
- FIG. 2 is a plan view of a first embodiment of the invention, the view being of the aspect that faces away from the driver;
- FIG. 3A is a plan view of a portion of the main envelope of the first embodiment
- FIG. 3B is a plan view of a patch that forms a second portion of the envelope
- FIG. 3C is a plan view of the assembly of the first embodiment
- FIG. 4A is a diagrammatic view of the first embodiment in which the pressure-relief seam is intact
- FIG. 4B is a diagrammatic view in which the seam has opened up
- FIG. 5A is a side cross-sectional view of a second embodiment
- FIG. 5B is a plan view of the aspect of the envelope of the second embodiment that faces away from the driver;
- FIG. 6A is a fragmentary cross-section of a seam that is intact.
- FIG. 6B is a detail cross-section of a seam that has opened up for pressure relief.
- reference numeral 1 designates a bulbous air bag main envelope and reference numeral 2 an inflator which is fitted to an opening of the envelope and consists of an instantaneous gas generator.
- the air bag envelope 1 is folded and stored in a storage receptacle built into the center of a steering wheel 3.
- the inflator 2 is operated by a sensor (not shown), releases a pressurized gas into the air bag envelope 1 and inflates it.
- Stitched thread seams 4 for regulating the gas pressure are disposed on the air bag envelope 1 on the steering wheel side (the aspect facing the steering wheel), as shown in FIG. 1 and these seams 4 are arranged equidistantly around the opening 2a of the air bag main body 1 as shown in FIG. 2.
- Reference numeral 2b represents holes for fasteners that secure the air bag to the steering wheel.
- each pressure-regulation seam 4 is constituted in the following way.
- the air bag envelope consists of a cloth 1c produced by disposing a lining film 1b of a polymeric material, such as silicone rubber, on the inner surface of a woven fabric 1a.
- a lining film 1b of a polymeric material such as silicone rubber
- an oblong vent hole 4a is formed on this bag cloth 1c with the longer dimension placed along the bias of the threads of the fabric 1c.
- a patch is applied over the vent hole 4a, as shown in FIG. 3B.
- the margin of the patch 4b overlaps the margin of the envelope around the hole 4a.
- the patch 4b is produced by disposing a resin coat film 4b-2 of silicone resin, rubber, or the like on a plain woven fabric 4b-1.
- the patch 4b is applied to the envelope 1c in such a manner as to cover the vent hole 4a and is stitched by sewing threads along the margin of the hole.
- the remaining outer portion of the patch 4b outwardly of the seam 4c is bonded to the envelope cloth by an adhesive.
- the patch 4b When the gas pressure in the inflated envelope is below a certain pressure, the patch 4b remains substantially intact, the state shown in FIG. 4A, even if it expands.
- the gas pressure exceeds the predetermined pressure, shearing stress develops between the sewing threads 4c and the patch 4b, which is distended by the gas pressure as shown in FIG. 4B, so that deviation of threads, that is, opening of the cloth, occurs in the patch cloth 4b.
- the resin coat film 4b-2 is broken and the gas leaks out through the ruptures in the film.
- the opening up of the cloth becomes greater with a higher gas pressure, and the greater area of the openings allows greater rates of gas leakage.
- the overall operation of the embodiment is as follows.
- the sensor senses the collision, and the inflator 2 generates and supplies the gas into the folded air bag envelope 1 through its opening 2a, thereby inflating the air bag envelope 1.
- the pressure of the generated gas is relatively low, for example, below 0.7 kg/cm 2 .
- the patch 4b of the pressure regulation seam portion 4 remains intact (FIG. 4A) and, hence, the gas does not leak.
- the pressure of the gas becomes relatively greater, and if it is above 0.7 kg/cm 2 , for example, the patch 4b is deformed and opened up by the gas pressure, and the resin coat film 4b-2 is ruptured.
- the degree of deformation and opening up of the cloth increases with an increasing gas pressure so that the quantity of the leaking gas becomes greater and the inner pressure can be kept constant.
- the inner pressure can be regulated to a predetermined level, even when the generated gas pressure is high, and if the driver hits the bag under this state, the energy can be absorbed and the driver is not repelled back.
- FIGS. 5 and 6 A cloth piece 5 having a resin coat film 4b on a plain woven fabric 5a and a cloth piece 6 having a resin coat film 6b on a plain woven fabric 6a are sewn together to form a portion of a bulbous envelope.
- the piece 6 has an opening 6c, and a cloth 7 piece having a resin coat film 6b on a plain woven fabric 7a is sewn by a thread to form a seam 4' along the respective overlapping margins of the pieces 6 and 7.
- An opening 7c is formed at the center of the piece 7, and bolts are inserted into bolt holes 7d around the periphery of the opening 7c so that the inflator 2 can be fitted, as shown in FIG. 4(a).
- the seam 4' under the intact state where the gas pressure is low and the gas does not leak changes when the gas pressure is high to the state where shearing stress develops between the piece 6 and the piece 7 due to the high gas pressure, as shown in FIG. 6B, so that the threads oriented at right angles to the stretching direction of the respective fabrics 6a and 7a on one side, with the stitching threads 8 being the boundary, are pushed while the .[.treads.]. .Iadd.threads .Iaddend.on the other side are stretched and the resin coat films 6b and 7b are broken. This breakage occurs on the mutually opposite sides of the pieces 6 and 7, and the gas leaks through the open fabrics on the stretched sides, thereby keeping the gas pressure constant.
- the stitched thread seams between portions of the envelope cause the fabrics to open up and the coatings to break to degrees that are variable in accordance with the gas pressure above a predetermined gas pressure.
- the intrusion of the threads of the stitched seams between threads of the fabrics in the overlapping margins of portions of the envelope inhibits normal stretching of the fabrics and creates localized high stresses, which is what causes the fabrics to distend and open up along the seams and produces ruptures in the film coatings.
- the greater the internal gas pressure the greater the stresses and the consequent ruptures of the film. Accordingly, gas is released in increasing amounts, the greater the pressure, and the overall gas pressure can be kept constant.
- the film is broken substantially uniformly if the pressure is above a predetermined pressure, and the gas is often released from the envelope unnecessarily.
- the present device can utilize the gas pressure more efficiently, so that the inflator can be made more compact, and a great advantage can be obtained in connection with the amount of space required for the inflator.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air Bags (AREA)
Abstract
Stitched thread seams between fabric elements of the envelope of a vehicle safety air bag induce localized distension and opening up of the envelope fabrics along the seams, thereby causing the film coatings of the envelope fabric to rupture along the seam and allow gas to escape and maintain a substantially constant overall maximum pressure, regardless of variations in ambient temperature.
Description
The present invention relates to a pressure regulation device for a vehicle safety air bag which is provided to protect a passenger of a car or other vehicle from a secondary collision. In an air bag of this type a bulbous-shaped envelope is folded and stored at the center of the steering wheel and is rapidly inflated by a gas generated virtually instantaneously by an inflator at the moment of a collision in order to prevent the driver, who is thrown forward by inertial force, from hitting the steering wheel directly, to absorb and damp the energy imposed on the driver by the inertial force, and to spread the load of the impact over the driver's torso.
The maximum internal pressure of the air bag main envelope is typically 1.0 kg/cm2 when it is inflated, and its normal pressure is 0.7 kg/cm2. Therefore, the air bag envelope must be fabricated so as to withstand these pressures, but if the pressure is too high, a high repelling or rebound force will develop and will propel the driver back away from the air bag, thereby possibly causing whiplash injury to the driver. It is known, therefore, to provide a pressure-relief device in order to keep the internal pressure from exceeding a predetermined level. One such device is simply a vent orifice that allows gas to escape when the driver strikes the inflated envelope and the internal pressure rises.
In particular, the conventional pressure-relief vent hole structures are of the type wherein a normally-open vent hole is disposed in the envelope and of the type wherein a film of a synthetic resin or the like is disposed in the vent hole so that the film is broken by a gas pressure above a predetermined pressure. In the case of the open vent hole, if the size of the hole is determined based on a low external or ambient temperature, the gas pressure will become excessive when the temperature is high, and if the size of the hole is determined based on a high ambient pressure, the gas pressure will be insufficient when the temperature is low. In the case of vent holes with a rupturable film, when the film is broken at pressures above a predetermined level, the fragments of the film scatter. Therefore, the open area of the vent hole remains substantially the same irrespective of the gas pressure, and the gas pressure, which varies with the ambient temperature, cannot be regulated. Thus, there is in both types of vent devices variation in the damping property when the driver hits the bag, as a function of ambient temperature.
An object of the present invention is to provide an improved pressure relief device for vehicle safety air bags and, in particular, to provide a pressure relief device in which the sizes of openings in the envelope for release of gas increase, the greater the internal gas pressure.
In accordance with the present invention, the air bag envelope, which is made of a conventional coated fabric, comprises first and second portions disposed in overlapping relation along their respective margins and a stitched thread seam along the overlapping margins that is adapted to open up to a degree that varies in accordance with the level of gas pressure in the envelope and to allow gas to escape along the opened-up seam.
For a better understanding of the invention reference may be made to the following description of exemplary embodiments, taken in conjunction with the accompanying drawings.
FIG. 1 is a schematic elevational view of a typical air bag installation in which the present invention is useful;
FIG. 2 is a plan view of a first embodiment of the invention, the view being of the aspect that faces away from the driver;
FIG. 3A is a plan view of a portion of the main envelope of the first embodiment;
FIG. 3B is a plan view of a patch that forms a second portion of the envelope;
FIG. 3C is a plan view of the assembly of the first embodiment;
FIG. 4A is a diagrammatic view of the first embodiment in which the pressure-relief seam is intact;
FIG. 4B is a diagrammatic view in which the seam has opened up;
FIG. 5A is a side cross-sectional view of a second embodiment;
FIG. 5B is a plan view of the aspect of the envelope of the second embodiment that faces away from the driver;
FIG. 6A is a fragmentary cross-section of a seam that is intact; and
FIG. 6B is a detail cross-section of a seam that has opened up for pressure relief.
In FIG. 1 reference numeral 1 designates a bulbous air bag main envelope and reference numeral 2 an inflator which is fitted to an opening of the envelope and consists of an instantaneous gas generator. The air bag envelope 1 is folded and stored in a storage receptacle built into the center of a steering wheel 3. When the car undergoes a collision, the inflator 2 is operated by a sensor (not shown), releases a pressurized gas into the air bag envelope 1 and inflates it.
Stitched thread seams 4 for regulating the gas pressure are disposed on the air bag envelope 1 on the steering wheel side (the aspect facing the steering wheel), as shown in FIG. 1 and these seams 4 are arranged equidistantly around the opening 2a of the air bag main body 1 as shown in FIG. 2. Reference numeral 2b represents holes for fasteners that secure the air bag to the steering wheel.
Each pressure-regulation seam 4 is constituted in the following way. As shown in FIG. 3A, the air bag envelope consists of a cloth 1c produced by disposing a lining film 1b of a polymeric material, such as silicone rubber, on the inner surface of a woven fabric 1a. For each pressure relief seam 4 an oblong vent hole 4a is formed on this bag cloth 1c with the longer dimension placed along the bias of the threads of the fabric 1c. A patch is applied over the vent hole 4a, as shown in FIG. 3B. The margin of the patch 4b overlaps the margin of the envelope around the hole 4a.
The patch 4b is produced by disposing a resin coat film 4b-2 of silicone resin, rubber, or the like on a plain woven fabric 4b-1. The patch 4b is applied to the envelope 1c in such a manner as to cover the vent hole 4a and is stitched by sewing threads along the margin of the hole. The remaining outer portion of the patch 4b outwardly of the seam 4c is bonded to the envelope cloth by an adhesive.
When the gas pressure in the inflated envelope is below a certain pressure, the patch 4b remains substantially intact, the state shown in FIG. 4A, even if it expands. When the gas pressure exceeds the predetermined pressure, shearing stress develops between the sewing threads 4c and the patch 4b, which is distended by the gas pressure as shown in FIG. 4B, so that deviation of threads, that is, opening of the cloth, occurs in the patch cloth 4b. The resin coat film 4b-2 is broken and the gas leaks out through the ruptures in the film. The opening up of the cloth becomes greater with a higher gas pressure, and the greater area of the openings allows greater rates of gas leakage.
The overall operation of the embodiment is as follows. When the car impinges accidentally against anything, the sensor senses the collision, and the inflator 2 generates and supplies the gas into the folded air bag envelope 1 through its opening 2a, thereby inflating the air bag envelope 1. Assuming that the ambient temperature is low, such as in winter, for example, the pressure of the generated gas is relatively low, for example, below 0.7 kg/cm2. Then, the patch 4b of the pressure regulation seam portion 4 remains intact (FIG. 4A) and, hence, the gas does not leak. When the external temperature is high, such as in summer, however, the pressure of the gas becomes relatively greater, and if it is above 0.7 kg/cm2, for example, the patch 4b is deformed and opened up by the gas pressure, and the resin coat film 4b-2 is ruptured. The degree of deformation and opening up of the cloth increases with an increasing gas pressure so that the quantity of the leaking gas becomes greater and the inner pressure can be kept constant. In this manner, the inner pressure can be regulated to a predetermined level, even when the generated gas pressure is high, and if the driver hits the bag under this state, the energy can be absorbed and the driver is not repelled back.
Though the embodiment described above illustrates the case where vent holes are made in small regions of the envelope fabric, it is also possible to employ the structure shown in FIGS. 5 and 6. A cloth piece 5 having a resin coat film 4b on a plain woven fabric 5a and a cloth piece 6 having a resin coat film 6b on a plain woven fabric 6a are sewn together to form a portion of a bulbous envelope. The piece 6 has an opening 6c, and a cloth 7 piece having a resin coat film 6b on a plain woven fabric 7a is sewn by a thread to form a seam 4' along the respective overlapping margins of the pieces 6 and 7. An opening 7c is formed at the center of the piece 7, and bolts are inserted into bolt holes 7d around the periphery of the opening 7c so that the inflator 2 can be fitted, as shown in FIG. 4(a).
In this construction when the inflator 2 generates the gas and the envelope inflates, the seam 4' under the intact state where the gas pressure is low and the gas does not leak, as shown in FIG. 6A, changes when the gas pressure is high to the state where shearing stress develops between the piece 6 and the piece 7 due to the high gas pressure, as shown in FIG. 6B, so that the threads oriented at right angles to the stretching direction of the respective fabrics 6a and 7a on one side, with the stitching threads 8 being the boundary, are pushed while the .[.treads.]. .Iadd.threads .Iaddend.on the other side are stretched and the resin coat films 6b and 7b are broken. This breakage occurs on the mutually opposite sides of the pieces 6 and 7, and the gas leaks through the open fabrics on the stretched sides, thereby keeping the gas pressure constant.
In summary, as described above, in accordance with the present invention, the stitched thread seams between portions of the envelope cause the fabrics to open up and the coatings to break to degrees that are variable in accordance with the gas pressure above a predetermined gas pressure. The intrusion of the threads of the stitched seams between threads of the fabrics in the overlapping margins of portions of the envelope inhibits normal stretching of the fabrics and creates localized high stresses, which is what causes the fabrics to distend and open up along the seams and produces ruptures in the film coatings. The greater the internal gas pressure, the greater the stresses and the consequent ruptures of the film. Accordingly, gas is released in increasing amounts, the greater the pressure, and the overall gas pressure can be kept constant. Therefore, even though ambient temperature changes, such as in summer and winter, cause the generated gas pressure of the inflator to change, the gas leakage is reduced when the generated gas pressure is low, thereby to prevent the drop of the internal pressure, and is increased when the generated gas pressure is high, thereby to prevent the inner pressure from being excessive. In this manner, the performance of the air bag in protecting the driver can be kept at a sufficient level, irrespective of differences in the ambient temperatures.
In the conventional pressure regulators of air bags, wherein a resin film is disposed on the vent hole, the film is broken substantially uniformly if the pressure is above a predetermined pressure, and the gas is often released from the envelope unnecessarily. In comparison with the conventional devices of this type, the present device can utilize the gas pressure more efficiently, so that the inflator can be made more compact, and a great advantage can be obtained in connection with the amount of space required for the inflator.
Claims (5)
1. In a vehicle safety air bag having an inflatable envelope of fabric coated with a polymeric film to make it gas tight and pressure-relief means associated with the envelope for enabling gas to escape from the envelope when the gas pressure exceeds a predetermined level, the improvement wherein the pressure relief means comprises first and second fabric elements of the envelope disposed in overlapping relation along their respective margins and a stitched thread seam along said overlapping margins adapted to induce opening up of the fabric elements and rupture of the films thereof along the seam to degrees that vary in accordance with the level of gas pressure in the envelope above said predetermined level and to allow gas to escape along the opened up seam.
2. The improvement claimed in claim 1 wherein said one element of the envelope is a main body having a hole and the second element is a patch covering the hole.
3. The improvement claimed in claim 1 wherein the first element is a major part of the envelope that includes its perimeter and the second element is a minor part within the perimeter, whereby the seam is subject to shear stresses due to gas pressure.
4. The improvement claimed in claim 1 wherein the first and second elements are also adhesively joined along said margins. .Iadd.5. In a vehicle safety air bag having an envelope of fabric coated with a polymeric film to make it gas tight and inflatable by pressurized gas from an inflator, the improvement wherein the envelope includes at least one fabric element consisting of a woven fabric and a lining film coating of silicone rubber
on the inner surface of the woven fabric. .Iaddend. .Iadd.6. The improvement according to claim 5 wherein all fabric elements of the envelope consist of a woven fabric and a lining film coating of silicone rubber on the inner surface of the woven fabric. .Iaddend.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1986128870U JPH0644759Y2 (en) | 1986-08-26 | 1986-08-26 | Airbag pressure regulator |
JP61-128870[U] | 1986-08-26 |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/089,581 Reissue US4805930A (en) | 1986-08-26 | 1987-08-26 | Pressure regulation device for vehicle safety air bag |
Publications (1)
Publication Number | Publication Date |
---|---|
USRE34204E true USRE34204E (en) | 1993-03-30 |
Family
ID=14995397
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/089,581 Ceased US4805930A (en) | 1986-08-26 | 1987-08-26 | Pressure regulation device for vehicle safety air bag |
US07/658,760 Expired - Lifetime USRE34204E (en) | 1986-08-26 | 1991-02-20 | Pressure regulation device for vehicle safety air bag |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/089,581 Ceased US4805930A (en) | 1986-08-26 | 1987-08-26 | Pressure regulation device for vehicle safety air bag |
Country Status (2)
Country | Link |
---|---|
US (2) | US4805930A (en) |
JP (1) | JPH0644759Y2 (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5407728A (en) * | 1992-01-30 | 1995-04-18 | Reeves Brothers, Inc. | Fabric containing graft polymer thereon |
US5486210A (en) * | 1992-01-30 | 1996-01-23 | Reeves Brothers, Inc. | Air bag fabric containing graft polymer thereon |
US5492363A (en) * | 1994-09-07 | 1996-02-20 | Takata, Inc. | Flow regulating air bag valve |
US5556128A (en) * | 1994-11-24 | 1996-09-17 | Volkswagen Ag | Safety arrangement for a vehicle occupant |
US5577765A (en) * | 1994-09-06 | 1996-11-26 | Takata Corporation | Air bag device |
US5743558A (en) * | 1997-02-11 | 1998-04-28 | Takata, Inc. | Air cushion module with rotating vent ring |
US6189915B1 (en) | 1999-01-13 | 2001-02-20 | Autoliv Asp, Inc. | Airbag cushion attachment |
US6520522B2 (en) * | 2000-02-24 | 2003-02-18 | Trw Occupant Restraint Systems Gmbh & Co. Kg | Side impact protection device |
US20040056459A1 (en) * | 2002-09-19 | 2004-03-25 | Kassman Mark E. | Method and apparatus for air bag venting |
US20060197328A1 (en) * | 2005-03-04 | 2006-09-07 | Takata Restraint Systems, Inc. | Expandable airbag cushion assembly |
Families Citing this family (88)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE8800530U1 (en) * | 1988-01-19 | 1988-02-25 | Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart | Impact protection device for the occupants of a vehicle |
US5076975A (en) * | 1988-06-28 | 1991-12-31 | Uniroyal Plastics Company, Inc. | Production of radiation cured elastomer coated passive restraint device |
US4994225A (en) * | 1988-06-28 | 1991-02-19 | Uniroyal Plastics Company, Inc. | Production of passive restraint device |
US4988119A (en) * | 1988-10-14 | 1991-01-29 | Irvin Automotive Products, Inc. | Vehicle occupant restraint system |
WO1990009908A1 (en) * | 1989-02-23 | 1990-09-07 | Automotive Technologies International, Inc. | Inflatable air bag with pressure control valve |
US5046759A (en) * | 1989-04-07 | 1991-09-10 | Uniroyal Plastics Co., Inc. | Braided fabric structure for seamless fabric confinements |
JP2961233B2 (en) * | 1989-06-15 | 1999-10-12 | エアバックス インターナショナル リミティド | Bag airbag with special gas exhaust area |
JP2783849B2 (en) * | 1989-07-14 | 1998-08-06 | タカタ株式会社 | Airbag in airbag device |
FR2652322B1 (en) * | 1989-09-27 | 1991-11-22 | Livbag Snc | SHOCK ABSORBING DEVICE FOR OCCUPANTS OF A MOTOR VEHICLE AND USE OF THIS DEVICE. |
US5007662A (en) * | 1989-10-16 | 1991-04-16 | Ford Motor Company | Air bag relief valve |
JPH06104438B2 (en) * | 1989-11-16 | 1994-12-21 | 池田物産株式会社 | Airbag device |
JPH03186448A (en) * | 1989-12-15 | 1991-08-14 | Takata Kk | Air bag for passenger |
JPH03208745A (en) * | 1990-01-10 | 1991-09-11 | Nissan Motor Co Ltd | Air bag device of automobile |
JP2513585Y2 (en) * | 1990-05-28 | 1996-10-09 | 日本精工株式会社 | Airbag |
DE4028637A1 (en) * | 1990-09-08 | 1992-03-12 | Akzo Gmbh | Vehicle air bag fabric - is partially coated to give air impermeable zones in pattern to cover cutting and stitching lines |
DE4101287A1 (en) * | 1991-01-17 | 1992-07-30 | Trw Repa Gmbh | INFLATABLE GAS BAG FOR A RESTRAINT SYSTEM IN VEHICLES |
JPH04109662U (en) * | 1991-03-08 | 1992-09-22 | 株式会社東海理化電機製作所 | Bag body for air bag equipment |
US5863068A (en) * | 1994-05-23 | 1999-01-26 | Automotive Technologies International, Inc. | Plastic film airbag |
US5746446A (en) * | 1994-05-23 | 1998-05-05 | Automotive Technologies International, Inc. | Plastic film airbag |
US6149194A (en) * | 1994-05-23 | 2000-11-21 | Automotive Technologies International, Inc. | Plastic film airbag |
US6250668B1 (en) | 1994-05-23 | 2001-06-26 | Automotive Technologies International, Inc. | Tubular airbag, method of making the same and occupant protection system including the same |
US6715790B2 (en) | 1994-05-23 | 2004-04-06 | Automotive Technologies International, Inc. | Side curtain air bag |
DE4126527A1 (en) * | 1991-08-10 | 1993-02-25 | Diehl Gmbh & Co | GAS GENERATOR FOR AN AIRBAG |
WO1993017894A1 (en) * | 1992-03-13 | 1993-09-16 | Haley Jeffrey T | Inflatable airbag on personal aircraft |
DE4223775C1 (en) * | 1992-07-18 | 1993-06-24 | Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De | |
DE4229564C1 (en) * | 1992-09-04 | 1993-08-26 | Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De | |
US5246250A (en) * | 1992-11-25 | 1993-09-21 | General Motors Corporation | Air bag valve assembly |
US5332259A (en) * | 1993-01-19 | 1994-07-26 | General Motors Corporation | Vent control device for air bag housing |
US5378019A (en) * | 1993-03-11 | 1995-01-03 | Morton International, Inc. | Controlled deployment driver's side air bag |
US5395134A (en) * | 1993-04-02 | 1995-03-07 | Morton International, Inc. | Passenger side air bag with controlled deployment |
US5478111A (en) * | 1993-08-11 | 1995-12-26 | Morton International, Inc. | Dynamic burn vents for the cushion of an air bag module |
US5398967A (en) * | 1993-08-18 | 1995-03-21 | Precision Engineering Co. | Air bag inflator |
US5839755A (en) * | 1994-03-03 | 1998-11-24 | Trw Vehicle Safety Systems Inc. | Method and apparatus for restraining a vehicle occupant |
JP3083457B2 (en) | 1994-09-16 | 2000-09-04 | タカタ株式会社 | Base fabric for airbag and manufacturing method thereof |
US5536038A (en) * | 1995-02-01 | 1996-07-16 | Trw Vehicle Safety Systems Inc. | Side impact inflatable restraint with vent openings |
DE19517315C2 (en) * | 1995-05-04 | 2003-04-17 | Takata Petri Ag | airbag |
US5634659A (en) * | 1995-08-03 | 1997-06-03 | Trw Vehicle Safety Systems Inc. | Air bag with a vent |
US5630615A (en) * | 1995-12-11 | 1997-05-20 | General Motors Corporation | Side impact supplemental inflation restraint |
US5626358A (en) * | 1996-01-11 | 1997-05-06 | Morton International, Inc. | Airbag cushion assembly with horn switch pocket |
US5603526A (en) | 1996-01-16 | 1997-02-18 | Morton International, Inc. | Pressure vent for air bag cushion |
US6065773A (en) * | 1996-01-19 | 2000-05-23 | Klinger; Barney | Gas pressure restraint, sensing and release systems |
US5718450A (en) * | 1996-01-19 | 1998-02-17 | Takata, Inc. | Inflatable restraint system having a head/thorax cushion for side impact protection |
US5803495A (en) * | 1996-04-22 | 1998-09-08 | Autoliv Asp, Inc. | Variable volume airbag cushion |
BR9709762A (en) | 1996-05-22 | 1999-08-10 | Simula Inc | Inflatable tubular shock |
JP3685872B2 (en) * | 1996-06-11 | 2005-08-24 | 本田技研工業株式会社 | Pressure adjusting device for air bag in motorcycle |
CA2259373A1 (en) * | 1996-06-28 | 1998-01-08 | Kenneth W. Gwinn | Airbag with non-circular vent hole |
US5839753A (en) * | 1997-03-31 | 1998-11-24 | Simula Inc. | Inflatable tubular torso restraint system |
US5704639A (en) * | 1996-07-09 | 1998-01-06 | Breed Automotive Technology, Inc. | Pressure sensitive airbag vent mechanism |
US5725244A (en) * | 1996-07-09 | 1998-03-10 | Breed Automotive Technology, Inc. | Airbag venting mechanism |
DE29612500U1 (en) * | 1996-07-18 | 1996-11-14 | Trw Repa Gmbh | Airbag for a vehicle occupant restraint system |
US6126194A (en) * | 1997-03-31 | 2000-10-03 | Simula, Inc. | Inflatable tubular torso restraint system |
US6336656B1 (en) | 1997-03-31 | 2002-01-08 | Simula, Inc. | Inflatable tubular torso restraint system with pivoting upper anchor point attachment |
FR2750940A1 (en) | 1997-07-08 | 1998-01-16 | Breed Automotive Tech | Pressure sensitive airbag vent mechanism used in vehicle occupant protection systems |
FR2766142B1 (en) * | 1997-07-18 | 1999-10-01 | Aerazur | INFLATABLE SAFETY BAG WITH VENT HOLE BLIND MEMBRANE |
GB2328649A (en) * | 1997-08-27 | 1999-03-03 | Alliedsignal Deutschland Gmbh | An airbag having a rupturable vent |
US6017057A (en) * | 1998-03-13 | 2000-01-25 | Trw Inc. | Inflatable vehicle occupant protection device |
US5851029A (en) * | 1998-03-24 | 1998-12-22 | Barney Klinger | Gas pressure restraint, sensing and release systems |
DE29813081U1 (en) | 1998-07-22 | 1998-11-19 | Trw Repa Gmbh | Airbag with relief opening |
JP2000043674A (en) * | 1998-07-29 | 2000-02-15 | Honda Motor Co Ltd | Airbag system |
EP1022198A1 (en) | 1999-01-20 | 2000-07-26 | Aerazur | Airbag comprising a membrane obturating the vent hole |
US6447006B1 (en) | 2000-10-03 | 2002-09-10 | Autoliv Asp, Inc. | Inflatable curtain cushion vent |
US6517108B1 (en) * | 2002-01-02 | 2003-02-11 | Ford Global Technologies, Inc. | Pyrotechnic air bag stitch vent |
US6736425B2 (en) | 2002-01-28 | 2004-05-18 | Ford Global Technologies, Llc | System for venting an air bag module |
US6802528B2 (en) | 2002-04-05 | 2004-10-12 | Ford Global Technologies, Llc | Air bag cushion energy diverter |
US6746045B2 (en) | 2002-04-05 | 2004-06-08 | Ford Global Technologies, Llc | Air bag inflator gas venting system |
US6726242B2 (en) | 2002-04-27 | 2004-04-27 | Tk Holdings, Inc. | Integral airbag exhaust vent |
JP4062137B2 (en) * | 2003-03-17 | 2008-03-19 | タカタ株式会社 | Air bag and air bag device |
GB2400355B (en) * | 2003-04-10 | 2006-05-24 | Autoliv Dev | Improvements in or relating to an air-bag |
DE10320120A1 (en) * | 2003-05-06 | 2004-12-09 | Johann Berger | Inflatable woven air bag or air belt |
JP4290501B2 (en) * | 2003-08-07 | 2009-07-08 | タカタ株式会社 | Airbag device, motorcycle with airbag device |
JP4815156B2 (en) * | 2005-06-15 | 2011-11-16 | 本田技研工業株式会社 | Airbag device |
DE112007002425A5 (en) * | 2006-08-09 | 2009-07-16 | Takata-Petri Ag | Airbag for a steering wheel with ventilation openings |
DE202007006023U1 (en) | 2007-04-19 | 2007-07-26 | Takata-Petri Ag | Gas bag arrangement e.g. for vehicle occupant restraint system, has gas bag which has inflatable chamber and opening with cover provided for opening of gas bag and partly covers second opening |
US8262130B2 (en) * | 2007-07-30 | 2012-09-11 | Trw Vehicle Safety Systems Inc. | Air bag with improved tear stitch |
US8544883B2 (en) * | 2007-06-21 | 2013-10-01 | Trw Vehicle Safety Systems Inc. | Tear stitching for inflatable vehicle occupant protection devices |
US7954850B2 (en) * | 2007-06-21 | 2011-06-07 | Trw Vehicle Safety Systems Inc. | Air bag with adaptive venting |
IL190214A0 (en) * | 2008-03-17 | 2009-05-04 | Rafael Advanced Defense Sys | Airbag system with improved performance for a wide range of loads |
DE102009005696A1 (en) * | 2009-01-19 | 2009-10-08 | Takata-Petri Ag | Vehicle occupant restraint system, has auxiliary seam formed in interrupted area of outlet opening to partially close opening, where seam opens opening upon reaching preset inner pressure or temperature of gasbag during inflation process |
DE102009018159A1 (en) * | 2009-04-21 | 2010-11-04 | Autoliv Development Ab | Airbag module with an adaptive ventilation opening having gas bag |
WO2011092923A1 (en) * | 2010-01-28 | 2011-08-04 | 本田技研工業株式会社 | Airbag |
DE102010007879A1 (en) * | 2010-02-13 | 2011-08-18 | Daimler AG, 70327 | Airbag and method for producing such an airbag |
US8328233B2 (en) * | 2011-03-31 | 2012-12-11 | Ford Global Technologies, Llc | Active bolster with active venting |
US8454054B1 (en) | 2012-09-10 | 2013-06-04 | Ford Global Technologies, Llc | Active bolster with vented hermetic seal |
US8882143B2 (en) * | 2013-02-08 | 2014-11-11 | Autoliv Asp, Inc. | Airbag with slit vent |
US10093270B2 (en) | 2016-01-13 | 2018-10-09 | Autoliv Asp, Inc. | Multi-flap vents for inflatable chambers |
US10759376B2 (en) * | 2018-08-06 | 2020-09-01 | Ford Global Technologies, Llc | Vehicle airbag |
JPWO2021002433A1 (en) * | 2019-07-04 | 2021-01-07 | ||
US11292423B2 (en) | 2020-05-18 | 2022-04-05 | Autoliv Asp, Inc. | Vent flap for airbag assemblies |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3527475A (en) * | 1969-03-07 | 1970-09-08 | Eaton Yale & Towne | Vehicle safety system |
US3573885A (en) * | 1968-12-18 | 1971-04-06 | Eaton Yale & Towne | Vehicle safety apparatus for restraining occupant |
US3600003A (en) * | 1969-03-19 | 1971-08-17 | Eaton Yale & Towne | Vehicle safety system |
US3887213A (en) * | 1973-02-28 | 1975-06-03 | Eaton Corp | Inflatable vehicle occupant restraint and system therefor |
US3892425A (en) * | 1971-12-23 | 1975-07-01 | Gumze Ltd | Air bag |
US3900210A (en) * | 1970-10-23 | 1975-08-19 | Allied Chem | Energy absorption arrangement in vehicle passenger restraint system |
US3907327A (en) * | 1972-01-19 | 1975-09-23 | Poudres & Explosifs Ste Nale | Safety device with an inflatable cushion which provides effective protection during successive collisions |
US4097065A (en) * | 1975-10-09 | 1978-06-27 | Honda Giken Kogyo Kabushiki Kaisha | Safety air cushion bag in automotive vehicles |
US4213634A (en) * | 1978-02-06 | 1980-07-22 | Toyota Jidosha Kogyo Kabushiki Kaisha | Construction of stitching portions of gas bags |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5073339A (en) * | 1973-11-02 | 1975-06-17 |
-
1986
- 1986-08-26 JP JP1986128870U patent/JPH0644759Y2/en not_active Expired - Lifetime
-
1987
- 1987-08-26 US US07/089,581 patent/US4805930A/en not_active Ceased
-
1991
- 1991-02-20 US US07/658,760 patent/USRE34204E/en not_active Expired - Lifetime
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3573885A (en) * | 1968-12-18 | 1971-04-06 | Eaton Yale & Towne | Vehicle safety apparatus for restraining occupant |
US3527475A (en) * | 1969-03-07 | 1970-09-08 | Eaton Yale & Towne | Vehicle safety system |
US3600003A (en) * | 1969-03-19 | 1971-08-17 | Eaton Yale & Towne | Vehicle safety system |
US3900210A (en) * | 1970-10-23 | 1975-08-19 | Allied Chem | Energy absorption arrangement in vehicle passenger restraint system |
US3892425A (en) * | 1971-12-23 | 1975-07-01 | Gumze Ltd | Air bag |
US3907327A (en) * | 1972-01-19 | 1975-09-23 | Poudres & Explosifs Ste Nale | Safety device with an inflatable cushion which provides effective protection during successive collisions |
US3887213A (en) * | 1973-02-28 | 1975-06-03 | Eaton Corp | Inflatable vehicle occupant restraint and system therefor |
US4097065A (en) * | 1975-10-09 | 1978-06-27 | Honda Giken Kogyo Kabushiki Kaisha | Safety air cushion bag in automotive vehicles |
US4213634A (en) * | 1978-02-06 | 1980-07-22 | Toyota Jidosha Kogyo Kabushiki Kaisha | Construction of stitching portions of gas bags |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5407728A (en) * | 1992-01-30 | 1995-04-18 | Reeves Brothers, Inc. | Fabric containing graft polymer thereon |
US5486210A (en) * | 1992-01-30 | 1996-01-23 | Reeves Brothers, Inc. | Air bag fabric containing graft polymer thereon |
US5577765A (en) * | 1994-09-06 | 1996-11-26 | Takata Corporation | Air bag device |
US5492363A (en) * | 1994-09-07 | 1996-02-20 | Takata, Inc. | Flow regulating air bag valve |
US5556128A (en) * | 1994-11-24 | 1996-09-17 | Volkswagen Ag | Safety arrangement for a vehicle occupant |
US5743558A (en) * | 1997-02-11 | 1998-04-28 | Takata, Inc. | Air cushion module with rotating vent ring |
US6189915B1 (en) | 1999-01-13 | 2001-02-20 | Autoliv Asp, Inc. | Airbag cushion attachment |
US6520522B2 (en) * | 2000-02-24 | 2003-02-18 | Trw Occupant Restraint Systems Gmbh & Co. Kg | Side impact protection device |
US20040056459A1 (en) * | 2002-09-19 | 2004-03-25 | Kassman Mark E. | Method and apparatus for air bag venting |
US6945559B2 (en) * | 2002-09-19 | 2005-09-20 | Delphi Technologies, Inc. | Method and apparatus for air bag venting |
US20060197328A1 (en) * | 2005-03-04 | 2006-09-07 | Takata Restraint Systems, Inc. | Expandable airbag cushion assembly |
Also Published As
Publication number | Publication date |
---|---|
US4805930A (en) | 1989-02-21 |
JPS6334752U (en) | 1988-03-05 |
JPH0644759Y2 (en) | 1994-11-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
USRE34204E (en) | Pressure regulation device for vehicle safety air bag | |
US5240283A (en) | Air bag type occupant protector | |
US5704639A (en) | Pressure sensitive airbag vent mechanism | |
US5725244A (en) | Airbag venting mechanism | |
US5603526A (en) | Pressure vent for air bag cushion | |
US3573885A (en) | Vehicle safety apparatus for restraining occupant | |
US3527475A (en) | Vehicle safety system | |
US5064218A (en) | Air cushion restraint device having reinforced inflation attachment | |
US3990726A (en) | Inflatable and semi-crushable safety bag for vehicle passenger | |
US5997037A (en) | Air bag with tether | |
US6092836A (en) | Device and method for occupant protection in vehicles | |
US8262130B2 (en) | Air bag with improved tear stitch | |
JP4943155B2 (en) | Improvements in or related to inflatable airbags | |
EP0962363B1 (en) | Airbag | |
US7874584B2 (en) | Sealing patch for the ventilation hole of a non-siliconized cushion of an airbag module | |
KR950005651A (en) | Air bag inflation module assembly, burstable retaining flap and air bag assembly method | |
WO1990001436A1 (en) | Air bag | |
JPH07329694A (en) | Internal pressure adjusting device for air bag | |
US5538279A (en) | Collision-protection device for vehicle passengers | |
JPH02279442A (en) | Air bag | |
EP1314615A1 (en) | Airbag with a variable thickness sealing patch for sealing the gas vent hole | |
JPH07329695A (en) | Internal pressure adjusting device for air bag | |
JPH07110598B2 (en) | Air bag | |
JPH056206Y2 (en) | ||
GB2328649A (en) | An airbag having a rupturable vent |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
FPAY | Fee payment |
Year of fee payment: 8 |
|
FPAY | Fee payment |
Year of fee payment: 12 |