GB2331955A - Welded inflatable impact protection device - Google Patents

Welded inflatable impact protection device Download PDF

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Publication number
GB2331955A
GB2331955A GB9725489A GB9725489A GB2331955A GB 2331955 A GB2331955 A GB 2331955A GB 9725489 A GB9725489 A GB 9725489A GB 9725489 A GB9725489 A GB 9725489A GB 2331955 A GB2331955 A GB 2331955A
Authority
GB
United Kingdom
Prior art keywords
protection device
impact protection
head impact
inflatable head
welded
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.)
Withdrawn
Application number
GB9725489A
Other versions
GB9725489D0 (en
GB2331955A9 (en
Inventor
Christopher Paul Kavanagh
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Publication of GB2331955A9 publication Critical patent/GB2331955A9/en
Application filed by Individual filed Critical Individual
Priority to GB9725489A priority Critical patent/GB2331955A/en
Publication of GB9725489D0 publication Critical patent/GB9725489D0/en
Publication of GB2331955A publication Critical patent/GB2331955A/en
Withdrawn legal-status Critical Current

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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
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/232—Curtain-type airbags deploying mainly in a vertical direction from their top edge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
    • B29C66/7234—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a barrier layer
    • B29C66/72341—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a barrier layer for gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/729—Textile or other fibrous material made from plastics
    • B29C66/7292—Textile or other fibrous material made from plastics coated
    • 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
    • B60R21/235—Inflatable members characterised by their material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/04—Dielectric heating, e.g. high-frequency welding, i.e. radio frequency welding of plastic materials having dielectric properties, e.g. PVC
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/06—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using friction, e.g. spin welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/10—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • 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
    • B60R21/235—Inflatable members characterised by their material
    • B60R2021/23504—Inflatable members characterised by their material characterised by material
    • B60R2021/23509—Fabric
    • B60R2021/23514—Fabric coated fabric
    • 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
    • B60R21/235—Inflatable members characterised by their material
    • B60R2021/23571—Inflatable members characterised by their material characterised by connections between panels
    • B60R2021/2359—Welding

Abstract

An inflatable head impact protection device (airbag), for vehicle occupants is constructed of two or more layers of thermoplastic coated fabrics 10,20 welded together. The preferred welding method used to form the airbag is high/radio frequency welding. The fabric layers 30,40 may be of Polyamide or Polyester and may be coated with a thermoplastic layers 50,60 such as Polyurethane. The welded joint 70 provides a strength bearing and gas tight seam.

Description

1
PATENT SPECIFICATION 2331955
Inflatable Head Impact Protection Device for Occupants of Transportation vehicles Technical Field.
This invention relates to an inflatable head impact protection device for occupants of transportation vehicles and specifically to the textile component of a system.
is Backwound Protection of vehicle occupants from the forces and intrusions produced by impact situations is nowadays afforded by a wide range of means, including but not limited to; safety belts, padded surfaces, deformable seating and fascia structures, inflatable air bags and inflatable tubular structures.
The latter two are devices which have been adopted more and more recently as improved levels of protection are desirable and market and legislative forces have dictated.
The so called'airbag' is characterised hitherto by being a structure of woven textile, enclosing a volume (when in its inflated condition) and having means to attach to a solid structure, means to allow ingress of the inflating medium (normally gas such as nitrogen) and in some cases means to allow a controlled deflation during impact, thereby attenuating loads to acceptable levels and optimising what is known as'ride down' of the particular occupant.
Where 'controlled' deflation is required it is achieved by vents i.e. discrete holes cut in the body of the assembly, by a permeable outer surface itself or even by the characteristics of the gas used to inflate the device, especially it's reduction in pressure due to heat losses. Such'discrete vented'devices are well known and permeable 'vented'devices are disclosed in GB 2 199 261 A & US 5,193,847.
A further variation on such known and practised devices is in the means of constructing togeither two or more surfaces. Originally vulcanisation of uncured rubber was used and now typically sewing is utilised, as described in GB 2 239 433 A or GB 2 242 167 A. Alternatively a means of weaving together two layers directly on the loom, to create a fully enclosed volume is also utilised, as described in WO 89105250.
More recently in response to newly developed legislation, such as additions to FMVSS 201 which include requirements for maximum injury levels when impacting interior surfaces; a new family of protective devices have been developed. These devices have certain specific performance requirements new to this field of engineering
2- including the need to remain inflated for a minimum 5 seconds. This allows the device to provide protection over the expected time duration of a vehicle rollover, for instance.
One such device is an 'inflatable Tubular Structure', this being a protective device in tube form which does not vent itself but remains rigid for a significant period, allowing it to be tensioned across two mount points and provide a restraint effect 5.5 without any support surface behind its immediate load direction. This device, disclosed in US 5,322,322 is characterised by being constructed from a braided textile tube which has certain important extension properties and furthermore by having no 'venting' at all.
This latter mentioned ITS has significant benefits but is also costly to produce, the textile part being a relatively slow manufacturing process and the additional components required, as a result of the textile chosen, being very costly.
Another such device is an Inflatable Curtain as disclosed for instance in WO 95112504 and WO 95121753. Such devices are mounted in a vehicle roof and deployed downwards to cover a substantial part of the side window of a road vehicle and provide impact protection.
Essential Technical Features According to the present invention there is provided an inflatable protective device which is constructed of two or more fabric layers which, in contrast to the conventional vulcanisation, sewing or unitary weaving, are discretely joined together by a welded joint in the desired shape. This provides both the load bearing and gas tightness functions of a joint in one operation.
This invention therefore, is a product which performs as desired in the aforementioned devices whilst being significantly less costly to produce. It has the advantage also of less bulk and stiffness in the seam allowing the device to be packed away in it's stowed condition in a smaller space.
A typical embodiment is shown in fig 1 indicating, in side view a device deployed inside a road vehicle. Referring to the drawing the roof line of a vehicle is indicated as 10. The device 20 has outer form in inflated state of a cut edge of fabric indicated by 30 with attachment points 40 to the vehicle structure. The welded outer volume defining seam is indicated by 60 and internal seams 70 are provided to create a quilting effect. A gas inlet 80 is provided for attachment to an inflating device.
The two fabrics are created of a base substrate, coated with a suitable material.
The fabric consists of normally synthetic yams, for instance Polyamide 4. 6, 6 or 6.6 or Polyester. Yams in a range 105 to 470 decitex are used with fabric constructions ranging from 17 to 80 per centimetre in warp and weft. A person skilled in the art would readily calculate suitable constructions and weave patterns consistent with the technical requirements including the application of coatings to create the gas sealing barrier and welding medium.
3 In the case of the coating a thermoplastic material such as polyurethane would be suitable for high frequency welding of the two or more fabrics. Moreover the coating is also suited to the output of modern inflators which in many cases have lower temperature gases and furthermore will retain it's performance characteristics over the potential range of operating temperatures and humidities.
The sealed joint as shown in figure 2 is made by placing the two layers of fabric together and high frequency welding them. A person skilled in the art will be conversant with such technology but in brief a tool which forms part or all of the seam shape required is placed on the fabrics, laid upon a special table or bed. The tool is then vibrated at high frequency and under pressure to provide energy which creates heat at the fabrics interface, melting the thermoplastic material and forming a bond. Alternatively Hot Air welding may be used. In this case a nozzle between the two fabrics heats the coating and then the fabrics pass through rollers which apply pressure and form the joint.
Examples ( specific).
One embodiment of the Inflatable Head Impact Protection Device is a device made of Polyurethane coated Polyamide ( Nylon) fabric. The two surfaces are welded together under pressure and high frequency vibration to form the sealed joint. Fabric of 235 dTex Pa 6.6 f68 yam with plain weave construction of 29 warp yarns per centimetre and 27.5 weft yarns per centimetre is coated with 45 grammes per square metre of polyurethane compound. Figure 2 shows a cross section of a high frequency welded joint where a seam of 8mm width is made spaced 15mm in from the outer edge in the case of the outside volume defining seam. In this figure 10 and 20 are two coated fabric layers, each comprising the woven substrate, 30 and 40 represented by warp ends and weft yarns, with an adhering coating, 50 and 60. The coating is joined in a homogenous form indicated by 70. In plan, the seam is discontinuous on the outer edge thereby creating a gas inlet. Additional patterns are also welded in the inside of this seem to create additional joints and also to provide attachment points to the hard structure of the vehicle.
Lt

Claims (6)

Claims
1. An inflatable Head Impact Protection Device constructed of two or more layers of fabric provided with a thermoplastic coating and welded together to form a strength bearing and gas tight seam.
2. An inflatable Head Impact Protection Device as disclosed in claim 1 and welded by means of radiofrequency or hot air.
3. An inflatable Head Impact Protection Device as disclosed in claim 1 or 2 and using fabric of Polyurethane coated Polyamide ( Nylon).
4. An inflatable Head Impact Protection Device as disclosed in claim 1 or 2 and using fabric of Polyurethane coated Polyester.
5. An inflatable Head Impact Protection Device as disclosed in any proceeding claim made from a substrate of 235 dTex Pa 6.6 f68 yarn with plain weave construction of 29 warp yarns per centimetre and 27.5 weft yarns per centimetre, coated with 45 grammes per square metre of polyurethane compound.
6. An inflatable Head Impact Protection Device substantially as herein described and ifflustrated in accompanying drawings.
GB9725489A 1997-12-03 1997-12-03 Welded inflatable impact protection device Withdrawn GB2331955A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9725489A GB2331955A (en) 1997-12-03 1997-12-03 Welded inflatable impact protection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9725489A GB2331955A (en) 1997-12-03 1997-12-03 Welded inflatable impact protection device

Publications (3)

Publication Number Publication Date
GB2331955A9 GB2331955A9 (en) 1900-01-01
GB9725489D0 GB9725489D0 (en) 1998-02-04
GB2331955A true GB2331955A (en) 1999-06-09

Family

ID=10822989

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9725489A Withdrawn GB2331955A (en) 1997-12-03 1997-12-03 Welded inflatable impact protection device

Country Status (1)

Country Link
GB (1) GB2331955A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2372237A (en) * 2001-02-16 2002-08-21 Autoliv Dev A substantially gas tight air bag
US6971674B2 (en) * 2001-02-06 2005-12-06 Fov Fabrics Ab Inflatable air-bag and method for manufacturing the same
EP1963143A2 (en) * 2005-12-12 2008-09-03 Highland Industries, Inc. Thermoplastic coated, heat-sealed airbag
ES2317745A1 (en) * 2006-07-06 2009-04-16 Apc Systems Bcn, S.L. Safety helmet. (Machine-translation by Google Translate, not legally binding)
EP2296944A2 (en) * 2008-05-21 2011-03-23 Automotive Technologies International, Inc. Film airbags
US8287685B2 (en) 2006-12-06 2012-10-16 Dow Corning Corporation Airbag and process for its assembly
US8822357B2 (en) 2007-05-21 2014-09-02 Automotive Technologies International, Inc. Film airbags made from ribbons

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997010973A1 (en) * 1995-09-22 1997-03-27 Joseph Rychter Inflatable airbag and a method of manufacturing the same
US5618595A (en) * 1990-12-27 1997-04-08 Bridgestone Corporation Air bag
GB2328650A (en) * 1997-08-27 1999-03-03 Alliedsignal Deutschland Gmbh Welded airbag cushion

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5618595A (en) * 1990-12-27 1997-04-08 Bridgestone Corporation Air bag
WO1997010973A1 (en) * 1995-09-22 1997-03-27 Joseph Rychter Inflatable airbag and a method of manufacturing the same
GB2328650A (en) * 1997-08-27 1999-03-03 Alliedsignal Deutschland Gmbh Welded airbag cushion

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6971674B2 (en) * 2001-02-06 2005-12-06 Fov Fabrics Ab Inflatable air-bag and method for manufacturing the same
GB2372237A (en) * 2001-02-16 2002-08-21 Autoliv Dev A substantially gas tight air bag
GB2372237B (en) * 2001-02-16 2004-07-28 Autoliv Dev Improvements in or relating to an air-bag
EP1963143A2 (en) * 2005-12-12 2008-09-03 Highland Industries, Inc. Thermoplastic coated, heat-sealed airbag
EP1963143A4 (en) * 2005-12-12 2010-07-21 Highland Ind Inc Thermoplastic coated, heat-sealed airbag
US8408595B2 (en) 2005-12-12 2013-04-02 Highland Industries, Inc. Thermoplastic coated, heat-sealed airbag
ES2317745A1 (en) * 2006-07-06 2009-04-16 Apc Systems Bcn, S.L. Safety helmet. (Machine-translation by Google Translate, not legally binding)
US8287685B2 (en) 2006-12-06 2012-10-16 Dow Corning Corporation Airbag and process for its assembly
US8822357B2 (en) 2007-05-21 2014-09-02 Automotive Technologies International, Inc. Film airbags made from ribbons
USRE46533E1 (en) 2007-05-21 2017-09-05 Automotive Technologies International, Inc. Film airbags
EP2296944A2 (en) * 2008-05-21 2011-03-23 Automotive Technologies International, Inc. Film airbags
EP2296944A4 (en) * 2008-05-21 2013-02-13 Automotive Tech Int Film airbags

Also Published As

Publication number Publication date
GB9725489D0 (en) 1998-02-04
GB2331955A9 (en) 1900-01-01

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