US5997034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air bag made of resin
Assignee: Takata Corp
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Filing: 1995-09-11
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Granted: 1999-12-07
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Expires: 2015-09-11
Abstract
Abstract An air bag is made of thermoplastic urethane resin. The resin has a hardness (Shore scale A) of 88 to 92 measured by JIS K-7311; a tensile strength of 400 kg/cm 2 or more measured by JIS K-7311; a breaking elongation of 400% or more measured by JIS K-7311; a 100% modulus of 70 kg/cm 2 or more measured by JIS K-7311; a 300% modulus of 150 kg/cm 2 or more measured by JIS k-7311; a tearing strength of 75 kg/cm or more measured by JIS K-7311; a pour point of 180° C. to 188° C. measured by Flow Tester; and a melting viscosity of 2.5×10 5 Ps/190° C. to 45×10 5 Ps/190° C. measured by Flow Tester.
Inventors
- 👤 Kinji Hirai
- 👤 Hiroshi Tomita
- 👤 Atsushi Tsuji
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:51
CPC Classifications
B; B60; B60R; B60R21/00; B60R21/02; B60R21/16; B60R21/23; B60R21/235
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
120 words
An air bag made of thermoplastic urethane resin, wherein said thermoplastic urethane resin has a hardness (Shore scale A) of 88 to 92 measured by JIS K-7311, a tensile strength of 400 kg/cm 2 or more measured by JIS K-7311, a breaking elongation of 400% or more measured by JIS K-7311, a 100% modulus of 70 kg/cm 2 or more measured by JIS K-7311, a 300% modulus of 150 kg/cm 2 or more measured by JIS K-7311, a tearing strength of 75 kg/cm or more measured by JIS K-7311 a pour point of 182° C. to 188° C. measured by Flow Tester, and a melting viscosity of 2.5×10 5 Ps/190° C. to 45×10 5 Ps/190° C. measured by Flow Tester.
Claim 2
Dependent Claim
120 words
An air bag made of thermoplastic urethane resin, wherein said thermoplastic urethane resin has a hardness (Shore scale A) of 88 to 92 measured by JIS K-7311, a tensile strength of 400 kg/cm 2 or more measured by JIS K-7311, a breaking elongation of 400% or more measured by JIS K-7311, a 100% modulus of 70 kg/cm 2 or more measured by JIS K-7311, a 300% modulus of 150 kg/cm 2 or more measured by JIS K-7311, a tearing strength of 75 kg/cm or more measured by JIS K-7311 a pour point of 182° C. to 188° C. measured by Flow Tester, and a melting viscosity of 2.5×10 5 Ps/190° C. to 45×10 5 Ps/190° C. measured by Flow Tester.
Claim 3
Dependent Claim
46 words
An air bag according to claim 1, wherein said air bag includes a front panel and a rear panel having an opening adapted to attach an inflator therein, said front and rear panels being made of the thermoplastic urethane resin and fixed together at outer peripheries.
Claim 4
Dependent Claim
43 words
An air bag according to claim 2, wherein said air bag further includes films attached to outer and inner surfaces of the rear panel around the opening, said films being made of polyimide resin having heat resistance higher than the thermoplastic urethane resin.
Claim 5
Dependent Claim
49 words
An air bag according to claim 1, wherein said air bag includes a center panel and side panels fixed to the center panel, said center and side panels defining an opening adapted to attach an inflator therein, said center and side panels being made of the thermoplastic urethane resin.
References Cited (Backward Citations)
GB1168166A
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EP0489320A1
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JPH04266544A
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DE4142884A1
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US5452914A
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US5524926A
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US5505485A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-12-06 | 2003-06-07 | 2003-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-12-06 | 2007-06-07 | 2007-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-12-06 | 2011-06-07 | 2011-12-07 | $7700.00 | Window Closed / Lapsed |