Patent US5100170A successfully refreshed from Google Patents.
US5100170A
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US
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Auto-ignition device for an air bag inflator
Assignee: ZF Passive Safety Systems US Inc
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Filing: 1991-01-22
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Granted: 1992-03-31
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Expires: 2011-01-22
Abstract
Abstract An air bag inflator is provided with a new and useful auto-ignition device. The auto-ignition device comprises a thermoelectric battery, preferably located outside of the inflator housing. The thermoelectric battery is adapted to become electrochemically active in a predetermined temperature range (e.g. 300°-400° F.), and to provide an electrical signal which actuates the inflator.
Inventors
- 👤 Joseph J. Mihm
- 👤 Ponget P. Wipasuramonton
- 👤 James M. Kumkoski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:15
CPC Classifications
B; B60; B60R; B60R21/00; B60R21/01; B60R21/017; B60R21/02; B60R21/16; B60R21/26; B60R21/264; B60R21/2644; F; F42; F42B; F42B39/00; F42B39/14; H; H01; H01M; H01M6/00; H01M6/30; H01M6/36; B60R2021/26029
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
112 words
Apparatus comprising: an air bag inflator comprising a housing and gas generant material disposed in said housing, said gas generant material having a predetermined temperature at which said gas generant material will ignite; an initiator engaged with said housing, said initiator being adapted to be actuated by an electrical signal and, upon actuation, to ignite said gas generant; and an auto-ignition sensing device located outside of said housing and said initiator, said auto-ignition sensing device being electrically connected with said initiator and being adapted to actuate said initiator when said auto-ignition sensing device senses a predetermined auto-ignition temperature, said predetermined auto-ignition temperature being less than said ignition temperature of said gas generant.
Claim 2
Dependent Claim
112 words
Apparatus comprising: an air bag inflator comprising a housing and gas generant material disposed in said housing, said gas generant material having a predetermined temperature at which said gas generant material will ignite; an initiator engaged with said housing, said initiator being adapted to be actuated by an electrical signal and, upon actuation, to ignite said gas generant; and an auto-ignition sensing device located outside of said housing and said initiator, said auto-ignition sensing device being electrically connected with said initiator and being adapted to actuate said initiator when said auto-ignition sensing device senses a predetermined auto-ignition temperature, said predetermined auto-ignition temperature being less than said ignition temperature of said gas generant.
Claim 3
Dependent Claim
49 words
Apparatus as set forth in claim i, wherein said initiator includes an element responsive to an electric current for actuating said initiator, and wherein said auto-ignition sensing device comprises a thermoelectric battery adapted to produce an electrical current when said thermoelectric battery is exposed to said predetermined auto-ignition temperature.
Claim 4
Dependent Claim
20 words
Apparatus as set forth in claim 2, wherein said thermoelectric battery is attached to an exterior portion of said housing.
Claim 5
Dependent Claim
17 words
Apparatus as set forth in claim 3, wherein said thermoelectric battery is positioned remote from said housing.
Claim 6
Dependent Claim
16 words
Apparatus as set forth in any of claims 1-4, wherein said housing is made of aluminum.
Claim 7
Dependent Claim
21 words
Apparatus as set forth in any of claims 1-4, wherein said predetermined auto-ignition temperature is in the range of 300°-400° F.
Claim 8
Dependent Claim
141 words
Apparatus comprising: an air bag inflator comprising a housing and a gas generant material disposed in said housing, said gas generant material having a predetermined temperature at which said gas generant material will ignite; an initiator engaged with said housing, said initiator adapted to be actuated by an electrical signal and, upon actuation, to ignite said gas generant, said initiator including an element responsive to an electric current for actuating said initiator; and an auto-ignition sensing device electrically connected with said initiator and being adapted to actuate said initiator when said auto ignition sensing device senses a predetermined auto ignition temperature, said predetermined auto ignition temperature being less than said ignition temperature of said gas generant, said auto-ignition sensing device comprising a thermoelectric battery adapted to produce an electric current when said thermoelectric battery is exposed to said predetermined auto-ignition temperature.
Claim 9
Dependent Claim
141 words
Apparatus comprising: an air bag inflator comprising a housing and a gas generant material disposed in said housing, said gas generant material having a predetermined temperature at which said gas generant material will ignite; an initiator engaged with said housing, said initiator adapted to be actuated by an electrical signal and, upon actuation, to ignite said gas generant, said initiator including an element responsive to an electric current for actuating said initiator; and an auto-ignition sensing device electrically connected with said initiator and being adapted to actuate said initiator when said auto ignition sensing device senses a predetermined auto ignition temperature, said predetermined auto ignition temperature being less than said ignition temperature of said gas generant, said auto-ignition sensing device comprising a thermoelectric battery adapted to produce an electric current when said thermoelectric battery is exposed to said predetermined auto-ignition temperature.
Claim 10
Dependent Claim
14 words
Apparatus as set forth in claim 7, wherein said housing is made of aluminum.
Claim 11
Dependent Claim
20 words
Apparatus as set forth in claim 7, wherein said predetermined auto ignition temperature is in the range of 300°-400° F.
References Cited (Backward Citations)
US2805272A
Cited
US2949594A
Cited
US3048643A
Cited
US3246311A
Cited
US4561675A
Cited
US4806180A
Cited
US4858951A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-03-31 | 1995-09-30 | 1996-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-31 | 1999-09-30 | 2000-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-31 | 2003-09-30 | 2004-03-31 | $7700.00 | Window Closed / Lapsed |