US5765866A
Expired / Lapsed
US
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Airbag inflator employing gas generating compositions containing mica
Assignee: Breed Automotive Technology Inc
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Filing: 1997-02-19
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Granted: 1998-06-16
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Expires: 2017-02-19
Abstract
Abstract An airbag inflators employ gas generating compositions formed from a fuel, one or more oxidizers and mica. The gas generant composition employed in the airbag inflators yields solid combustion products and inflating gases having a reduced content of undesirable gases such as NO x and CO.
Inventors
- 👤 J B Canterberry
- 👤 Samuel Steven Schlueter
- 👤 John Herman Adams
- 👤 Robert Keith Walsh
- 👤 Dennis Alvin Trevillyan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:55
CPC Classifications
B; B60; B60R; B60R21/00; B60R21/02; B60R21/16; B60R21/26; B60R21/264; B60R21/2644; C; C06; C06B; C06B23/00; C06B23/001; C06D; C06D5/00; C06D5/06
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
38 words
An airbag inflator comprising: (a) a metal housing; (b) a gas generant comprising greater than 5 and less than 25 wt. % of mica; and (c) combustion ports wherein said ports are sealed with a stainless steel foil.
Claim 2
Dependent Claim
38 words
An airbag inflator comprising: (a) a metal housing; (b) a gas generant comprising greater than 5 and less than 25 wt. % of mica; and (c) combustion ports wherein said ports are sealed with a stainless steel foil.
Claim 3
Dependent Claim
35 words
The airbag inflator of claim 1 wherein said stainless steel foil is of a thickness of 0.01 to 0.20 mm, said foil further characterized by an adhesive on at least one surface of said foil.
Claim 4
Dependent Claim
27 words
The airbag inflator of claim 1 wherein said gas generant further comprises: (a) 15-70 wt. % of a fuel; and (b) 2-80 wt. % of an oxidizer.
Claim 5
Dependent Claim
47 words
The airbag inflator of claim 3 wherein the fuel is selected from alkali metal azides, alkaline earth metal azides, aminotetrazoles, and the metal salts thereof, tetrazoles and the metal salts thereof, bitetrazoles and the metal salts thereof, triazoles and the metal salts thereof, nitrates and mixtures thereof.
Claim 6
Dependent Claim
33 words
The airbag inflator of claim 3 wherein the oxidizer is selected from transition metal oxides; alkali metal nitrates, chlorates and perchlorates; alkaline earth metal nitrates, chlorates and perchlorates; ammonium nitrate; and mixtures thereof.
Claim 7
Dependent Claim
20 words
The airbag inflator of claim 3 wherein said fuel comprises 5-aminotetrazole and said oxidizer comprises potassium nitrate and strontium nitrate.
Claim 8
Dependent Claim
37 words
The airbag inflator of claim 6 wherein said fuel is 30-35 wt. % of said generant, said potassium nitrate is 5-10 wt. % of said generant and said strontium nitrate is 40-50 wt. % of said generant.
Claim 9
Dependent Claim
17 words
The airbag inflator of claim 3 wherein said mica is about 10-20 wt. % of said generant.
Claim 10
Dependent Claim
84 words
An airbag inflator comprising: (a) a metal housing; (b) a knitted wire filter; (c) a stainless steel burst foil having a thickness of 0.01 to 0.20; and (d) a gas generant comprising: (i) 20-40 wt. % of a fuiel selected from tetrazoles, triazoles and mixtures thereof; (ii) 20-80 wt. % of an oxidizer selected from transition metal oxides; alkali and alkaline earth metal nitrates, chlorates and perchlorates; ammonium nitrate; and mixtures thereof; and (iii) greater than 5 and less than 25 wt. % mica.
Claim 11
Dependent Claim
84 words
An airbag inflator comprising: (a) a metal housing; (b) a knitted wire filter; (c) a stainless steel burst foil having a thickness of 0.01 to 0.20; and (d) a gas generant comprising: (i) 20-40 wt. % of a fuiel selected from tetrazoles, triazoles and mixtures thereof; (ii) 20-80 wt. % of an oxidizer selected from transition metal oxides; alkali and alkaline earth metal nitrates, chlorates and perchlorates; ammonium nitrate; and mixtures thereof; and (iii) greater than 5 and less than 25 wt. % mica.
Claim 12
Dependent Claim
16 words
The airbag inflator of claim 9 wherein said gas generant comprises about 10-20 wt. % mica.
Claim 13
Dependent Claim
71 words
An airbag inflator comprising: (a) a metal housing; (b) a knitted wire filter; and (c) a gas generant comprising (i) 20-40 wt. % of a fuel selected from tetrazoles, triazoles and mixtures thereof; (ii) 20-80 wt. % of an oxidizer selected from transition metal oxides; alkali and alkaline earth metal nitrates, chlorates and perchlorates; ammonium nitrate; and mixtures thereof; and (iii) greater than 5 and less than 25 wt. % mica.
Claim 14
Dependent Claim
71 words
An airbag inflator comprising: (a) a metal housing; (b) a knitted wire filter; and (c) a gas generant comprising (i) 20-40 wt. % of a fuel selected from tetrazoles, triazoles and mixtures thereof; (ii) 20-80 wt. % of an oxidizer selected from transition metal oxides; alkali and alkaline earth metal nitrates, chlorates and perchlorates; ammonium nitrate; and mixtures thereof; and (iii) greater than 5 and less than 25 wt. % mica.
Claim 15
Dependent Claim
16 words
An airbag inflator according to claim 11 wherein said gas generant comprises 10-20 wt. % mica.
Claim 16
Dependent Claim
40 words
An airbag inflator according to claim 11 wherein said fuel is 30-35 wt. % of said generant and said oxidizer is a mixture of potassium nitrate at 5-10 wt. % and strontium nitrate at 40-50 wt. % of said generant.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2001-06-15 | 2001-12-15 | 2002-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-06-15 | 2005-12-15 | 2006-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-06-15 | 2009-12-15 | 2010-06-16 | $7700.00 | Window Closed / Lapsed |