US5094475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas generator
Assignee: General Engineering (Netherlands) BV
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Filing: 1989-11-24
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Granted: 1992-03-10
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Expires: 2009-11-24
Abstract
Abstract Inflatable air-bag for use in a motor vehicle has a gas generator unit which includes at least one charge of cellulose nitrate having a mass of less than 10 grams. Gas from the charge, when ignited, is directed to the interior of the air-bag by a tube having a number of holes positioned along the length of the tube providing communication between the center of the tube and the air-bag. The tube is provided with a part of the charge of cellulose nitrate at each end of the tube.
Inventors
- 👤 Jan Olsson
- 👤 Lars-Gunnar Skotte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:10
CPC Classifications
B; B60; B60R; B60R21/00; B60R21/02; B60R21/16; B60R21/26; B60R21/264; B60R21/2644; B60R21/261; C; C06; C06D; C06D5/00; C06D5/06; B60R2021/0002; B60R2021/0006
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
132 words
A safety arrangement in a motor vehicle, said safety arrangement being mounted within the door of the motor vehicle and comprising an inflatable bag means and a gas generator unit for generating gas to inflate the bag means, the gas generator unit comprising an elongate tube having a plurality of holes defined in the tube at positions spaced along the length of the tube, said tube being provided with a charge of ignitable material at each end of the tube, means being provided to ignite the said charges, the charges, when ignited, generating gas which is directed through the interior of the tube and through said holes into the interior of the inflatable bag means, each charge being cellulose nitrate, and the combined mass of the charges being less than 10 grams.
Claim 2
Dependent Claim
132 words
A safety arrangement in a motor vehicle, said safety arrangement being mounted within the door of the motor vehicle and comprising an inflatable bag means and a gas generator unit for generating gas to inflate the bag means, the gas generator unit comprising an elongate tube having a plurality of holes defined in the tube at positions spaced along the length of the tube, said tube being provided with a charge of ignitable material at each end of the tube, means being provided to ignite the said charges, the charges, when ignited, generating gas which is directed through the interior of the tube and through said holes into the interior of the inflatable bag means, each charge being cellulose nitrate, and the combined mass of the charges being less than 10 grams.
Claim 3
Dependent Claim
18 words
A safety arrangement according to claim 1, wherein each charge is ignited by means of an electric igniter.
Claim 4
Dependent Claim
22 words
A safety arrangement according to claim 2, wherein each igniter is surrounded by gun powder which is embedded in the cellulose nitrate.
Claim 5
Dependent Claim
21 words
A safety arrangement according to claim 1, wherein the said holes are spaced apart along the tube in a single line.
Claim 6
Dependent Claim
25 words
A safety arrangement according to claim 4, wherein the axis of at least some of said holes is inclined to the axis of the tube.
Claim 7
Dependent Claim
18 words
A safety arrangement according to claim 4, wherein the number of said apertures is between five and twenty.
Claim 8
Dependent Claim
24 words
A safety arrangement according to claim 4, wherein the total area of said holes is selected to be between 20 and 100 millimeters square.
Claim 9
Dependent Claim
23 words
A safety arrangement according to claim 1, wherein the total mass of the charges of cellulose nitrate is between 1 and 7 grams.
Claim 10
Dependent Claim
94 words
An inflatable safety arrangement comprising an inflatable air-bag and an associated gas generator unit, the gas generator unit comprising an elongate tube, with a number of holes formed at positions spaced along its length, a charge of cellulose nitrate being mounted on the tube and being adapted, when ignited, to generate gas which will flow along inside the tube and through the holes into the interior of the air-bag to be inflated, the charge comprising cellulose nitrate having a mass of between 1 and 7 grams, and means being provided to ignite the charge.
Claim 11
Dependent Claim
94 words
An inflatable safety arrangement comprising an inflatable air-bag and an associated gas generator unit, the gas generator unit comprising an elongate tube, with a number of holes formed at positions spaced along its length, a charge of cellulose nitrate being mounted on the tube and being adapted, when ignited, to generate gas which will flow along inside the tube and through the holes into the interior of the air-bag to be inflated, the charge comprising cellulose nitrate having a mass of between 1 and 7 grams, and means being provided to ignite the charge.
References Cited (Backward Citations)
US3476403A
Cited
US3602526A
Cited
GB1290418A
Cited
US3711115A
Cited
US3813007A
Cited
GB1371506A
Cited
US3778084A
Cited
US3836167A
Cited
US3904221A
Cited
GB1381999A
Cited
US3917023A
Cited
US4878690A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-03-10 | 1995-09-09 | 1996-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-10 | 1999-09-09 | 2000-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-10 | 2003-09-09 | 2004-03-10 | $7700.00 | Window Closed / Lapsed |