US5482579A
Expired / Lapsed
US
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Gas generator compositions
Assignee: NOF Corp
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Filing: 1994-04-14
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Granted: 1996-01-09
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Expires: 2014-04-14
Abstract
Abstract A gas generator composition, primarily containing perchlorate and cellulose acetate is provided to generate a large amount of gas without forming any substantial amount of harmful carbon monoxide. A metal oxide is additionally incorporated in an amount of more than 5% by weight and not more than 40% by weight. For example, 50 to 87% by weight of potassium perchlorate and 8 to 26% by weight of cellulose acetate are incorporated in the composition. The gas generator composition contains 36% by weight or less of bitetrazole metal hydrate, preferably bitetrazole manganese dihydrate, since it forms no corrosive residue after burning. The composition contains a nonmetallic compound consisting at least of nitrogen and hydrogen and containing at least 11% by weight of nitrogen. As such compound, nitroguanidine, guanidine nitrate, etc. is employed. The compounds preferably contains 10 to 83% by weight of nitrogen. The compound is preferably incorporated in an amount of 10 to 45% by weight. The gas generator composition is molded into a desired form, such as pellet, rod and disc and loaded in the combustion chamber of a gas generator. The composition is ignited by firing an igniter and burned to generate a gas.
Inventors
- 👤 Koji Ochi
- 👤 Nobukazu Asano
- 👤 Kazunori Matsuda
- 👤 Kiyoaki Yanase
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:28
CPC Classifications
C; C06; C06B; C06B23/00; C06B23/04; C06D; C06D5/00; C06D5/06
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
79 words
A gas generator composition, comprising: a cellulose acetate acting as a deoxidized agent that generates a predetermined composition of gas upon being oxidized; a perchlorate acting as an oxidizing agent, the mixture of said cellulose acetate and said perchlorate being the major ingredient of said gas generator composition; and a metal oxide acting as a combustion temperature controller, said metal oxide being more than 5% by weight and not more than 40% by weight of said gas generator composition.
Claim 2
Dependent Claim
79 words
A gas generator composition, comprising: a cellulose acetate acting as a deoxidized agent that generates a predetermined composition of gas upon being oxidized; a perchlorate acting as an oxidizing agent, the mixture of said cellulose acetate and said perchlorate being the major ingredient of said gas generator composition; and a metal oxide acting as a combustion temperature controller, said metal oxide being more than 5% by weight and not more than 40% by weight of said gas generator composition.
Claim 3
Dependent Claim
21 words
The gas generator composition according to claim 1, wherein the content of said cellulose acetate is 8 to 26% by weight.
Claim 4
Dependent Claim
20 words
The gas generator composition according to claim 1, wherein the content of said perchlorate is 45 to 87% by weight.
Claim 5
Dependent Claim
14 words
The gas generator composition according to claim 1, wherein said perchlorate is potassium perchlorate.
Claim 6
Dependent Claim
21 words
The gas generator composition according to claim 4, wherein said potassium perchlorate has a particle size of 5 to 300 μm.
Claim 7
Dependent Claim
34 words
The gas generator composition according to claim 1, wherein said metal oxide is formed from at least one compound selected from the group consisting of copper oxide, manganese dioxide, iron oxide and nickel oxide.
Claim 8
Dependent Claim
21 words
The gas generator composition according to claim 1, wherein said metal oxide has a particle size of 30 μm or less.
Claim 9
Dependent Claim
15 words
The gas generator composition according to claim 1, wherein said cellulose acetate contains a plasticizer.
Claim 10
Dependent Claim
16 words
The gas generator composition according to claim 8, wherein said plasticizer is triacetin or dimethyl phthalate.
Claim 11
Dependent Claim
71 words
A gas generator composition, comprising: a cellulose acetate acting as a deoxidized agent that generates a predetermined composition of gas upon being oxidized; potassium perchlorate acting as an oxidizing agent, the mixture of said cellulose acetate and said perchlorate being the major ingredient of said gas generator composition; and a bitetrazole metal hydrate acting as a combustion temperature controller that forms 36% by weight or less of said gas generator composition.
Claim 12
Dependent Claim
71 words
A gas generator composition, comprising: a cellulose acetate acting as a deoxidized agent that generates a predetermined composition of gas upon being oxidized; potassium perchlorate acting as an oxidizing agent, the mixture of said cellulose acetate and said perchlorate being the major ingredient of said gas generator composition; and a bitetrazole metal hydrate acting as a combustion temperature controller that forms 36% by weight or less of said gas generator composition.
Claim 13
Dependent Claim
22 words
The gas generator composition according to claim 10, wherein said bitetrazole metal hydrate has a particle size of 30 μm or less.
Claim 14
Dependent Claim
17 words
The gas generator composition according to claim 10, wherein said bitetrazole metal hydrate is bitetrazole manganese dihydrate.
Claim 15
Dependent Claim
15 words
The gas generator composition according to claim 10, wherein said cellulose acetate contains a plasticizer.
Claim 16
Dependent Claim
16 words
The gas generator composition according to claim 13, wherein said plasticizer is triacetin or dimethyl phthalate.
Claim 17
Dependent Claim
81 words
A gas generator composition, comprising: a cellulose acetate acting as a deoxidized agent that generates a predetermined composition of gas upon being oxidized; a perchlorate acting as an oxidizing agent, the mixture of said cellulose acetate and said perchlorate being the major ingredient of said gas generator composition; and a nonmetallic compound acting as a combustion temperature controller, said nonmetallic compound comprising nitrogen and hydrogen, wherein the amount of said nitrogen is at least 11% by weight of said nonmetallic compound.
Claim 18
Dependent Claim
81 words
A gas generator composition, comprising: a cellulose acetate acting as a deoxidized agent that generates a predetermined composition of gas upon being oxidized; a perchlorate acting as an oxidizing agent, the mixture of said cellulose acetate and said perchlorate being the major ingredient of said gas generator composition; and a nonmetallic compound acting as a combustion temperature controller, said nonmetallic compound comprising nitrogen and hydrogen, wherein the amount of said nitrogen is at least 11% by weight of said nonmetallic compound.
Claim 19
Dependent Claim
37 words
The gas generator composition according to claim 15, wherein said nonmetallic compound is formed from at least one compound selected from the group consisting of guanidine compounds, oximes, amides, tetrazole derivatives, aromatic nitro compounds and ammonium nitrate.
Claim 20
Dependent Claim
22 words
The gas generator composition according to claim 15, wherein said nonmetallic compound has a nitrogen content of 11 to 83% by weight.
Claim 21
Dependent Claim
21 words
The gas generator composition according to claim 15, wherein the content of said nonmetallic compound is 10 to 45% by weight.
Claim 22
Dependent Claim
15 words
The gas generator composition according to claim 15, wherein said cellulose acetate contains a plasticizer.
Claim 23
Dependent Claim
16 words
The gas generator composition according to claim 19, wherein said plasticizer is triacetin or dimethyl phthalate.
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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) | 1999-01-08 | 1999-07-10 | 2000-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-01-08 | 2003-07-10 | 2004-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-01-08 | 2007-07-10 | 2008-01-09 | $7700.00 | Window Closed / Lapsed |