US3865660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-toxic, non-corrosive, odorless gas generating composition
Assignee: ATK Launch Systems LLC
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Filing: 1973-03-12
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Granted: 1975-02-11
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Expires: 1993-03-12
Abstract
Abstract A nitrogen gas generating composition which upon combustion generates relatively low temperature non-toxic and odorless gases and low yield substantially non-corrosive and odorless solid decomposition products is achieved by using an alkali metal azide as the source of nitrogen gas and anhydrous chromic chloride as an oxidizer for the azide. In a preferred embodiment, the gas generating composition also contains aluminum oxide as an inert heat sink which cools the generated gases. The gas generating compositions of this invention are especially useful for inflating passgener vehicle protective crash bags.
Inventors
- 👤 Norman H Lundstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:01
CPC Classifications
C; C06; C06D; C06D5/00; C06D5/06; C06B; C06B35/00
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
59 words
A GAS GENERATING COMPOSITION WHICH UPON COMBUSTION YIELDS NON-TOXIC, ODORLESS GASES, AND SUBSTANTIALLY NONCORROSIVE, AND ODORLESS SOLID DECOMPOSITION PRODUCTS, SAID COMPOSITION CONSISTING ESSENTIALLY OF: A. FROM 2.8 TO 3.2 MOLES OF AN ALKALI METAL AZIDE SELECTED FROM THE GROUP CONSISTING OF SODIUM AZIDE, LITHIUM AZIDE, AND POTASSIUM AZIDE, AND B. FROM 0.8 TO 1.2 MOLES OF ANHYDROUS CHROMIC CHLORIDE.
Claim 2
Dependent Claim
59 words
A GAS GENERATING COMPOSITION WHICH UPON COMBUSTION YIELDS NON-TOXIC, ODORLESS GASES, AND SUBSTANTIALLY NONCORROSIVE, AND ODORLESS SOLID DECOMPOSITION PRODUCTS, SAID COMPOSITION CONSISTING ESSENTIALLY OF: A. FROM 2.8 TO 3.2 MOLES OF AN ALKALI METAL AZIDE SELECTED FROM THE GROUP CONSISTING OF SODIUM AZIDE, LITHIUM AZIDE, AND POTASSIUM AZIDE, AND B. FROM 0.8 TO 1.2 MOLES OF ANHYDROUS CHROMIC CHLORIDE.
Claim 3
Dependent Claim
24 words
The composition as recited in claim 1 wherein the composition contains 3 moles of alkali metal azide and 1 mole of anhydrous chromic chloride.
Claim 4
Dependent Claim
19 words
The composition as recited in claim 1 further containing from 5 to 15 percent by weight of aluminum oxide.
Claim 5
Dependent Claim
16 words
The composition as recited in claim 3 containing about 9 percent by weight of aluminum oxide.
Claim 6
Dependent Claim
15 words
The composition as recited in claim 1 wherein the alkali metal azide is sodium azide.
Claim 7
Dependent Claim
15 words
The composition as recited in claim 1 wherein the alkali metal azide is lithium azide.
Claim 8
Dependent Claim
15 words
The composition as recited in claim 1 wherein the alkali metal azide is potassium azide.
Claim 9
Dependent Claim
28 words
A gas generating composition which generates non-toxic, non-corrosive, odorless decomposition products consisting essentially of a. 50.16 percent NaN3 b. 40.75 percent Anhydrous CrCl3, and c. 9.09 percent Al2O3.
Claim 10
Dependent Claim
28 words
A gas generating composition which generates non-toxic, non-corrosive, odorless decomposition products consisting essentially of a. 50.16 percent NaN3 b. 40.75 percent Anhydrous CrCl3, and c. 9.09 percent Al2O3.
Claim 11
Dependent Claim
28 words
A gas generating composition which generates non-toxic, non-corrosive, odorless decomposition products consisting essentially of a. 43.47 percent LiN3 b. 46.53 percent Anhydrous CrCl3, and c. 10 percent Al2O3.
Claim 12
Dependent Claim
28 words
A gas generating composition which generates non-toxic, non-corrosive, odorless decomposition products consisting essentially of a. 43.47 percent LiN3 b. 46.53 percent Anhydrous CrCl3, and c. 10 percent Al2O3.
Claim 13
Independent Claim
123 words
The method of making a gas generating composition containing an alkali metal azide, anhydrous chromic chloride, and aluminum oxide which comprises the steps of: a. screening the alkali metal azide to obtain granules having a particle size of about -70 mesh; b. grinding an anhydrous chromic chloride to an average particle diameter of from 1 to 3 microns; c. blending an alkali metal azide, chromic chloride, and aluminum oxide to produce an intimate mixture of solids; d. pressing the intimate solids mixture to produce pellets of gas generating composition; e. grinding the pellets to produce granules of gas generating composition; and f. screening the granules of gas generating composition to recover a fraction having a particle size of from -6 to +10 mesh.
Claim 14
Independent Claim
123 words
The method of making a gas generating composition containing an alkali metal azide, anhydrous chromic chloride, and aluminum oxide which comprises the steps of: a. screening the alkali metal azide to obtain granules having a particle size of about -70 mesh; b. grinding an anhydrous chromic chloride to an average particle diameter of from 1 to 3 microns; c. blending an alkali metal azide, chromic chloride, and aluminum oxide to produce an intimate mixture of solids; d. pressing the intimate solids mixture to produce pellets of gas generating composition; e. grinding the pellets to produce granules of gas generating composition; and f. screening the granules of gas generating composition to recover a fraction having a particle size of from -6 to +10 mesh.
Claim 15
Dependent Claim
34 words
The method as recited in claim 10 wherein the granules having a particle size of -20 mesh are repressed into pellets having a diameter of about 1/4 inch and a thickness of 0.05 inch.
References Cited (Backward Citations)
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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) | 1978-02-10 | 1978-08-12 | 1979-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-10 | 1982-08-12 | 1983-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-10 | 1986-08-12 | 1987-02-11 | $7700.00 | Window Closed / Lapsed |