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US3971729A
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US
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Preparation of gas generation grain
Assignee: HBB A CORP OF LP
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Filing: 1973-09-14
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Granted: 1976-07-27
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Expires: 1993-09-14
Abstract
Abstract A technique is provided for making a granulated propellant suitable for gas generation for an automobile passenger restraint bag. The propellant is about 1/4 anhydrous nickel formate and 3/4 potassium chlorate. The dry powders are blended and mixed with about 12 to 15% of liquid comprising water and up to 50% methanol. The blended mixture is granulated and dehydrated.
Inventors
- 👤 Hubert G. Timmerman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:01
CPC Classifications
C; C06; C06B; C06B29/00; C06B29/02; C06B29/08; C06D; C06D5/00; C06D5/06
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
51 words
A process for preparing a deflagration gas generation mixture comprising the steps of: mixing substantially anhydrous nickel formate powder with an oxidizer compound powder; blending the mixture with a liquid having more water than sufficient to form nickel formate dihydrate; agglomerating the blended mixture; and substantially completely dehydrating the agglomerated mixture.
Claim 2
Dependent Claim
51 words
A process for preparing a deflagration gas generation mixture comprising the steps of: mixing substantially anhydrous nickel formate powder with an oxidizer compound powder; blending the mixture with a liquid having more water than sufficient to form nickel formate dihydrate; agglomerating the blended mixture; and substantially completely dehydrating the agglomerated mixture.
Claim 3
Dependent Claim
30 words
A process as defined in claim 1 further comprising the preliminary step before the mixing step of forming anhydrous nickel formate by substantially completely dehydrating nickel formate dihydrate by heating.
Claim 4
Dependent Claim
16 words
A process as defined in claim 2 wherein the agglomeration step comprises granulation by wet sieving.
Claim 5
Dependent Claim
33 words
A process as defined in claim 1 wherein the quantity of liquid added in the blending step is in the range of from about 12 to 25% by weight of the dry mixture.
Claim 6
Dependent Claim
30 words
A process as defined in claim 4 wherein the mixture comprises about 1/4 to 1/3 anhydrous nickel formate and about 2/3 to 3/4 alkali metal chlorate or alkali metal perchlorate.
Claim 7
Dependent Claim
31 words
A process as defined in claim 4 wherein the liquid is at least about 50% water and up to about 50% liquid miscible with water and vaporizable more rapidly than water.
Claim 8
Dependent Claim
16 words
A process as defined in claim 6 wherein the liquid comprises up to about 50% methanol.
Claim 9
Dependent Claim
10 words
A product produced according to the process of claim 1.
Claim 10
Dependent Claim
16 words
A process as defined in claim 1 wherein the agglomeration step comprises granulation by wet sieving.
Claim 11
Dependent Claim
23 words
A process as defined in claim 1 wherein the oxidizer compound powder is selected from the group consisting of chlorates, perchlorates and nitrates.
References Cited (Backward Citations)
US3837942A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-27 | 1980-01-26 | 1980-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-27 | 1984-01-26 | 1984-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-27 | 1988-01-26 | 1988-07-27 | $7700.00 | Window Closed / Lapsed |