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US4128996A
Expired / Lapsed
US
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Chlorite containing pyrotechnic composition and method of inflating an inflatable automobile safety restraint
Assignee: Honeywell International Inc
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Filing: 1977-12-05
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Granted: 1978-12-12
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Expires: 1997-12-05
Abstract
Abstract A pyrotechnic composition comprising: About 1 to 20% by weight of a thermoplastic resin selected from the group consisting of polyacetal resins, polyvinyl acetate resins and mixtures thereof; About 30 to 80% by weight of an alkali metal chlorite, such as sodium chlorite or potassium chlorite; and About 20 to 60% by weight of a coolant selected from the group consisting of calcium hydroxide, magnesium hydroxide or mixtures thereof. The invention also relates to a method of inflating an inflatable automobile safety restraint comprising the step of substantially completely inflating the restraint with the gaseous composition products of combustion of a composition comprising: About 1 to 20% by weight of a thermoplastic resin selected from the group consisting of polyacetal resins, polyvinyl acetate resins and mixtures thereof; About 30 to 80% by weight of an alkali metal chlorite, such as sodium chlorite or potassium chlorite; and About 20 to 60% by weight of a coolant selected from the group consisting of calcium hydroxide, magnesium hydroxide or mixtures thereof.
Inventors
- 👤 Eugene F. Garner
- 👤 Brian K. Hamilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:42
CPC Classifications
C; C06; C06D; C06D5/00; C06D5/06; C06B; C06B29/00; C06B29/02; C06B29/04
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
65 words
A pyrotechnic composition comprising: from about 1 to 20% by weight of a thermoplastic resin selected from the group consisting of polyacetal resins, polyvinyl acetate resins and mixtures thereof; from about 30 to 80% by weight of an alkali metal chlorite; and from about 20 to 60% by weight of a coolant selected from the group consisting of calcium hydroxide, magnesium hydroxide or mixtures thereof.
Claim 2
Dependent Claim
65 words
A pyrotechnic composition comprising: from about 1 to 20% by weight of a thermoplastic resin selected from the group consisting of polyacetal resins, polyvinyl acetate resins and mixtures thereof; from about 30 to 80% by weight of an alkali metal chlorite; and from about 20 to 60% by weight of a coolant selected from the group consisting of calcium hydroxide, magnesium hydroxide or mixtures thereof.
Claim 3
Dependent Claim
41 words
The composition of claim 1 wherein said composition comprises: from about 1 to 15% by weight of a polyacetal resin; from about 40 to 60% by weight of sodium chlorite; and from about 30 to 50% by weight of calcium hydroxide.
Claim 4
Dependent Claim
20 words
The pyrotechnic composition of claim 2 wherein said composition further includes about 0.01 to 0.5% by weight of a pigment.
Claim 5
Dependent Claim
11 words
The composition of claim 3 wherein said pigment is carbon black.
Claim 6
Dependent Claim
26 words
The composition of claim 1 wherein said thermoplastic resin is a polyacetal resin, said alkali metal chlorite is sodium chlorite and said coolant is calcium hydroxide.
Claim 7
Independent Claim
87 words
A method of inflating an inflatable automobile safety restraint comprising the step of substantially completely inflating the restraint with the gaseous composition products of combustion of a composition comprising: about 1 to 20% by weight of a thermoplastic resin selected from the group consisting of polyacetal resins, polyvinyl acetate resins and mixtures thereof; about 30 to 80% by weight of an alkali metal chlorite; and about 20 to 60% by weight of a coolant selected from the group consisting of calcium hydroxide, magnesium hydroxide or mixtures thereof.
Claim 8
Independent Claim
87 words
A method of inflating an inflatable automobile safety restraint comprising the step of substantially completely inflating the restraint with the gaseous composition products of combustion of a composition comprising: about 1 to 20% by weight of a thermoplastic resin selected from the group consisting of polyacetal resins, polyvinyl acetate resins and mixtures thereof; about 30 to 80% by weight of an alkali metal chlorite; and about 20 to 60% by weight of a coolant selected from the group consisting of calcium hydroxide, magnesium hydroxide or mixtures thereof.
Claim 9
Dependent Claim
50 words
The method of claim 6 wherein said composition comprises: about 5 to 15% by weight of a polyacetal resin, about 40 to 60% by weight of sodium chlorate; and about 20 to 60% by weight of coolant selected from the group consisting of calcium hydroxide, magnesium hydroxide or mixtures thereof.
Claim 10
Dependent Claim
20 words
The composition of claim 7 wherein said composition further includes from about 0.01 to 0.05% by weight of a pigment.
Claim 11
Dependent Claim
11 words
The composition of claim 8 wherein said pigment is carbon black.
Claim 12
Dependent Claim
26 words
The composition of claim 6 wherein said thermoplastic resin is a polyacetal resin, said alkali metal chlorite is sodium chlorite and said coolant is calcium hydroxide.
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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) | 1981-12-11 | 1982-06-12 | 1982-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-11 | 1986-06-12 | 1986-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-11 | 1990-06-12 | 1990-12-12 | $7700.00 | Window Closed / Lapsed |