Patent US3785149A successfully refreshed from Google Patents.
US3785149A
Expired / Lapsed
US
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Method for filling a bag with water vapor and carbon dioxide gas
Assignee: HBB A CORP OF LP
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Filing: 1972-06-08
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Granted: 1974-01-15
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Expires: 1992-06-08
Abstract
Abstract A deflagration composition yielding a gas comprising principally carbon dioxide and water vapor comprises a substantially homogeneous mixture of citric acid powder in the range of from about 25 to 37 percent by weight and an oxidizer powder selected from the group consisting of potassium chlorate, potassium perchlorate, sodium chlorate, and sodium perchlorate. This composition may be used adjacent a coolant powder comprising up to about 40 percent by weight of potassium chlorate and an endothermic decomposition coolant having a thermal decomposition product selected from the class consisting of carbon dioxide and water.
Inventors
- 👤 H Timmerman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:49
CPC Classifications
B; B60; B60R; B60R21/00; B60R21/02; B60R21/16; B60R21/26; B60R21/264; B60R21/2644; C; C06; C06B; C06B29/00; C06B29/02; C06B29/04; C06D; C06D5/00; C06D5/06; B60R2021/2648
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
45 words
A method as defined in claim 1 further comprising suppressing formation of carbon monoxide by providing oxidizing powder in the mixture in a proportion about 5 percent higher than the stoichiometric proportion that produces substantially entirely carbon dioxide and water vapor as gaseous reaction products.
Claim 2
Dependent Claim
67 words
A method as defined in claim 2 further comprising the steps of: cooling the products of the ignition reaction by contacting the reaction products with an endothermic decomposition coolant powder that decomposes tO produce a gaseous decomposition product selected from the class consisting of carbon dioxide, oxygen and water vapor; and directing the carbon dioxide, oxygen or water vapor from the cooling step into the gas bag.
Claim 3
Independent Claim
64 words
A method for inflating a gas bag comprising the steps of: igniting a mixture of citric acid in a proportion of from about 25 to 37 percent by weight and an oxidizing powder selected from the class consisting of potassium chlorate, potassium perchlorate, sodium chlorate, and sodium perchlorate; and directing water vapor and carbon dioxide gas from the igniting step into a gas bag.
Claim 4
Dependent Claim
14 words
A method as defined in claim 4 wherein the oxidizer powder is potassium chlorate.
Claim 5
Dependent Claim
67 words
A method as defined in claim 4 further comprising the steps of: cooling the products of the ignition reaction by contacting the reaction products with an endothermic decomposition coolant powder that decomposes to produce a gaseous decomposition product selected from the class consisting of carbon dioxide, oxygen, and water vapor; and directing the carbon dioxide, oxygen or water vapor from the cooling step into the gas bag.
Claim 6
Dependent Claim
52 words
A method as defined in claim 6 wherein the coolant powder comprises up to about 60 percent of potassium chlorate and a powder selected from the class consisting of magnesium carbonate, manganese carbonate, zinc carbonate, barium carbonate, calcium carbonate, potassium bicarbonate, hydrated magnesium carbonate, hydrated zirconium oxide, borax, and barium oxide octahydrate.
Claim 7
Dependent Claim
28 words
A method as defined in claim 6 wherein the coolant powder comprises up to about 60 percent by weight of potassium chlorate and a balance of zinc carbonate.
Claim 8
Dependent Claim
33 words
A method as defined in claim 6 wherein the cooling step is conducted partly remote from the igniting step by separating the mixture of citric acid and oxidizer powder from the coolant powder.
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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) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |