US3985658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extinguishing agent for combustible metal fires
Assignee: Energy Research and Development Administration ERDA
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Filing: 1975-04-16
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Granted: 1976-10-12
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Expires: 1995-04-16
Abstract
Abstract A low chloride extinguishing agent for combustible metal fires comprising from substantially 75 to substantially 94 weight percent of sodium carbonate as the basic fire extinguishing material, from substantially 1 to substantially 5 weight percent of a water-repellent agent such as a metal stearate, from substantially 2 to substantially 10 weight percent of a flow promoting agent such as attapulgus clay, and from substantially 3 to substantially 15 weight percent of a polyamide resin as a crusting agent.
Inventors
- 👤 John F. Riley
- 👤 Edgar Eugene Stauffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:38
CPC Classifications
A; A62; A62D; A62D1/00; A62D1/0007; A62D1/0014
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
64 words
A finely divided, fire extinguishing composition for air-combustible metal fires comprising from substantially 75 to substantially 94 weight percent of sodium carbonate, from substantially 1 to substantially 5 weight percent of a water-repellent agent, from substantially 2 to substantially 10 weight percent of a flow promoting agent, and from substantially 3 to substantially 15 weight percent of a polyamide resin as a crusting agent.
Claim 2
Dependent Claim
64 words
A finely divided, fire extinguishing composition for air-combustible metal fires comprising from substantially 75 to substantially 94 weight percent of sodium carbonate, from substantially 1 to substantially 5 weight percent of a water-repellent agent, from substantially 2 to substantially 10 weight percent of a flow promoting agent, and from substantially 3 to substantially 15 weight percent of a polyamide resin as a crusting agent.
Claim 3
Dependent Claim
18 words
A composition according to claim 1 wherein the water-repellent agent is a metallic salt of a fatty acid.
Claim 4
Dependent Claim
26 words
A composition according to claim 2 wherein the metallic salt of a fatty acid is a stearic acid salt of an alkali or alkaline earth metal.
Claim 5
Dependent Claim
14 words
A composition according to claim 1 wherein the flow promoting agent is attapulgus clay.
Claim 6
Dependent Claim
37 words
A composition according to claim 1 wherein the water-repellent agent is an alkali metal or alkaline earth metal salt of stearic acid, the flow promoting agent is attapulgus clay, and the polyamide resin is a nylon polyamide.
Claim 7
Dependent Claim
38 words
A finely divided, fire extinguishing composition for air-combustible metal fires containing sodium carbonate, sodium stearate, attapulgus clay and nylon-6,6 in substantially the following proportions by weight: sodium carbonate, 90%; sodium stearate, 2%; attapulgus clay, 3%; and nylon-6,6, 5%.
Claim 8
Dependent Claim
38 words
A finely divided, fire extinguishing composition for air-combustible metal fires containing sodium carbonate, sodium stearate, attapulgus clay and nylon-6,6 in substantially the following proportions by weight: sodium carbonate, 90%; sodium stearate, 2%; attapulgus clay, 3%; and nylon-6,6, 5%.
Claim 9
Independent Claim
70 words
A method of fighting an air-combustible metal fire which comprises applying to the fire a composition comprising from substantially 75 to substantially 94 weight percent of sodium carbonate, from substantially 1 to substantially 5 weight percent of a water-repellent agent, from substantially 2 to substantially 10 weight percent of a flow promoting agent, and from substantially 3 to substantially 15 weight percent of a polyamide resin as a crusting agent.
Claim 10
Independent Claim
70 words
A method of fighting an air-combustible metal fire which comprises applying to the fire a composition comprising from substantially 75 to substantially 94 weight percent of sodium carbonate, from substantially 1 to substantially 5 weight percent of a water-repellent agent, from substantially 2 to substantially 10 weight percent of a flow promoting agent, and from substantially 3 to substantially 15 weight percent of a polyamide resin as a crusting agent.
Claim 11
Dependent Claim
37 words
A method according to claim 7 wherein the water-repellent agent is an alkali metal or alkaline earth metal salt of stearic acid, the flow promoting agent is attapulgus clay, and the polyamide resin is a nylon polyamide.
Claim 12
Independent Claim
45 words
A method of fighting an air-combustible metal fire which comprises applying to the fire a composition comprising substantially 90 weight percent of sodium carbonate, substantially 2 weight percent of sodium stearate, substantially 3 weight percent of attapulgus clay, and substantially 5 weight percent of nylon-6,6.
Claim 13
Independent Claim
45 words
A method of fighting an air-combustible metal fire which comprises applying to the fire a composition comprising substantially 90 weight percent of sodium carbonate, substantially 2 weight percent of sodium stearate, substantially 3 weight percent of attapulgus clay, and substantially 5 weight percent of nylon-6,6.
Claim 14
Dependent Claim
15 words
A method according to claim 9 wherein the air-combustible metal fire is a sodium fire.
References Cited (Backward Citations)
US3608641A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-10-12 | 1980-04-12 | 1980-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-12 | 1984-04-12 | 1984-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-12 | 1988-04-12 | 1988-10-12 | $7700.00 | Window Closed / Lapsed |