Patent US2261337A successfully refreshed from Google Patents.
US4131499A
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Low smoke propellant
Assignee: ATK Launch Systems LLC
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Filing: 1977-06-08
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Granted: 1978-12-26
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Expires: 1997-06-08
Abstract
Abstract Solid propellant compositions comprising a binder component based on hydroxy or carboxy containing perfluorocarbon polymers and nitramines, and which optionally contain as plasticizers fluorinated hydrocarbons, or perfluorinated esters, ethers, alkenes, or alkanes, having high specific impulse and low smoke exhaust are disclosed.
Inventors
- 👤 David A. Flanigan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:21
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/62; C08G18/6275; C08G18/6279; C06; C06B; C06B45/00; C06B45/04; C06B45/06; C06B45/10; C08K; C08K5/00; C08K5/16; C08K5/32
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
32 words
A low smoke propellant composition which comprises: (a) a nitramine, (b) a solid binder component based on a hydroxy or carboxy substituted perfluorocarbon powder, and which is substantially free of metallic fuel.
Claim 2
Dependent Claim
32 words
A low smoke propellant composition which comprises: (a) a nitramine, (b) a solid binder component based on a hydroxy or carboxy substituted perfluorocarbon powder, and which is substantially free of metallic fuel.
Claim 3
Dependent Claim
25 words
A solid propellant composition as defined in claim 1 wherein the binder additionally contains a liquid perfluorinated ester, ether, alkane, or alkene as a plasticizer.
Claim 4
Dependent Claim
24 words
A solid propellant composition as defined in claim 1 wherein the fluorocarbon to nitramine ratio is from 10:90 to 60:40 on a weight basis.
Claim 5
Dependent Claim
24 words
A solid propellant composition as defined in claim 2 wherein the fluorocarbon to nitramine ratio is from 10:90 to 60:40 on a weight basis.
Claim 6
Dependent Claim
24 words
A solid propellant composition as defined in claim 3 wherein the fluorocarbon to nitramine ratio is from 33:67 to 31:69 on a weight basis.
Claim 7
Dependent Claim
26 words
A solid propellant composition as defined in claim 1 wherein the ratio of fluorinated binder to nitramine is from 33:67 to 31:69 on a weight basis.
Claim 8
Dependent Claim
19 words
A solid propellant composition as defined in claim 1 wherein the fluorinated binder is based upon hydroxy terminated polytetrafluoroethylene.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-12-25 | 1982-06-26 | 1982-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-25 | 1986-06-26 | 1986-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-25 | 1990-06-26 | 1990-12-26 | $7700.00 | Window Closed / Lapsed |