Patent US4012244A successfully refreshed from Google Patents.
US4012244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High density impulse solid propellant
Assignee: United States Department of the Navy
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Filing: 1961-03-31
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Granted: 1977-03-15
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Expires: 1981-03-31
Abstract
Abstract 1. A high density solid propellant composition comprising zirconium hydride, ammonium perchlorate and a copolymer of vinylidene fluoride and perfluoropropylene.
Inventors
- 👤 Martin H. Kaufman
- 👤 Peter L. Stang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:02
CPC Classifications
C; C06; C06B; C06B27/00; C06B45/00; C06B45/04; C06B45/06; C06B45/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
19 words
A high density solid propellant composition comprising zirconium hydride, ammonium perchlorate and a copolymer of vinylidene fluoride and perfluoropropylene.
Claim 2
Dependent Claim
19 words
A high density solid propellant composition comprising zirconium hydride, ammonium perchlorate and a copolymer of vinylidene fluoride and perfluoropropylene.
Claim 3
Dependent Claim
39 words
A high density specific impulse solid propellant composition comprising from 5 to 20% by weight of a copolymer of vinylidene fluoride and perfluoropropylene, 40 to 60% by weight of ammonium perchlorate, and 20 to 50% by weight zirconium hydride.
Claim 4
Dependent Claim
39 words
A high density specific impulse solid propellant composition comprising from 5 to 20% by weight of a copolymer of vinylidene fluoride and perfluoropropylene, 40 to 60% by weight of ammonium perchlorate, and 20 to 50% by weight zirconium hydride.
Claim 5
Dependent Claim
33 words
A high density specific impulse solid propellant composition consisting essentially of 45% by weight zirconium hydride, 40% by weight ammonium perchlorate and 15% by weight of a copolymer of vinylidene fluoride and perfluoropropylene.
Claim 6
Dependent Claim
33 words
A high density specific impulse solid propellant composition consisting essentially of 45% by weight zirconium hydride, 40% by weight ammonium perchlorate and 15% by weight of a copolymer of vinylidene fluoride and perfluoropropylene.
Claim 7
Dependent Claim
31 words
A high density solid propellant composition consisting essentially of about 45% by weight zirconium hydride, 40% by weight ammonium perchlorate and 15% by weight of a copolymer of tetrafluoroethylene and perfluoropropylene.
Claim 8
Dependent Claim
31 words
A high density solid propellant composition consisting essentially of about 45% by weight zirconium hydride, 40% by weight ammonium perchlorate and 15% by weight of a copolymer of tetrafluoroethylene and perfluoropropylene.
Claim 9
Dependent Claim
74 words
A high density solid propellant composition comprising from 20 to 50% by weight of a metal hydride, 40 to 60% by weight of ammonium perchlorate and 5 to 20% by weight of a polymer selected from the class of binders consisting of a copolymer of vinylidene fluoride and perfluoropropylene, a copolymer of hexafluoropropylene and vinylidene fluoride, a copolymer of tetrafluoroethylene and perfluoropropylene, a homopolymer of chlorotrifluoroethylene and a copolymer of chlorotrifluoroethylene and vinylidene fluoride.
Claim 10
Dependent Claim
74 words
A high density solid propellant composition comprising from 20 to 50% by weight of a metal hydride, 40 to 60% by weight of ammonium perchlorate and 5 to 20% by weight of a polymer selected from the class of binders consisting of a copolymer of vinylidene fluoride and perfluoropropylene, a copolymer of hexafluoropropylene and vinylidene fluoride, a copolymer of tetrafluoroethylene and perfluoropropylene, a homopolymer of chlorotrifluoroethylene and a copolymer of chlorotrifluoroethylene and vinylidene fluoride.
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) | 1980-03-14 | 1980-09-13 | 1981-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-14 | 1984-09-13 | 1985-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-14 | 1988-09-13 | 1989-03-15 | $7700.00 | Window Closed / Lapsed |