US3960049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforcement of cast or pressed explosives
Assignee: United States Department of the Navy
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Filing: 1975-03-19
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Granted: 1976-06-01
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Expires: 1995-03-19
Abstract
Abstract Various synthetic, natural or metal fibers, in either random or selective ientation are cast or pressed in place within the explosive compositions to reinforce the explosives against cracking induced by service environments and thereby reduce the possibility of premature detonation or ignition within the gun bore.
Inventors
- 👤 John H. Smith
- 👤 George S. Rogers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:39
CPC Classifications
F; F42; F42B; F42B12/00; F42B12/02; F42B12/20
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
60 words
A method of reinforcing explosives against cracking comprising: pouring a melted inert filler into a base of an ordnance item; inserting one end of a pre-formed material of high strength and low stretch into said molten pool; cooling said molten pool to fix the pre-form in its desired orientation; pouring melted explosive into the ordnance item; and cooling said explosive.
Claim 2
Independent Claim
60 words
A method of reinforcing explosives against cracking comprising: pouring a melted inert filler into a base of an ordnance item; inserting one end of a pre-formed material of high strength and low stretch into said molten pool; cooling said molten pool to fix the pre-form in its desired orientation; pouring melted explosive into the ordnance item; and cooling said explosive.
Claim 3
Dependent Claim
42 words
The method of claim 1 including the steps of: forming the pre-form of polyester net, prestressing the net, and coating the net with a resin to stiffen the pre-form in the desired shape prior to inserting the pre-form in the ordnance item.
References Cited (Backward Citations)
US2977885A
Cited
US2940390A
Cited
US3000308A
Cited
US2968986A
Cited
US3311013A
Cited
GB1068901A
Cited
US3301187A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-01 | 1979-12-01 | 1980-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-01 | 1983-12-01 | 1984-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-01 | 1987-12-01 | 1988-06-01 | $7700.00 | Window Closed / Lapsed |