US3946673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pyrophoris penetrator
Assignee: United States Department of the Navy
•
Filing: 1974-04-05
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Granted: 1976-03-30
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Expires: 1994-04-05
Abstract
Abstract Alloys of tungsten, zirconium and one or more binder metals are utilized asyrophoric penetrators.
Inventors
- 👤 George A. Hayes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:49
CPC Classifications
F; F42; F42B; F42B12/00; F42B12/72; F42B12/74
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
47 words
A pyrophoric penetrator fabricated from an alloy which contains from 95 to 49 weight percent tungsten, from 50 to 4 weight percent zirconium and from 10 to 1 weight percent of a ductile binder metal selected from the group consisting of nickel, iron, cobalt, and combinations thereof.
Claim 2
Dependent Claim
47 words
A pyrophoric penetrator fabricated from an alloy which contains from 95 to 49 weight percent tungsten, from 50 to 4 weight percent zirconium and from 10 to 1 weight percent of a ductile binder metal selected from the group consisting of nickel, iron, cobalt, and combinations thereof.
Claim 3
Dependent Claim
21 words
A pyrophoric penetrator containing 85 weight percent tungsten, 10 weight percent zirconium, 2.5 weight percent nickel and 2.5 weight percent iron.
Claim 4
Dependent Claim
21 words
A pyrophoric penetrator containing 85 weight percent tungsten, 10 weight percent zirconium, 2.5 weight percent nickel and 2.5 weight percent iron.
References Cited (Backward Citations)
US1658712A
Cited
US2801590A
Cited
US3518942A
Cited
US3203349A
Cited
US3307982A
Cited
US3561363A
Cited
US3599573A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-30 | 1979-09-29 | 1980-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-30 | 1983-09-29 | 1984-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-30 | 1987-09-29 | 1988-03-30 | $7700.00 | Window Closed / Lapsed |