US4303015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pre-fragmented explosive shell
Assignee: FN Herstal SA
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Filing: 1980-02-15
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Granted: 1981-12-01
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Expires: 2000-02-15
Abstract
Abstract Pre-fragmented explosive shell, of the type substantially comprising a head and a body containing an explosive charge, a plurality of balls being housed in an annular space provided for between at least a part of the wall of the aforesaid body and the aforesaid explosive charge, in which each of the aforesaid balls consists of a core made from tungsten or tungsten carbide coated with a thin layer of zirconium.
Inventors
- 👤 Maurice V. Bourlet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:56
CPC Classifications
F; F42; F42B; F42B12/00; F42B12/02; F42B12/20; F42B12/22; F42B12/32; F42B12/36; F42B12/44
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
61 words
Pre-fragmented explosive shell comprising a head and a body containing an explosive charge, a plurality of balls being housed in an annular space between at least a part of the wall of the body and the explosive charge, in which each of said balls consists of a core made from tungsten or tungsten carbide coated with a thin layer of zirconium.
Claim 2
Dependent Claim
61 words
Pre-fragmented explosive shell comprising a head and a body containing an explosive charge, a plurality of balls being housed in an annular space between at least a part of the wall of the body and the explosive charge, in which each of said balls consists of a core made from tungsten or tungsten carbide coated with a thin layer of zirconium.
Claim 3
Dependent Claim
15 words
Shell according to claim 1, in which said zirconium layer is applied in gaseous phase.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-11-30 | 1985-06-01 | 1985-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-30 | 1989-06-01 | 1989-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-30 | 1993-06-01 | 1993-12-01 | $7700.00 | Window Closed / Lapsed |