US3880081A
Expired / Lapsed
US
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High boron alloy steel fragmentation munition
Assignee: United States Department of the Army
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Filing: 1973-12-19
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Granted: 1975-04-29
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Expires: 1993-12-19
Abstract
Abstract An alloy steel for high explosive fragmentation munitions, having a high boron content, and wherein the alloying elements are:
Inventors
- 👤 Paul V Riffin
- 👤 Ernest N Kinas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:45
CPC Classifications
F; F42; F42B; F42B12/00; F42B12/72; F42B12/76
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
24 words
IN A HIGH EXPLOSIVE FRAGMENTATION MUNITION THE IMPROVEMENT, COMPRISING A FRAGMENTABLE SHELL BODY MADE OF AN ALLOY STEEL CONSISTING ESSENTIALLY OF THE FOLLOWING ELEMENTS:
Claim 2
Dependent Claim
24 words
IN A HIGH EXPLOSIVE FRAGMENTATION MUNITION THE IMPROVEMENT, COMPRISING A FRAGMENTABLE SHELL BODY MADE OF AN ALLOY STEEL CONSISTING ESSENTIALLY OF THE FOLLOWING ELEMENTS:
Claim 3
Dependent Claim
25 words
Fragmentation munition according to claim 1 wherein boron is present in said alloy steel shell in a proportion of about 0.05 to 0.1 weight %.
Claim 4
Dependent Claim
24 words
Fragmentation munition according to claim 1 wherein silicon is present in said alloy steel in a proportion of about 0.3 to 2.5 weight %.
Claim 5
Dependent Claim
24 words
In a high explosive fragmentation munition the improvement comprising a fragmentable shell body made of an alloy steel consisting essentially of the following elements:
Claim 6
Dependent Claim
24 words
In a high explosive fragmentation munition the improvement comprising a fragmentable shell body made of an alloy steel consisting essentially of the following elements:
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) | 1978-04-28 | 1978-10-28 | 1979-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-28 | 1982-10-28 | 1983-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-28 | 1986-10-28 | 1987-04-29 | $7700.00 | Window Closed / Lapsed |