Patent US4662281A successfully refreshed from Google Patents.
US4662281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low velocity disc pattern fragment warhead
Assignee: Boeing Co
•
Filing: 1984-09-28
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Granted: 1987-05-05
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Expires: 2004-09-28
Abstract
Abstract A fragment layer for a warhead including a plurality of axially adjacent, annular rings of preformed fragments, an annular retaining layer covering the outside surface of the rings, an annular explosive layer disposed between the annular rings and the warhead, and a detonator for detonating the annular explosive layer.
Inventors
- 👤 Earl E. Wilhelm
- 👤 Clayton J. Julien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:12
CPC Classifications
F; F42; F42B; F42B12/00; F42B12/02; F42B12/20; F42B12/22; F42C; F42C19/00; F42C19/08; F42C19/095
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
84 words
A fragment layer for a warhead having a longitudinal axis comprising: a plurality of axially adjacent, annular rings of preformed fragments, each said ring being coaxial with said axis and encompassing the periphery of said warhead; an annular retaining layer covering the outside surface of said rings to secure said fragments in position; an annular explosive layer disposed between said rings and the periphery of said warhead; and means for selectively detonating said explosive layer to generate a low velocity disc pattern of fragments.
Claim 2
Dependent Claim
84 words
A fragment layer for a warhead having a longitudinal axis comprising: a plurality of axially adjacent, annular rings of preformed fragments, each said ring being coaxial with said axis and encompassing the periphery of said warhead; an annular retaining layer covering the outside surface of said rings to secure said fragments in position; an annular explosive layer disposed between said rings and the periphery of said warhead; and means for selectively detonating said explosive layer to generate a low velocity disc pattern of fragments.
Claim 3
Dependent Claim
54 words
The fragment layer of claim 1, wherein each said ring comprises a plurality of annularly adjacent sections, each said section including a plurality of said segments and diverging from the periphery of said warhead such that the amount of said explosive layer between said warhead periphery and the segments of said section varies annularly.
Claim 4
Dependent Claim
18 words
The fragment layer of claim 2 wherein said retention layer varies in thickness to accommodate said diverging sections.
Claim 5
Dependent Claim
38 words
The fragment layer of claim 1 wherein said rings are axially spaced from each other and wherein said retaining layer comprises a plurality of annular retaining bands, one said retaining band covering the outside surface of said ring.
Claim 6
Dependent Claim
32 words
The fragment layer of claim 4 wherein said annular explosive layer comprises a plurality of annular explosive bands, one said explosive band being disposed between the warhead periphery and each said ring.
Claim 7
Dependent Claim
24 words
The fragment layer of claim 5, wherein the radial thickness of some of said explosive bands is different from other of said explosive bands.
Claim 8
Dependent Claim
21 words
The fragment layer of claim 5 or 6, wherein said detonating means includes means for detonating all said explosive bands simultaneously.
Claim 9
Dependent Claim
18 words
The fragment layer of claim 5 wherein said detonating means includes means for sequentially detonating said explosive bands.
Claim 10
Dependent Claim
22 words
The fragment layer of claim 5, wherein said detonating means includes means for varying the time of detonation of selected explosive bands.
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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) | 1990-05-04 | 1990-11-03 | 1991-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-04 | 1994-11-03 | 1995-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-04 | 1998-11-03 | 1999-05-05 | $7700.00 | Window Closed / Lapsed |