US3677183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pre-shaped fragmentation device
Assignee: United States Department of the Navy
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Filing: 1966-10-31
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Granted: 1972-07-18
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Expires: 1986-10-31
Abstract
Abstract There is disclosed a cylindrically-shaped fragmentation device consisting of a plurality of preformed shims or wafers arranged in brick-like fashion to form an explosive casing. The shims project edge-on when the munition is detonated but due to their unique shape they assume a dynamically stabilized flight path.
Inventors
- 👤 James C Talley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:24
CPC Classifications
F; F42; F42B; F42B12/00; F42B12/02; F42B12/20; F42B12/22
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
136 words
A fragmentation type ordnance device consisting of an explosive charge; and a fragment producing tubular casing, a nose portion secured to the casing forward end, a base portion secured to the casing rearward end, said casing comprising a plurality of rings secured to the side of said charge by an adhesive means, said rings comprising a plurality of pre-shaped, individual, identical wafer-like shims, arranged in a single layer, each having at least two straight opposite coated sides, said shims being juxtaposed and in a tightly packed relation to each other in each of said rings with essentially no void spaces between said shims; whereby, upon detonation, said shims are subject to substantially high pressures without residual deformation and are projected in an edge-on attitude continuing to fly in substantially said attitude to deeply penetrate the target.
Claim 2
Dependent Claim
136 words
A fragmentation type ordnance device consisting of an explosive charge; and a fragment producing tubular casing, a nose portion secured to the casing forward end, a base portion secured to the casing rearward end, said casing comprising a plurality of rings secured to the side of said charge by an adhesive means, said rings comprising a plurality of pre-shaped, individual, identical wafer-like shims, arranged in a single layer, each having at least two straight opposite coated sides, said shims being juxtaposed and in a tightly packed relation to each other in each of said rings with essentially no void spaces between said shims; whereby, upon detonation, said shims are subject to substantially high pressures without residual deformation and are projected in an edge-on attitude continuing to fly in substantially said attitude to deeply penetrate the target.
Claim 3
Dependent Claim
23 words
The ordnance device according to claim 1 wherein said shims in each of said rings are shaped in the form of a tetragon.
Claim 4
Dependent Claim
69 words
The ordnance device according to claim 2 wherein said shims are substantially in the space of trapezoids with the smaller of said shiMs two parallel sides exposed to the explosive charge through said adhesive means, the other of said parallel sides exposed directly to the exterior of the ordnance device and each of the coated non-parallel sides wholly in contact with a coated non-parallel side of an adjacent shim.
Claim 5
Dependent Claim
88 words
An ordnance device according to claim 2 wherein said shims have one coated side thereof which is in contact with an adjacent coated shim, longer than its opposite side, such that the force exerted by the weight of said shims is greater at said longer side than at said opposite shorter side, and whereby the counter force from said explosive charge is equal along said shim thereby creating a rotational movement on said shims causing them to rotate about an axis normal to their surface of greater area.
Claim 6
Dependent Claim
69 words
The ordnance device according to claim 4 wherein said shims are substantially in the shape of trapezoids with the smaller of said shims two parallel sides exposed to the explosive charge through said adhesive means, the other of said parallel sides exposed directly to the exterior of the ordnance device and each of the shorter non-parallel sides wholly in contact with a longer non-parallel side of an adjacent shim.
Claim 7
Dependent Claim
35 words
The ordnance device according to claim 4 wherein said casing shims are arranged in brick-like fashion by the shims of each of said rings being in overlapping relation to the shims of an adjacent ring.
Claim 8
Dependent Claim
35 words
The ordnance device according to claim 1 wherein said casing shims are arranged in brick-like fashion by the shims of each of said rings being in overlapping relation to the shims of an adjacent ring.
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) | 1975-07-18 | 1976-01-17 | 1976-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-18 | 1980-01-17 | 1980-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-18 | 1984-01-17 | 1984-07-18 | $7700.00 | Window Closed / Lapsed |