US3757693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fragmentation wrap for explosive weapons
Assignee: Avco Corp
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Filing: 1972-08-14
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Granted: 1973-09-11
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Expires: 1992-08-14
Abstract
Abstract A fragmentation wrap for explosive weapons is disclosed. The fragmentation sheet for explosive weapons having a predefined fragmentation shape therein is fabricated by the progressive flattening, shearing and/or indenting of hot or cold rolled steel. The complete fragmentation wrap may be a single layer or multi-layer wrap which is conformed to enclose a bomb or the like.
Inventors
- 👤 F Shea
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:17
CPC Classifications
F; F42; F42B; F42B12/00; F42B12/02; F42B12/20; F42B12/22; B; B21; B21D; B21D28/00; B21D28/02; B21D28/10; B21D31/00; B21D31/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
115 words
A fragmentation wrap for wrapping around the exterior of explosive devices such as bombs, missiles and the like comprising a continuous planar sheet of metal having individually shaped fragment elements formed therein, a plurality of substantially linear shear lines repetitively formed in said sheet in slanted relation to the sides of said sheet, said shear lines being linearly displaced along the length of said sheet an incremental distance according to the fragment design, said substantially linear shear lines defining a partial perimeter of a geometric shape wherein adjacent repetitive shear lines combine to define the individual fragment elements of a given geometric shape, said fragment elements being connected together by unsheared portions of the perimeter.
Claim 2
Dependent Claim
115 words
A fragmentation wrap for wrapping around the exterior of explosive devices such as bombs, missiles and the like comprising a continuous planar sheet of metal having individually shaped fragment elements formed therein, a plurality of substantially linear shear lines repetitively formed in said sheet in slanted relation to the sides of said sheet, said shear lines being linearly displaced along the length of said sheet an incremental distance according to the fragment design, said substantially linear shear lines defining a partial perimeter of a geometric shape wherein adjacent repetitive shear lines combine to define the individual fragment elements of a given geometric shape, said fragment elements being connected together by unsheared portions of the perimeter.
Claim 3
Dependent Claim
32 words
The fragmentation wrap according to claim 1 in which the shear lines are partially discontinuous wherein additional non-sheared links connect the individual fragment elements linearly along the length of the fragmentation wrap.
Claim 4
Dependent Claim
86 words
The fragmentation wrap according to claim 2 in which said fragmentation wrap is conformed about the exterior surface of an explosive device, and further comprising a thin skin covering the outside surface of said fragmentation wrap to provide a smooth external aerodynamic surface, said skin serving as a structural part and as a fairing for said explosive device; and a pair of bands secured around said skin and fragmentation wrap at a front and rear thereof to hold said wrap and skin against the explosive device.
Claim 5
Dependent Claim
43 words
A fragmentation wrap according to claim 1 further comprising a second planar sheet having sheared fragment elements formed therein; and means interposed between said sheets to prevent welding of fragment elements together due to the energy generated during explosion of the explosive device.
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) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |