US4222329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Underwater cutting device
Assignee: United States Department of the Navy
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Filing: 1973-07-16
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Granted: 1980-09-16
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Expires: 1993-07-16
Abstract
Abstract An underwater cutting device which utilizes a W shaped liner to separate ainear explosive charge from a watertight standoff volume. The liner is fabricated by bending a single metal plate. A V shaped hood is affixed to the outer edges of the W shaped liner and the charge is contained between the hood and the liner. A metal box having the shape of a flat bottomed U is welded to the points of the depression in the W and in cooperation with end pieces, provides the watertight standoff volume.
Inventors
- 👤 Carl F. Austin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:46
CPC Classifications
F; F42; F42B; F42B1/00; F42B1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A linear underwater cutting device having a uniform cross section at right angles to its linear axis comprising: (a) a metallic liner which is W shaped in cross section having outer upper edges and depressions; (b) a hood member having a shape approximating that of an inverted V in cross section and having outer edges joined to the outer upper edges of said W shaped liner; (c) a box having a shape approximating that of a flat bottomed U in cross section and having upper outer edges joined to the points of the depressions of said W shaped liner; (d) a linear shaped explosive charge confined in and substantially filling the space between said W shaped linear and said hood member; and (e) means for attaching a detonating device to said underwater cutting device.
Claim 2
Dependent Claim
134 words
A linear underwater cutting device having a uniform cross section at right angles to its linear axis comprising: (a) a metallic liner which is W shaped in cross section having outer upper edges and depressions; (b) a hood member having a shape approximating that of an inverted V in cross section and having outer edges joined to the outer upper edges of said W shaped liner; (c) a box having a shape approximating that of a flat bottomed U in cross section and having upper outer edges joined to the points of the depressions of said W shaped liner; (d) a linear shaped explosive charge confined in and substantially filling the space between said W shaped linear and said hood member; and (e) means for attaching a detonating device to said underwater cutting 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) | 1983-09-16 | 1984-03-17 | 1984-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-16 | 1988-03-17 | 1988-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-16 | 1992-03-17 | 1992-09-16 | $7700.00 | Window Closed / Lapsed |