US3990344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Underwater expendable explosive link
Assignee: United States Department of the Navy
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Filing: 1975-01-13
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Granted: 1976-11-09
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Expires: 1995-01-13
Abstract
Abstract An explosive disconnect joins two portions of an underwater cable and an ctrical conductor extends from a squib to a remote detonator. The squib and conductor are cast inside a plug of epoxy or equivalent frangible material. Holes bored at opposite ends of the plug receive the two portions of the cable, for example, an anchor line and a buoy line. When the squib is detonated, the frangible plug disintegrates and an instrumentation package is buoyed to the surface for recovery. The nonmetallic explosive disconnect is waterproof, is corrosion resistent and is relatively inexpensive compared to other commercially available units.
Inventors
- 👤 Charles E. Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:23
CPC Classifications
F; F42; F42B; F42B3/00; F42B3/006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
In an underwater explosive disconnect for holding a spring biased cap on a dye can an improvement therefor is provided comprising: a pair of squibs; a conductor of electromagnetic energy connected to said pair of squibs for initiating the detonation thereof; and an epoxy casting formed in two sections shaped as an annular collar having a generally U-shaped cross-sectional configuration for retaining the spring biased cap on the dye can for frangibly containing said pair of squibs at opposite diametric extremes of said annular collar and being molded thereabout, upon said detonation, the annular collar shatters effecting the release of the cap.
Claim 2
Dependent Claim
102 words
In an underwater explosive disconnect for holding a spring biased cap on a dye can an improvement therefor is provided comprising: a pair of squibs; a conductor of electromagnetic energy connected to said pair of squibs for initiating the detonation thereof; and an epoxy casting formed in two sections shaped as an annular collar having a generally U-shaped cross-sectional configuration for retaining the spring biased cap on the dye can for frangibly containing said pair of squibs at opposite diametric extremes of said annular collar and being molded thereabout, upon said detonation, the annular collar shatters effecting the release of the cap.
References Cited (Backward Citations)
US2379447A
Cited
US2809584A
Cited
US2937595A
Cited
US3104523A
Cited
US3791296A
Cited
US3089417A
Cited
US3384016A
Cited
US3458217A
Cited
US3728934A
Cited
US3698281A
Cited
US3757988A
Cited
US3688988A
Cited
US3919939A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-11-09 | 1980-05-10 | 1980-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-09 | 1984-05-10 | 1984-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-09 | 1988-05-10 | 1988-11-09 | $7700.00 | Window Closed / Lapsed |