Patent US3605777A successfully refreshed from Google Patents.
US3605777A
Expired / Lapsed
US
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Closure mechanism
Assignee: United States Atomic Energy Commission
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Filing: 1970-05-11
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Granted: 1971-09-20
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Expires: 1990-05-11
Abstract
Abstract APPARATUS FOR RAPIDLY CLOSING A CONDUIT BY PINCHING OFF WITH AN EXPLOSIVE UTILIZING A TAPERED EXPLOSIVE COLLAR ABOUT A TAPERING WALL WITH A TAMPER FOR DIRECTING EXPLOSIVE ENERGY AGAINST THE TAPERING WALL, AND SIMULTANEOUSLY IGNITING THE EXPLOSIVE COLLAR ABOUT ITS CIRCUMFERENCE.
Inventors
- 👤 George G Curry
- 👤 John C Dresser
- 👤 James A Moeller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:34
CPC Classifications
F; F16; F16K; F16K7/00; F16K7/02; F16K7/04; Y; Y10; Y10T; Y10T137/00; Y10T137/1624; Y10T29/00; Y10T29/49; Y10T29/49805; Y10T29/49806
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |