Patent US3301183A successfully refreshed from Google Patents.
US3301183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safe-arm mechanism for explosive trains
Assignee: EIDP Inc
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Filing: 1965-06-30
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Granted: 1967-01-31
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Expires: 1985-06-30
Abstract
No abstract record available.
Inventors
- 👤 Hennessy James
- 👤 George A Noddin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:46
CPC Classifications
F; F42; F42B; F42B3/00; F42B3/10; F42C; F42C3/00; F42D; F42D1/00; F42D1/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
AN ARMING SYSTEM COMPRISING A DONOR CHARGE, AN ACCEPTOR CHARGE SEPARATED FROM THE DONOR CHARGE BY DISTANCE SUFFICIENT TO PRECLUDE SYMPATHETIC ACTUATION OF THE ACCEPTOR CHARGE BY A DETONATION STIMULUS FROM THE DONOR CHARGE, AND A SAFE-ARM MECHANISM CONNECTING SAID CHARGES, SAID SAFE-ARM MECHANISM COMPRISING AN EXPOSED HELIX OF 3 TO 10 TIGHTLY COILED TURNS OF LOW-ENERGY CONNECTING CORD HAVING A CORE OF HIGH VELOCITY, CAP-SENSITIVE DETONATING EXPLOSIVE AT A LOADING OF ABOUT FROM 1.5 TO 2.2 GRAINS PER FOOT ENCASED IN A DUCTILE METAL SHEATH, SAID HELIX BEING CHARACTERIZED BY ITS ABILITY TO PROPAGATE A DETONATION STIMULUS WHEN SURROUNDED BY A LIQUID MEDIUM AND ITS INABILITY TO PROPAGATE SUCH A STIMULUS WHEN SURROUNDED BY A GASEOUS MEDIUM.
Claim 2
Dependent Claim
118 words
AN ARMING SYSTEM COMPRISING A DONOR CHARGE, AN ACCEPTOR CHARGE SEPARATED FROM THE DONOR CHARGE BY DISTANCE SUFFICIENT TO PRECLUDE SYMPATHETIC ACTUATION OF THE ACCEPTOR CHARGE BY A DETONATION STIMULUS FROM THE DONOR CHARGE, AND A SAFE-ARM MECHANISM CONNECTING SAID CHARGES, SAID SAFE-ARM MECHANISM COMPRISING AN EXPOSED HELIX OF 3 TO 10 TIGHTLY COILED TURNS OF LOW-ENERGY CONNECTING CORD HAVING A CORE OF HIGH VELOCITY, CAP-SENSITIVE DETONATING EXPLOSIVE AT A LOADING OF ABOUT FROM 1.5 TO 2.2 GRAINS PER FOOT ENCASED IN A DUCTILE METAL SHEATH, SAID HELIX BEING CHARACTERIZED BY ITS ABILITY TO PROPAGATE A DETONATION STIMULUS WHEN SURROUNDED BY A LIQUID MEDIUM AND ITS INABILITY TO PROPAGATE SUCH A STIMULUS WHEN SURROUNDED BY A GASEOUS MEDIUM.
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) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |