Patent US3353485A successfully refreshed from Google Patents.
US3353485A
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Bidirectional delay connector
Assignee: EIDP Inc
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Filing: 1965-12-29
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Granted: 1967-11-21
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Expires: 1985-12-29
Abstract
No abstract record available.
Inventors
- 👤 Ross J Miller
- 👤 Frederick C Sawyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:38
CPC Classifications
F; F42; F42D; F42D1/00; F42D1/04; F42D1/06; F42B; F42B3/00; F42B3/10; F42B3/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
IN BIDIRECTIONAL DELAY CONNECTORS COMPRISING A SHELL CONTAINING TWO DETONATING CHARGES EACH HAVING A DELAY ELEMENT ADJACENT THERETO, EACH END OF THE SHELL ADJACENT THE DETONATING CHARGES BEING ADAPTED TO RECEIVE THE END OF AN EXPLOSIVE CORD, THE IMPROVEMENT WHICH COMPRISES INTERPOSING BETWEEN THE DELAY ELEMENTS ASSOCIATED WITH SAID EACH DETONATING CHARGES, A RELAY ELEMENT COMPRISING A COLUMN OF EXPLOSIVE HAVING A LOADING OF ABOUT FROM 0.5 TO 5 GRAINS PER FOOT AND PROPAGATION VELOCITY OF AT LEAST ABOUT 300 METERS PER SECOND.
Claim 2
Dependent Claim
83 words
IN BIDIRECTIONAL DELAY CONNECTORS COMPRISING A SHELL CONTAINING TWO DETONATING CHARGES EACH HAVING A DELAY ELEMENT ADJACENT THERETO, EACH END OF THE SHELL ADJACENT THE DETONATING CHARGES BEING ADAPTED TO RECEIVE THE END OF AN EXPLOSIVE CORD, THE IMPROVEMENT WHICH COMPRISES INTERPOSING BETWEEN THE DELAY ELEMENTS ASSOCIATED WITH SAID EACH DETONATING CHARGES, A RELAY ELEMENT COMPRISING A COLUMN OF EXPLOSIVE HAVING A LOADING OF ABOUT FROM 0.5 TO 5 GRAINS PER FOOT AND PROPAGATION VELOCITY OF AT LEAST ABOUT 300 METERS PER SECOND.
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) | 1970-11-20 | 1971-05-22 | 1971-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-20 | 1975-05-22 | 1975-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-20 | 1979-05-22 | 1979-11-21 | $7700.00 | Window Closed / Lapsed |