Patent US3769483A successfully refreshed from Google Patents.
Patent US3262388A successfully refreshed from Google Patents.
US3262388A
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Electric firing circuit for explosive charges
Assignee: Individual
•
Filing: 1964-04-24
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Granted: 1966-07-26
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Expires: 1984-04-24
Abstract
No abstract record available.
Inventors
- 👤 Albert M Mccarty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:29
CPC Classifications
F; F42; F42D; F42D1/00; F42D1/04; F42D1/045; F42D1/05
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
AN ELECTRIC FIRING CIRCUIT FOR SELECTIVELY FIRING A PLURALITY OF EXPLOSIVE CHARGES, COMPRISING: ACTUATOR MEANS RESPONSIVE TO A COMMAND SIGNAL FOR PRODUCING A REVERSING POLARITY D.C. VOLTAGE AT THE OUTPUT THEREOF; A PLURALITY OF PARALLEL DETONATING CIRCUITS HAVING THEIR COMMON CONNECTIONS CONNECTED TO THE OUTPUT OF SAID ACTUATOR MEANS, EACH OF SAID DETONATING CIRCUITS HAVING A DETONATING ELEMENT OPERATIVELY CONNECTED TO ONE OF THE EXPLOSIVE CHARGES; AND FRANGIBLE ARMING MEANS OPERATIVELY CONNECTED BETWEEN ADJACENT DETONATING CIRCUITS ARE IN SHUNT RELATION WITH SAID DETONATING ELEMENT, SAID FRANGIBLE ARMING MEANS PROVIDING A LOW IMPEDANCE ELECTRICAL PATH ACROSS SAID DETONATING ELEMENT.
Claim 2
Dependent Claim
98 words
AN ELECTRIC FIRING CIRCUIT FOR SELECTIVELY FIRING A PLURALITY OF EXPLOSIVE CHARGES, COMPRISING: ACTUATOR MEANS RESPONSIVE TO A COMMAND SIGNAL FOR PRODUCING A REVERSING POLARITY D.C. VOLTAGE AT THE OUTPUT THEREOF; A PLURALITY OF PARALLEL DETONATING CIRCUITS HAVING THEIR COMMON CONNECTIONS CONNECTED TO THE OUTPUT OF SAID ACTUATOR MEANS, EACH OF SAID DETONATING CIRCUITS HAVING A DETONATING ELEMENT OPERATIVELY CONNECTED TO ONE OF THE EXPLOSIVE CHARGES; AND FRANGIBLE ARMING MEANS OPERATIVELY CONNECTED BETWEEN ADJACENT DETONATING CIRCUITS ARE IN SHUNT RELATION WITH SAID DETONATING ELEMENT, SAID FRANGIBLE ARMING MEANS PROVIDING A LOW IMPEDANCE ELECTRICAL PATH ACROSS SAID DETONATING ELEMENT.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-25 | 1970-01-24 | 1970-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-25 | 1974-01-24 | 1974-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-25 | 1978-01-24 | 1978-07-26 | $7700.00 | Window Closed / Lapsed |