US3258689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for sensing the onset of radical noise of carbon bridge electro-explosive devices by utilizing drive signal cutoff means
Assignee: Individual
•
Filing: 1963-08-29
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Granted: 1966-06-28
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Expires: 1983-08-29
Abstract
No abstract record available.
Inventors
- 👤 David G Ressler
- 👤 James N Ayres
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:01
CPC Classifications
F; F42; F42B; F42B3/00; F42B3/10; F42B3/195; F42B3/198
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A METHOD FOR NONDESTRUCTIVELY TESTING THE FIRING SENSITIVITY OF A CARBON BRIDGE ELECTRO-EXPLOSIVE DEVICE HAVING A NEGATIVE RESISTANCE REGION OF ITS CURRENT VOLTAGE CHARACTERISTICS COMPRISING THE STEPS OF APPLYING A PREDETERMINED DRIVING SIGNAL TO SAID DEVICE, SENSING THE ONSET OF RADICAL NOIXE IN SAID DEVICE DUE TO THE RADICAL RESISTANCE VARIATION WHEN SAID DRIVING SIGNAL REACHES THE NEGATIVE RESISTANCE REGION OF THE CURRENT VOLTAGE CHARACTERISTIC OF SAID DEVICE, MEASURING THE DRIVING SIGNAL AMPLITUDE AT SAID ONSET POINT OF RADICAL NOISE TO ESTABLISH THE FIRING SENSITIVITY OF SAID DEVICE, AND INTERRUPTING SAID DRIVING SIGNAL AT SAID ONSET POINT TO PREVENT FIRING OF SAID DEVICE WHILE ESTABLISHING THE ELECTRICAL FIRING SENSITIVITY THEREOF.
Claim 2
Independent Claim
110 words
A METHOD FOR NONDESTRUCTIVELY TESTING THE FIRING SENSITIVITY OF A CARBON BRIDGE ELECTRO-EXPLOSIVE DEVICE HAVING A NEGATIVE RESISTANCE REGION OF ITS CURRENT VOLTAGE CHARACTERISTICS COMPRISING THE STEPS OF APPLYING A PREDETERMINED DRIVING SIGNAL TO SAID DEVICE, SENSING THE ONSET OF RADICAL NOIXE IN SAID DEVICE DUE TO THE RADICAL RESISTANCE VARIATION WHEN SAID DRIVING SIGNAL REACHES THE NEGATIVE RESISTANCE REGION OF THE CURRENT VOLTAGE CHARACTERISTIC OF SAID DEVICE, MEASURING THE DRIVING SIGNAL AMPLITUDE AT SAID ONSET POINT OF RADICAL NOISE TO ESTABLISH THE FIRING SENSITIVITY OF SAID DEVICE, AND INTERRUPTING SAID DRIVING SIGNAL AT SAID ONSET POINT TO PREVENT FIRING OF SAID DEVICE WHILE ESTABLISHING THE ELECTRICAL FIRING SENSITIVITY THEREOF.
References Cited (Backward Citations)
US2891217A
Cited
US3134073A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |