US3120635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Short circuit protector for transistorized circuits
Assignee: Teledyne Ryan Aeronautical Corp
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Filing: 1960-09-19
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Granted: 1964-02-04
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Expires: 1980-09-19
Abstract
No abstract record available.
Inventors
- 👤 Jr John W Tully
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:47
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/46; G05F1/56; G05F1/565; G05F1/569; G05F1/573
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
THE COMBINATION COMPRISING: A SOURCE OF POTENTIAL; A LOAD; A CONTROL TRANSISTOR HAVING A BASE ELECTRODE, AN EMITTER ELECTRODE AND A COLLECTOR ELECTRODE; MEANS FOR BIASING SAID BASE ELECTRODE; MEANS FOR CONNECTING THE COLLECTOR EMITTER CIRCUIT OF SAID TRANSISTOR IN SERIES BETWEEN SAID SOURCE AND SAID LOAD; MEANS FOR SENSING THE POTENTIAL CHANGES AT SAID LOAD, SAID MEANS COMPRISING A VOLTAGE DIVIDER CONNECTED ACROSS SAID LOAD AND A SENSING TRANSISTOR HAVING A BASE ELECTRODE, AN EMITTER ELECTRODE AND A COLLECTOR ELECTRODE; A CONNECTION BETWEEN SAID BASE ELECTRODE OF SAID SENSING TRANSISTOR AND A POINT ON SAID VOLTAGE DIVIDER; MEANS FOR BIASING SAID EMITTER ELECTRODE OF SAID SENSING TRANSISTOR, SAID BIASING MEANS COMPRISING A VOLTAGE DIVIDER CONNECTED ACROSS SAID LOAD, SAID VOLTAGE DIVIDER COMPRISING A RESISTANCE AND A DIODE AND A CONNECTION BETWEEN SAID EMITTER ELECTRODE OF SAID SENSING TRANSISTOR AND THE JUNCTION OF SAID RESISTANCE AND DIODE; MEANS FOR CAUSING SAID SENSING TRANSISTOR TO VARY THE POTENTIAL AT SAID BASE ELECTRODE OF SAID CONTROL TRANSISTOR
Claim 2
Dependent Claim
165 words
THE COMBINATION COMPRISING: A SOURCE OF POTENTIAL; A LOAD; A CONTROL TRANSISTOR HAVING A BASE ELECTRODE, AN EMITTER ELECTRODE AND A COLLECTOR ELECTRODE; MEANS FOR BIASING SAID BASE ELECTRODE; MEANS FOR CONNECTING THE COLLECTOR EMITTER CIRCUIT OF SAID TRANSISTOR IN SERIES BETWEEN SAID SOURCE AND SAID LOAD; MEANS FOR SENSING THE POTENTIAL CHANGES AT SAID LOAD, SAID MEANS COMPRISING A VOLTAGE DIVIDER CONNECTED ACROSS SAID LOAD AND A SENSING TRANSISTOR HAVING A BASE ELECTRODE, AN EMITTER ELECTRODE AND A COLLECTOR ELECTRODE; A CONNECTION BETWEEN SAID BASE ELECTRODE OF SAID SENSING TRANSISTOR AND A POINT ON SAID VOLTAGE DIVIDER; MEANS FOR BIASING SAID EMITTER ELECTRODE OF SAID SENSING TRANSISTOR, SAID BIASING MEANS COMPRISING A VOLTAGE DIVIDER CONNECTED ACROSS SAID LOAD, SAID VOLTAGE DIVIDER COMPRISING A RESISTANCE AND A DIODE AND A CONNECTION BETWEEN SAID EMITTER ELECTRODE OF SAID SENSING TRANSISTOR AND THE JUNCTION OF SAID RESISTANCE AND DIODE; MEANS FOR CAUSING SAID SENSING TRANSISTOR TO VARY THE POTENTIAL AT SAID BASE ELECTRODE OF SAID CONTROL TRANSISTOR
References Cited (Backward Citations)
US2832900A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-02-03 | 1967-08-05 | 1968-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-03 | 1971-08-05 | 1972-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-03 | 1975-08-05 | 1976-02-04 | $7700.00 | Window Closed / Lapsed |