Patent US3244910A successfully refreshed from Google Patents.
US3244910A
Expired / Lapsed
US
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Electric switching circuit
Assignee: Bendix Corp
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Filing: 1963-04-18
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Granted: 1966-04-05
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Expires: 1983-04-18
Abstract
No abstract record available.
Inventors
- 👤 Mitchell S Leifer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:49
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/60; H03K17/66; H03K17/665; H03K17/666; H03K17/667; H03K17/04; H03K17/041; H03K17/0412; H03K17/04126
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A CURRENT SWITCHING COMPRISING IN COMBINATION A DRIVE STAGE HAVING AN INPUT PROVIDING AN OUTPUT VOLTAGE CHARACTERIZED BY TWO DISCRETE AMPLITUDE LEVELS OF DIFFERENT POLARITY; A SOURCE OF POTENTIALS; A TRANSISTOR HAVING A COLLECTOR AND AN EMITTER INTERCONNECTED WITH SAID SOURCE OF POTENTIAL AND HAVING A BASE; A CURRENT LIMITING RESISTOR CONNECTING THE BASE OF THE TRANSISTOR TO THE OUTPUT OF THE DRIVE STAGE FOR PASSING A CURRENT PROPORTIONAL TO THE OUTPUT VOLTAGE THERETHROUGH TO RENDER THE TRANSISTOR IN A SATURATION AND A CUTOFF REGION IN ACCORDANCE THEREWITH, AND A DIODE INTERCONNECTING THE BASE OF THE TRANSISTOR WITH THE SOURCE OF POTENTIAL AND BACKBIASED WHILE THE TRANSISTOR IS IN SATURATION AND FORWARD BIASED WHILE THE TRANSISTOR IS IN CUTOFF.
Claim 2
Dependent Claim
119 words
A CURRENT SWITCHING COMPRISING IN COMBINATION A DRIVE STAGE HAVING AN INPUT PROVIDING AN OUTPUT VOLTAGE CHARACTERIZED BY TWO DISCRETE AMPLITUDE LEVELS OF DIFFERENT POLARITY; A SOURCE OF POTENTIALS; A TRANSISTOR HAVING A COLLECTOR AND AN EMITTER INTERCONNECTED WITH SAID SOURCE OF POTENTIAL AND HAVING A BASE; A CURRENT LIMITING RESISTOR CONNECTING THE BASE OF THE TRANSISTOR TO THE OUTPUT OF THE DRIVE STAGE FOR PASSING A CURRENT PROPORTIONAL TO THE OUTPUT VOLTAGE THERETHROUGH TO RENDER THE TRANSISTOR IN A SATURATION AND A CUTOFF REGION IN ACCORDANCE THEREWITH, AND A DIODE INTERCONNECTING THE BASE OF THE TRANSISTOR WITH THE SOURCE OF POTENTIAL AND BACKBIASED WHILE THE TRANSISTOR IS IN SATURATION AND FORWARD BIASED WHILE THE TRANSISTOR IS IN CUTOFF.
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) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |