US3327133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic switching
Assignee: RCA Corp
•
Filing: 1963-05-28
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Granted: 1967-06-20
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Expires: 1983-05-28
Abstract
No abstract record available.
Inventors
- 👤 Ii Louis Sickles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:19
CPC Classifications
H; H03; H03D; H03D1/00; H03D1/14; H03D1/18; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/687; H03K17/689; H03K17/691; H03K7/00; H03K7/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
AN ELECTRONIC CHOPPER CIRCUIT COMPRISING: A SOURCE OF LOW FREQUENCY SIGNAL VOLTAGE TO BE CHOPPED, HAVING A PAIR OF TERMINALS; A LOAD ELEMENT HAVING A PAIR OF TERMINALS; MEANS FOR TRANSLATING SIGNAL VOLTAGES FROM ONE TERMINAL OF SAID SOURCE TO ONE TERMINAL OF SAID LOAD ELEMENT WITH SUBSTANTIALLY ZERO DIRECT VOLTAGE SHIFT, SAID MEANS INCLUDING A SINGLE INSULATED GATE FIELD EFFECT TRANSISTOR HAVING SOURCE, DRAIN, AND GATE ELECTRODES AND A BIDIRECTIONAL SOURCE-DRAIN CURRENT PATH OF CONTROLLABLE CONDUCTIVELY COUPLED BETWEEN SAID ONE TERMINAL OF SAID SOURCE AND SAID ONE TERMINAL OF SAID LOAD ELEMENT; MEANS CONNECTING THE OTHER OF SAID PAIR OF TERMINALS OF SAID SOURCE OF SIGNAL VOLTAGE AND SAID LOAD ELEMENT, AND MEANS COUPLED BETWEEN SAID GATE ELECTRODE AND ONE OF SAID SOURCE AND DRAIN ELECTRODES FOR SUPPLYING CHOPPING VOLTAGE SIGNALS TO SAID GATE ELECTRODE OF SUFFICIENT MAGNITUDE TO ALTERNATELY RENDER THE SOURCE-TODRAIN CURRENT PATH OF SAID TRANSISTOR CONDUCTIVE AND NON-CONDUCTIVE.
Claim 2
Dependent Claim
152 words
AN ELECTRONIC CHOPPER CIRCUIT COMPRISING: A SOURCE OF LOW FREQUENCY SIGNAL VOLTAGE TO BE CHOPPED, HAVING A PAIR OF TERMINALS; A LOAD ELEMENT HAVING A PAIR OF TERMINALS; MEANS FOR TRANSLATING SIGNAL VOLTAGES FROM ONE TERMINAL OF SAID SOURCE TO ONE TERMINAL OF SAID LOAD ELEMENT WITH SUBSTANTIALLY ZERO DIRECT VOLTAGE SHIFT, SAID MEANS INCLUDING A SINGLE INSULATED GATE FIELD EFFECT TRANSISTOR HAVING SOURCE, DRAIN, AND GATE ELECTRODES AND A BIDIRECTIONAL SOURCE-DRAIN CURRENT PATH OF CONTROLLABLE CONDUCTIVELY COUPLED BETWEEN SAID ONE TERMINAL OF SAID SOURCE AND SAID ONE TERMINAL OF SAID LOAD ELEMENT; MEANS CONNECTING THE OTHER OF SAID PAIR OF TERMINALS OF SAID SOURCE OF SIGNAL VOLTAGE AND SAID LOAD ELEMENT, AND MEANS COUPLED BETWEEN SAID GATE ELECTRODE AND ONE OF SAID SOURCE AND DRAIN ELECTRODES FOR SUPPLYING CHOPPING VOLTAGE SIGNALS TO SAID GATE ELECTRODE OF SUFFICIENT MAGNITUDE TO ALTERNATELY RENDER THE SOURCE-TODRAIN CURRENT PATH OF SAID TRANSISTOR CONDUCTIVE AND NON-CONDUCTIVE.
References Cited (Backward Citations)
US2744970A
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US2939916A
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US2900531A
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US3018391A
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US3191061A
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US3202840A
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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) | 1970-06-19 | 1970-12-19 | 1971-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-19 | 1974-12-19 | 1975-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-19 | 1978-12-19 | 1979-06-20 | $7700.00 | Window Closed / Lapsed |