US3376429A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Time delay circuit
Assignee: Studebaker Worthington Inc
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Filing: 1965-06-04
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Granted: 1968-04-02
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Expires: 1985-06-04
Abstract
No abstract record available.
Inventors
- 👤 Carl E Atkins
- 👤 Robert L Ziolkowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:58
CPC Classifications
H; H01; H01H; H01H47/00; H01H47/02; H01H47/18; H03; H03K; H03K17/00; H03K17/28; H05; H05B; H05B47/00; H05B47/10; H05B47/16; Y; Y02; Y02B; Y02B20/00; Y02B20/40
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
137 words
A TIME DELAY CIRCUIT COMPRISING IN COMBINATION A DIRECT CURRENT SOURCE OF ENERGY, A UNIDIRECTIONAL CURRENT ELEMENT, A CAPACITOR, AN IMPEDANCE AND A SIGNAL DEVICE CONNECTED IN SERIES ACROSS SAID SOURCE FOR CHARGING SAID CAPACITOR, A HIGH RESISTOR CONNECTED BETWEEN THE JUNCTION OF SAID SIGNAL DEVICE WITH SAID IMPEDANCE AND THE JUNCTION OF SAID UNIDIRECTIONAL ELEMENT AND CAPACITOR FOR PROVIDING A PATH FOR SLOW DISCHARGE OF SAID CAPACITOR, A SEMICONDUCTOR REGENERATIVE CIRCUIT CONNECTED IN PARALLEL WITH SAID IMPEDANCE AND HAVING A CONTROL ELECTRODE CONNECTED TO THE JUNCTION OF SAID HIGH RESISTOR AND CAPACITOR FOR PREVENTING CONDUCTION BY SAID SEMICONDUCTOR CIRCUIT WHEN THE CHARGE IN SAID CAPACITOR IS ABOVE A PREDETERMINED VALUE, AND SWITCH MEANS FOR SHUNTING SAID UNIDIRECTIONAL ELEMENT AND CAPACITOR TO INITIATE DISCHARGE OF SAID CAPACITOR AND EVENTUAL SHUNTING OF SAID IMPEDANCE BY SAID REGENERATIVE CIRCUIT.
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) | 1971-04-02 | 1971-10-02 | 1972-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-02 | 1975-10-02 | 1976-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-02 | 1979-10-02 | 1980-04-02 | $7700.00 | Window Closed / Lapsed |