US3179818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Time delay circuits
Assignee: Allied Control Co Inc
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Filing: 1962-10-29
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Granted: 1965-04-20
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Expires: 1982-10-29
Abstract
No abstract record available.
Inventors
- 👤 Alexander A Urban
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:20
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/72; H03K17/73
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A TIME DELAY CIRCUIT FOR APPLYING A DELAYED ENERGIZING VOLTAGE TO A LOAD, COMPRISING A PAIR OF INPUT TERMINALS ADAPTED TO BE CONNECTED TO A SOURCE OF INPUT POTENTIAL, A MULTI-ELEMENT SEMICONDUCTOR DEVICE HAVING ITS OUTPUT CURRENT CIRCUIT CONNECTED IN SERIES WITH THE LOAD ACROSS AND INPUT TERMINALS, A VOLTAGE DIVIDER CONNECTED ACROSS SAID INPUT TERMINALS, A RESISTANCE-CAPACITANCE CHARGING CIRCUIT CONNECTED BETWEEN ONE OF SAID INPUT TERMINALS AND A FIRST POINT OF SAID VOLTAGE DIVIDER, AND A CONTROLLED RECTIFIER HAVING AN ANODE, A CATHODE AND A CATHODE GATE, SAID ANODE BEING CONNECTED TO THE INPUT CURRENT CIRCUIT OF SAID SEMICONDUCTOR DEVICE, SAID CATHODE BEING CONNECTED TO A SECOND POINT OF SAID VOLTAGE DIVIDER, AND SAID CATHODE GATE BEING CONNECTED TO SAID CHARGING CIRCUIT.
Claim 2
Dependent Claim
123 words
A TIME DELAY CIRCUIT FOR APPLYING A DELAYED ENERGIZING VOLTAGE TO A LOAD, COMPRISING A PAIR OF INPUT TERMINALS ADAPTED TO BE CONNECTED TO A SOURCE OF INPUT POTENTIAL, A MULTI-ELEMENT SEMICONDUCTOR DEVICE HAVING ITS OUTPUT CURRENT CIRCUIT CONNECTED IN SERIES WITH THE LOAD ACROSS AND INPUT TERMINALS, A VOLTAGE DIVIDER CONNECTED ACROSS SAID INPUT TERMINALS, A RESISTANCE-CAPACITANCE CHARGING CIRCUIT CONNECTED BETWEEN ONE OF SAID INPUT TERMINALS AND A FIRST POINT OF SAID VOLTAGE DIVIDER, AND A CONTROLLED RECTIFIER HAVING AN ANODE, A CATHODE AND A CATHODE GATE, SAID ANODE BEING CONNECTED TO THE INPUT CURRENT CIRCUIT OF SAID SEMICONDUCTOR DEVICE, SAID CATHODE BEING CONNECTED TO A SECOND POINT OF SAID VOLTAGE DIVIDER, AND SAID CATHODE GATE BEING CONNECTED TO SAID CHARGING CIRCUIT.
References Cited (Backward Citations)
US2548818A
Cited
US3049632A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |