US3331967A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Time delay circuit employing scr controlled by timing-capacitor having plural current paths for total discharging thereof
Assignee: AMF Inc
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Filing: 1963-05-31
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Granted: 1967-07-18
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Expires: 1983-05-31
Abstract
No abstract record available.
Inventors
- 👤 Thomas W Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:41
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/35; H03K3/351
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
IN A TIME DELAY CIRCUIT OF THE TYPE INCLUDING A TIMER CIRCUIT FOR CONTROLLING A SEMICONDUCTOR SWITCHING DEVICE, THE COMBINATION OF A SEMICONDUCTOR DIODE; A ZENER DIODE; FIRST CIRCUIT MEANS CONNECTING SAID DIODES IN SERIES FOR CONDUCTION THROUGH SAID ZENER DIODE IN THE REVERSE DIRECTION ACROSS SAID SWITCHING DEVICE TO PROVIDE A FIXED POTENTIAL TO SAID TIMER CIRCUIT WHEN SAID SWITCHING DEVICE IS NONCONDUCTIVE; AND SECOND CIRCUIT MEANS FOR CONNECTING SAID DIODES IN PARALLEL WITH ONE ANOTHER FOR CONDUCTION THROUGH
Claim 2
Dependent Claim
80 words
IN A TIME DELAY CIRCUIT OF THE TYPE INCLUDING A TIMER CIRCUIT FOR CONTROLLING A SEMICONDUCTOR SWITCHING DEVICE, THE COMBINATION OF A SEMICONDUCTOR DIODE; A ZENER DIODE; FIRST CIRCUIT MEANS CONNECTING SAID DIODES IN SERIES FOR CONDUCTION THROUGH SAID ZENER DIODE IN THE REVERSE DIRECTION ACROSS SAID SWITCHING DEVICE TO PROVIDE A FIXED POTENTIAL TO SAID TIMER CIRCUIT WHEN SAID SWITCHING DEVICE IS NONCONDUCTIVE; AND SECOND CIRCUIT MEANS FOR CONNECTING SAID DIODES IN PARALLEL WITH ONE ANOTHER FOR CONDUCTION THROUGH
References Cited (Backward Citations)
US3244965A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |