US3275855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power control circuits
Assignee: ZF International UK Ltd
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Filing: 1963-09-09
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Granted: 1966-09-27
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Expires: 1983-09-09
Abstract
No abstract record available.
Inventors
- 👤 Wright Maurice James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:59
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/72; H03K17/73; Y; Y10; Y10S; Y10S315/00; Y10S315/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A POWER CONTROL CIRCUIT COMPRISING IN COMBINATION A PAIR OF TERMINALS FOR CONNECTION TO A D.C. SOURCE, A SWITCHABLE RECTIFIER HAVING ITS ANODE AND CATHODE CONNECTED TO THE PAIR OF TERMINALS RESPECTIVELY, A LOAD IN THE CATHODE CIRCUIT OF THE SWITCHABLE RECTIFIER, A CAPACITOR DISCHARGING OF WHICH EFFECTS SWITCHING ON AND OFF OF THE SWITCHABLE RECTIFIER, SWITCH MEANS FOR CONTROLLING CHARGING OF SAID CAPACITOR, SAID SWITCH MEANS BEING CONNECTIBLE ALTERNATIVELY TO SAID PAIR OF TERMINALS AND BEING CONNECTED TO THE CATHODE OF SAID SWITCHABLE RECTIFIER THROUGH SAID CAPACITOR, AND A TRIGGER DEVICE THROUGH WHICH SAID SWITCH MEANS IS CONNECTED TO THE GATE OF SAID SWITCHABLE RECTIFIER.
Claim 2
Dependent Claim
106 words
A POWER CONTROL CIRCUIT COMPRISING IN COMBINATION A PAIR OF TERMINALS FOR CONNECTION TO A D.C. SOURCE, A SWITCHABLE RECTIFIER HAVING ITS ANODE AND CATHODE CONNECTED TO THE PAIR OF TERMINALS RESPECTIVELY, A LOAD IN THE CATHODE CIRCUIT OF THE SWITCHABLE RECTIFIER, A CAPACITOR DISCHARGING OF WHICH EFFECTS SWITCHING ON AND OFF OF THE SWITCHABLE RECTIFIER, SWITCH MEANS FOR CONTROLLING CHARGING OF SAID CAPACITOR, SAID SWITCH MEANS BEING CONNECTIBLE ALTERNATIVELY TO SAID PAIR OF TERMINALS AND BEING CONNECTED TO THE CATHODE OF SAID SWITCHABLE RECTIFIER THROUGH SAID CAPACITOR, AND A TRIGGER DEVICE THROUGH WHICH SAID SWITCH MEANS IS CONNECTED TO THE GATE OF SAID SWITCHABLE RECTIFIER.
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) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |