Patent FR1240398A successfully refreshed from Google Patents.
US3303386A
Expired / Lapsed
US
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Transient overvoltage and overload protection circuit
Assignee: Motors Liquidation Co
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Filing: 1963-05-07
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Granted: 1967-02-07
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Expires: 1983-05-07
Abstract
No abstract record available.
Inventors
- 👤 Joseph E Murphy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:01
CPC Classifications
H; H02; H02H; H02H3/00; H02H3/08; H02H3/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A CIRCUIT PROVIDING BOTH OVERVOLTAGE AND OVERLOAD PROTECTION, SAID CIRCUIT COMPRISING A PAIR OF INPUT TERMINALS FOR CONNECTION TO A VOLTAGE SOURCE AND A PAIR OF OUTPUT TERMINALS FOR CONNECTION TO A LOAD, SWITCHING MEANS CONNECTED BETWEEN ONE INPUT TERMINAL AND ONE OUTPUT TERMINAL, SWITCH OPERATING MEANS INCLUDING A VOLTAGE REFERENCE DEVICE CONNECTED ACROSS SAID INPUT TERMINALS, SERIES MEANS CONNECTING SAID VOLTAGE REFERENCE DEVICE WITH SAID LOAD, SAID VOLTAGE REFERENCE DEVICE ADAPTED TO BECOME CONDUCTIVE UPON EITHER A PREDETERMINED OVERVOLTAGE OR A PREDETERMINED OVERLOAD TO RENDER SAID SWITCH OPERATING MEANS OPERATIVE TO CHANGE THE STATE OF SAID SWITCHING MEANS AND DISCONNECT SAID SOURCE FROM SAID LOAD.
Claim 2
Dependent Claim
106 words
A CIRCUIT PROVIDING BOTH OVERVOLTAGE AND OVERLOAD PROTECTION, SAID CIRCUIT COMPRISING A PAIR OF INPUT TERMINALS FOR CONNECTION TO A VOLTAGE SOURCE AND A PAIR OF OUTPUT TERMINALS FOR CONNECTION TO A LOAD, SWITCHING MEANS CONNECTED BETWEEN ONE INPUT TERMINAL AND ONE OUTPUT TERMINAL, SWITCH OPERATING MEANS INCLUDING A VOLTAGE REFERENCE DEVICE CONNECTED ACROSS SAID INPUT TERMINALS, SERIES MEANS CONNECTING SAID VOLTAGE REFERENCE DEVICE WITH SAID LOAD, SAID VOLTAGE REFERENCE DEVICE ADAPTED TO BECOME CONDUCTIVE UPON EITHER A PREDETERMINED OVERVOLTAGE OR A PREDETERMINED OVERLOAD TO RENDER SAID SWITCH OPERATING MEANS OPERATIVE TO CHANGE THE STATE OF SAID SWITCHING MEANS AND DISCONNECT SAID SOURCE FROM SAID LOAD.
References Cited (Backward Citations)
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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) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |