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Patent US3113246A successfully refreshed from Google Patents.
US3113246A
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Repeating circuit interrupters
Assignee: McGraw Edison Co
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Filing: 1960-02-16
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Granted: 1963-12-03
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Expires: 1980-02-16
Abstract
No abstract record available.
Inventors
- 👤 Rigert Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:22
CPC Classifications
H; H01; H01H; H01H75/00; H01H75/02; H01H75/04; H02; H02H; H02H3/00; H02H3/02; H02H3/06; H02H3/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A REPEATING CIRCUIT INTERRUPTER FOR PROTECTING AN ELECTRICAL SYSTEM HAVING SWITCH MEANS AND OVER-CURRENT RESPONSIVE MEANS IN CIRCUIT WITH SAID SYSTEM AND OPERATIVE TO OPEN THE SAME UPON THE OCCURRENCE OF AN OVERCURRENT, TIME DELAY MEANS CONNECTED TO SAID SWITCH MEANS FOR DELAYING THE OPENING THEREOF, RECLOSING MEANS CONNECTED TO SAID SWITCH MEANS FOR RECLOSING THE SAME AFTER AN OPENING OPERATION, DIRECTIONAL CURRENT RESPONSIVE MEANS IN CIRCUIT WITH SAID SYSTEM AND CONNECTED TO SAID TIME DELAY MEANS AND OPERABLE UPON THE OCCURRENCE OF AN OVER-CURRENT IN A FIRST DIRECTION TO MODIFY THE OPERATION OF SAID TIME DELAY MEANS SO THAT THE OPENING TIME OF SWITCH MEANS IS ALTERED, SAID DIRECTIONAL CURRENT RESPONSIVE MEANS BEING INEFFECTIVE TO MODIFY SAID TIME DELAY MEANS WHEN AN OVER-CURRENT FLOWS IN THE OPPOSITE DIRECTION.
Claim 2
Dependent Claim
129 words
A REPEATING CIRCUIT INTERRUPTER FOR PROTECTING AN ELECTRICAL SYSTEM HAVING SWITCH MEANS AND OVER-CURRENT RESPONSIVE MEANS IN CIRCUIT WITH SAID SYSTEM AND OPERATIVE TO OPEN THE SAME UPON THE OCCURRENCE OF AN OVERCURRENT, TIME DELAY MEANS CONNECTED TO SAID SWITCH MEANS FOR DELAYING THE OPENING THEREOF, RECLOSING MEANS CONNECTED TO SAID SWITCH MEANS FOR RECLOSING THE SAME AFTER AN OPENING OPERATION, DIRECTIONAL CURRENT RESPONSIVE MEANS IN CIRCUIT WITH SAID SYSTEM AND CONNECTED TO SAID TIME DELAY MEANS AND OPERABLE UPON THE OCCURRENCE OF AN OVER-CURRENT IN A FIRST DIRECTION TO MODIFY THE OPERATION OF SAID TIME DELAY MEANS SO THAT THE OPENING TIME OF SWITCH MEANS IS ALTERED, SAID DIRECTIONAL CURRENT RESPONSIVE MEANS BEING INEFFECTIVE TO MODIFY SAID TIME DELAY MEANS WHEN AN OVER-CURRENT FLOWS IN THE OPPOSITE DIRECTION.
References Cited (Backward Citations)
US2734961A
Cited
US688359A
Cited
US869359A
Cited
US863791A
Cited
US1669149A
Cited
US1994921A
Cited
US2337837A
Cited
US2336836A
Cited
US2528194A
Cited
US2545368A
Cited
US2700081A
Cited
US2752536A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-02 | 1967-06-03 | 1967-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-02 | 1971-06-03 | 1971-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-02 | 1975-06-03 | 1975-12-03 | $7700.00 | Window Closed / Lapsed |