Patent US3144536A successfully refreshed from Google Patents.
US3144536A
Expired / Lapsed
US
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Interrupter attachment for disconnect switch
Assignee: James R Kearney Corp
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Filing: 1961-03-22
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Granted: 1964-08-11
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Expires: 1981-03-22
Abstract
No abstract record available.
Inventors
- 👤 Ronald P Bridges
- 👤 Chester E Pierzchala
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:43
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/02; H01H33/04; H01H33/12; H01H3/00; H01H3/22; H01H3/30; H01H33/121; H01H33/125; H01H33/126; H01H33/70; H01H33/88; H01H33/90; H01H33/91; Y; Y10; Y10T; Y10T292/00; Y10T292/37; Y10T292/379; Y10T292/391
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
IN AN ELECTRIC SWITCH HAVING A RELATIVELY FIXED CONTACT AND A MOVABLE CONTACT ENGAGEABLE WITH AND DISENGAGEABLE FROM SAID FIXED CONTACT TO CONNECT AND DISCONNECT A HEAVY ELECTRIC LOAD RESPECTIVELY, THE COMBINATION OF MEANS FOR SUPPRESSING THE ARC FORMED DURING SWITCH OPERATION COMPRISING SEPARATE MEANS FOR FORMING CIRCUITS THROUGH SAID MOVABLE CONTACT IN SHUNT RELATION WITH SAID FIXED AND MOVABLE CONTACTS OPERATED SEQUENTIALLY TO OPEN DURING MOVEMENT OF SAID MOVABLE CONTACT FROM SAID FIXED CONTACT TO TRANSFER THE CURRENT PATH FROM SAID SWITCH TO ONE OF SAID SHUNT CIRCUITS AND FROM ONE OF SAID SHUNT CIRCUITS TO ANOTHER WITHOUT INTERRUPTION, A CIRCUIT INTERRUPTER OF THE ARC SUPPRESSING TYPE IN SAID SHUNT CIRCUIT WHICH IS LAST TO OPEN, AND MEANS TO OPERATE SAID CIRCUIT INTERRUPTER IN RESPONSE TO FURTHER OPENING MOVEMENT OF SAID MOVABLE CONTACT TO FINALLY BREAK THE CIRCUIT BETWEEN CONTACTS OF SAID SWITCH BEFORE DISENAGEMENT OF SAID MEANS IN THE SHUNT CIRCUIT LAST TO OPEN.
Claim 2
Dependent Claim
156 words
IN AN ELECTRIC SWITCH HAVING A RELATIVELY FIXED CONTACT AND A MOVABLE CONTACT ENGAGEABLE WITH AND DISENGAGEABLE FROM SAID FIXED CONTACT TO CONNECT AND DISCONNECT A HEAVY ELECTRIC LOAD RESPECTIVELY, THE COMBINATION OF MEANS FOR SUPPRESSING THE ARC FORMED DURING SWITCH OPERATION COMPRISING SEPARATE MEANS FOR FORMING CIRCUITS THROUGH SAID MOVABLE CONTACT IN SHUNT RELATION WITH SAID FIXED AND MOVABLE CONTACTS OPERATED SEQUENTIALLY TO OPEN DURING MOVEMENT OF SAID MOVABLE CONTACT FROM SAID FIXED CONTACT TO TRANSFER THE CURRENT PATH FROM SAID SWITCH TO ONE OF SAID SHUNT CIRCUITS AND FROM ONE OF SAID SHUNT CIRCUITS TO ANOTHER WITHOUT INTERRUPTION, A CIRCUIT INTERRUPTER OF THE ARC SUPPRESSING TYPE IN SAID SHUNT CIRCUIT WHICH IS LAST TO OPEN, AND MEANS TO OPERATE SAID CIRCUIT INTERRUPTER IN RESPONSE TO FURTHER OPENING MOVEMENT OF SAID MOVABLE CONTACT TO FINALLY BREAK THE CIRCUIT BETWEEN CONTACTS OF SAID SWITCH BEFORE DISENAGEMENT OF SAID MEANS IN THE SHUNT CIRCUIT LAST TO OPEN.
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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) | 1967-08-11 | 1968-02-10 | 1968-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-11 | 1972-02-10 | 1972-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-11 | 1976-02-10 | 1976-08-11 | $7700.00 | Window Closed / Lapsed |