Patent US3211877A successfully refreshed from Google Patents.
US3211877A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit breaker with sealing means for handle opening
Assignee: Westinghouse Electric Corp
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Filing: 1963-06-07
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Granted: 1965-10-12
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Expires: 1983-06-07
Abstract
No abstract record available.
Inventors
- 👤 Eugene J Walker
- 👤 Zipay John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:40
CPC Classifications
H; H01; H01H; H01H71/00; H01H71/10; H01H71/50; H01H71/52; H01H71/521
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A CIRCUIT BREAKER COMPRISING AN INSULATING HOUSING HAVING AN OPENING AT THE FRONT THEREOF, A CIRCUIT-BREAKER MECHANISM DISPOSED WITHIN SAID HOUSING COMPRISING MEANS A PAIR OF CONTACTS, SAID MECHANISM COMPRISING MEANS OPERATING AUTOMATICALLY UPON THE OCCURRENCE OF A CERTAIN OVERLOAD CURRENT CONDITIONS TO EFFECT OPENING OF SAID CONTACTS, A HANDLE-STRUCTURE COMPRISING A SHIELD SUPPORTED WITHIN SAID HOUSING AND A HANDLE EXTENDING THROUGH SAID OPENING, SAID HANDLE STRUCTURE BEING MOVABLE BETWEEN TWO POSITIONS TO OPEN AND CLOSE SAID CONTACTS, SAID SHIELD CLOSING SAID OPENING IN ALL POSITIONS OF SAID HANDLE STRUCTURE, COMPRESSIBLE SEALING MEANS, MEANS BIASING SAID SHIELD TOWARD THE INTERNAL SURFACE OF THE FRONT OF SAID HOUSING AND COMPRESSING SAID SEALING MEANS BETWEEN SAID SHIELD AND SAID INTERNAL SURFACE TO SEAL SAID OPENING.
Claim 2
Dependent Claim
123 words
A CIRCUIT BREAKER COMPRISING AN INSULATING HOUSING HAVING AN OPENING AT THE FRONT THEREOF, A CIRCUIT-BREAKER MECHANISM DISPOSED WITHIN SAID HOUSING COMPRISING MEANS A PAIR OF CONTACTS, SAID MECHANISM COMPRISING MEANS OPERATING AUTOMATICALLY UPON THE OCCURRENCE OF A CERTAIN OVERLOAD CURRENT CONDITIONS TO EFFECT OPENING OF SAID CONTACTS, A HANDLE-STRUCTURE COMPRISING A SHIELD SUPPORTED WITHIN SAID HOUSING AND A HANDLE EXTENDING THROUGH SAID OPENING, SAID HANDLE STRUCTURE BEING MOVABLE BETWEEN TWO POSITIONS TO OPEN AND CLOSE SAID CONTACTS, SAID SHIELD CLOSING SAID OPENING IN ALL POSITIONS OF SAID HANDLE STRUCTURE, COMPRESSIBLE SEALING MEANS, MEANS BIASING SAID SHIELD TOWARD THE INTERNAL SURFACE OF THE FRONT OF SAID HOUSING AND COMPRESSING SAID SEALING MEANS BETWEEN SAID SHIELD AND SAID INTERNAL SURFACE TO SEAL SAID OPENING.
References Cited (Backward Citations)
US2878347A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |