US3213249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit breaker with spring operating mechanism
Assignee: Westinghouse Electric Corp
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Filing: 1961-08-02
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Granted: 1965-10-19
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Expires: 1981-08-02
Abstract
No abstract record available.
Inventors
- 👤 James P Ellsworth
- 👤 Robert H Flick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:47
CPC Classifications
H; H01; H01H; H01H71/00; H01H71/10; H01H71/50; H01H71/52; H01H71/522; H01H71/524
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A CIRCUIT BREAKER COMPRISING, IN COMBINATION, A STATIONARY CONTACT, A MOVABLE CONTACT, A MOVABLE CONTACT ARM CARRYING SAID MOVABLE CONTACT AND BEING MOVABLE TO OPEN AND CLOSE SAID CONTACTS, A TRIP MEMBER HAVING A TRACK THEREON, A SPRING STRUCTURE HAVING ONE END SUPPORTED ON SAID MOVABLE CONTACT ARM AND THE OTHER END SUPPORTED ON SAID TRACK, TRIP MEANS LATCHING SAID TRIP MEMBER AND OPERATING AUTOMATICALLY UPON THE OCCURRENCE OF OVERLOAD CURRENTS ABOVE A PREDETERMINED VALUE TO RELEASE SAID TRIP MEMBER, SAID TRIP MEMBER WHEN RELEASED MOVING TO EFFECT OPENING OF SAID CONTACTS, AND SAID SPRING STRUCTURE MOVING BETWEEN TWO SPACED POINTS ON SAID TRACK TO CHANGE TO LINE OF ACTION OF SAID SPRING STRUCTURE DURING SAID AUTOMATIC OPENING OPERATION.
Claim 2
Dependent Claim
119 words
A CIRCUIT BREAKER COMPRISING, IN COMBINATION, A STATIONARY CONTACT, A MOVABLE CONTACT, A MOVABLE CONTACT ARM CARRYING SAID MOVABLE CONTACT AND BEING MOVABLE TO OPEN AND CLOSE SAID CONTACTS, A TRIP MEMBER HAVING A TRACK THEREON, A SPRING STRUCTURE HAVING ONE END SUPPORTED ON SAID MOVABLE CONTACT ARM AND THE OTHER END SUPPORTED ON SAID TRACK, TRIP MEANS LATCHING SAID TRIP MEMBER AND OPERATING AUTOMATICALLY UPON THE OCCURRENCE OF OVERLOAD CURRENTS ABOVE A PREDETERMINED VALUE TO RELEASE SAID TRIP MEMBER, SAID TRIP MEMBER WHEN RELEASED MOVING TO EFFECT OPENING OF SAID CONTACTS, AND SAID SPRING STRUCTURE MOVING BETWEEN TWO SPACED POINTS ON SAID TRACK TO CHANGE TO LINE OF ACTION OF SAID SPRING STRUCTURE DURING SAID AUTOMATIC OPENING OPERATION.
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) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |