US3178535A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic circuit breaker with improved bimetallic and electromagnetic trip device
Assignee: Westinghouse Electric Corp
•
Filing: 1957-04-12
•
Granted: 1965-04-13
•
Expires: 1977-04-12
Abstract
No abstract record available.
Inventors
- 👤 Francis L Gelzheiser
- 👤 Lloyd W Dyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:15
CPC Classifications
H; H01; H01H; H01H71/00; H01H71/10; H01H71/12; H01H71/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A CIRCUIT BRAKER COMPRISING RELATIVELY MOVABLE CONTACT MEANS AND MEANS RELEASABLE TO EFFECT AUTOMATIC OPENING OF SAID CONTACT MEANS, A TRIP DEVICE OPERABLE TO EFFECT RELEASE OF SAID RELEASABLE MEANS AND COMPRISING A BITMETAL ELEMENT HAVING ONE AND END SUPPORTED AND THE OTHER END MOVABLE, ELECTROMAGNET TRIP MEANS COMPRISING A U-SHAPED MAGNET YOKE HAVING ONE LEG SECURED TO THE BIMETAL ELEMENT ADJACENT THE MOVABLE END THEREOF AND THE OTHER LEG OF SAID BIMETAL YOKE EXTENDING BEYOND THE MOVABLE END OF SAID BIMETAL ELEMENT, SAID LEGS OF SAID MAGNET YOKE FORMING POLE PIECES SPACED APART LONGITUDINALLY OF SAID BIMETAL ELEMENT, AN ENERGIZING COIL SURROUNDING SAID MAGNET YOKE, AND ARMATURE MEANS ADJACENT SAID POLE PIECES TO BE ATTRACTED BY ENERGIZATION OF SAID ELECTROMAGNETIC MEANS TO MOVE TO EFFECT RELEASE OF SAID RELEASABLE MEANS.
Claim 2
Dependent Claim
131 words
A CIRCUIT BRAKER COMPRISING RELATIVELY MOVABLE CONTACT MEANS AND MEANS RELEASABLE TO EFFECT AUTOMATIC OPENING OF SAID CONTACT MEANS, A TRIP DEVICE OPERABLE TO EFFECT RELEASE OF SAID RELEASABLE MEANS AND COMPRISING A BITMETAL ELEMENT HAVING ONE AND END SUPPORTED AND THE OTHER END MOVABLE, ELECTROMAGNET TRIP MEANS COMPRISING A U-SHAPED MAGNET YOKE HAVING ONE LEG SECURED TO THE BIMETAL ELEMENT ADJACENT THE MOVABLE END THEREOF AND THE OTHER LEG OF SAID BIMETAL YOKE EXTENDING BEYOND THE MOVABLE END OF SAID BIMETAL ELEMENT, SAID LEGS OF SAID MAGNET YOKE FORMING POLE PIECES SPACED APART LONGITUDINALLY OF SAID BIMETAL ELEMENT, AN ENERGIZING COIL SURROUNDING SAID MAGNET YOKE, AND ARMATURE MEANS ADJACENT SAID POLE PIECES TO BE ATTRACTED BY ENERGIZATION OF SAID ELECTROMAGNETIC MEANS TO MOVE TO EFFECT RELEASE OF SAID RELEASABLE MEANS.
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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) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |