US3289790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring charging mechanism for a circuit breaker
Assignee: Schneider Electric USA Inc
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Filing: 1965-06-16
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Granted: 1966-12-06
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Expires: 1985-06-16
Abstract
No abstract record available.
Inventors
- 👤 Herbert L Ivins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:42
CPC Classifications
H; H01; H01H; H01H3/00; H01H3/22; H01H3/30; H01H3/3005; H01H3/3015
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
IN A CHANGING MECHANISM FOR A CLOSING SPRING OF A CIRCUIT BREAKER, MEANS MOVABLE TO COMPRESS THE SPRING BY ENGAGEMENT WITH AN END THEREOF, A ROTATABLE CAM FOR MOVING SAID MOVABLE MEANS, A FIRST SHAFT FIXED TO SAID CAM FOR ROTATING SAID CAM, SECOND AND THIRD SHAFTS COAXIAL WITH SAID FIRST SHAFT, AND EXTENDING RESPECTIVELY FROM OPPOSITE ENDS THEREOF; A FIRST HELICAL SPRING MEANS SURROUNDING AT LEAST A PORTION OF EACH OF SAID FIRST AND SECOND SHAFTS AND A SECOND HELICAL SPRING MEANS SURROUNDING AT LEAST A PORTION OF EACH OF SAID FIRST AND THIRD SHAFTS, SAID FIRST SPRING MEANS BEING OPERATIVE TO PERMIT ROTATION OF SAID SECOND SHAFT WITH RESPECT TO SAID FIRST SHAFT IN ONE DIRECTION AND TO PREVENT RELATIVE ROTATION
Claim 2
Dependent Claim
123 words
IN A CHANGING MECHANISM FOR A CLOSING SPRING OF A CIRCUIT BREAKER, MEANS MOVABLE TO COMPRESS THE SPRING BY ENGAGEMENT WITH AN END THEREOF, A ROTATABLE CAM FOR MOVING SAID MOVABLE MEANS, A FIRST SHAFT FIXED TO SAID CAM FOR ROTATING SAID CAM, SECOND AND THIRD SHAFTS COAXIAL WITH SAID FIRST SHAFT, AND EXTENDING RESPECTIVELY FROM OPPOSITE ENDS THEREOF; A FIRST HELICAL SPRING MEANS SURROUNDING AT LEAST A PORTION OF EACH OF SAID FIRST AND SECOND SHAFTS AND A SECOND HELICAL SPRING MEANS SURROUNDING AT LEAST A PORTION OF EACH OF SAID FIRST AND THIRD SHAFTS, SAID FIRST SPRING MEANS BEING OPERATIVE TO PERMIT ROTATION OF SAID SECOND SHAFT WITH RESPECT TO SAID FIRST SHAFT IN ONE DIRECTION AND TO PREVENT RELATIVE ROTATION
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |