US3138676A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure operated circuit-breaker actuating systems
Assignee: Individual
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Filing: 1960-11-14
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Granted: 1964-06-23
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Expires: 1980-11-14
Abstract
No abstract record available.
Inventors
- 👤 Gratzmuller Jean Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:59
CPC Classifications
H; H01; H01H; H01H3/00; H01H3/22; H01H3/30; H01H3/32; H01H3/40; H01H33/00; H01H33/02; H01H33/28; H01H33/30; H01H33/34; H01H3/3052; H01H33/04; H01H33/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
ACTUATING SYSTEM FOR AN ELECTRIC CIRCUIT-BREAKER HAVING A LINEARLY MOVABLE CONTACT MEMBER, SAID SYSTEM COMPRISING A SINGLE ACTING FLUID PRESSURE ACTUATOR EMBODING ELASTIC RETURN MEANS WITH THE CIRCUIT-MAKING STROKE OF THE ACTUATOR BEING EFFECTED BY FEEDING FLUID THERETO AND THE CIRCUIT-BREAKING STROKE BEING EFFECTED BY SAID ELASTIC RETURN MEANS, A STRAIGHT, TOOTHED RACK ACTUATED THEREBY, A TOOTHED PINION ROTATABLE BY SAID RACK THROUGH ABOUT HALF A REVOLUTION, A CRANK FAST ON SAID PINION AND A PIN-JOINTED LINK INTERCONNECTING SAID CRANK AND SAID CONTACT MEMBER SO DISPOSED THAT THE CRANK-LINK COMBINATION INCLUDES TWO DEAD CENTER POSITIONS ADJACENT RESPECTIVELY TO ONE AND THE OTHER EXTREME POSITION OF SAID CRANK, AND MEANS FOR DAMPING THE MOVEMENT OF THE RACK, WITH SAID DAMPING MEANS BEING OPERATIVE ONLY OVER A FINAL FRACTION OF THE STROKE OF THE RACK IN EACH DIRECTION.
Claim 2
Dependent Claim
136 words
ACTUATING SYSTEM FOR AN ELECTRIC CIRCUIT-BREAKER HAVING A LINEARLY MOVABLE CONTACT MEMBER, SAID SYSTEM COMPRISING A SINGLE ACTING FLUID PRESSURE ACTUATOR EMBODING ELASTIC RETURN MEANS WITH THE CIRCUIT-MAKING STROKE OF THE ACTUATOR BEING EFFECTED BY FEEDING FLUID THERETO AND THE CIRCUIT-BREAKING STROKE BEING EFFECTED BY SAID ELASTIC RETURN MEANS, A STRAIGHT, TOOTHED RACK ACTUATED THEREBY, A TOOTHED PINION ROTATABLE BY SAID RACK THROUGH ABOUT HALF A REVOLUTION, A CRANK FAST ON SAID PINION AND A PIN-JOINTED LINK INTERCONNECTING SAID CRANK AND SAID CONTACT MEMBER SO DISPOSED THAT THE CRANK-LINK COMBINATION INCLUDES TWO DEAD CENTER POSITIONS ADJACENT RESPECTIVELY TO ONE AND THE OTHER EXTREME POSITION OF SAID CRANK, AND MEANS FOR DAMPING THE MOVEMENT OF THE RACK, WITH SAID DAMPING MEANS BEING OPERATIVE ONLY OVER A FINAL FRACTION OF THE STROKE OF THE RACK IN EACH DIRECTION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |