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Patent US3214642A successfully refreshed from Google Patents.
US3214642A
Expired / Lapsed
US
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Antipumping control system
Assignee: Allis Chalmers Corp
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Filing: 1962-08-02
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Granted: 1965-10-26
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Expires: 1982-08-02
Abstract
No abstract record available.
Inventors
- 👤 Baude John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:30
CPC Classifications
H; H02; H02H; H02H7/00; H02H7/22; H02H7/222; H02H7/224
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A CONTROL SYSTEM FOR ENERGIZING A CLOSING DEVICE FOR A CIRCUIT BREAKER COMPRISING: SEMICONDUCTOR SWITCHING MEANS CONNECTED BETWEEN AN ELECTRICAL ENERGY SOURCE AND THE CLOSING DEVICE FOR ENERGIZING THE CLOSING DEVICE WHEN TURNED ON; A SWITCHING DEVICE CONNECTED IN A CIRCUIT WITH A CONTROL POWER SOURCE AND THE SEMICONDUCTOR SWITCHING MEANS; CONTROL MEANS CONNECTED IN THE CIRCUIT OF THE CONTROL POWER SOURCE AND THE SWITCHING DEVICE RESPONSIVE TO THE CLOSING OF THE SWITCHING DEVICE FOR TURNING ON THE SEMICONDUCTOR SWITCHING MEANS UPON CLOSING OF THE SWITCHING DEVICE FOR A DURATION SUFFICIENT TO OPERATE THE CLOSING DEVICE, AND FOR KEEPING THE SEMI-
Claim 2
Dependent Claim
101 words
A CONTROL SYSTEM FOR ENERGIZING A CLOSING DEVICE FOR A CIRCUIT BREAKER COMPRISING: SEMICONDUCTOR SWITCHING MEANS CONNECTED BETWEEN AN ELECTRICAL ENERGY SOURCE AND THE CLOSING DEVICE FOR ENERGIZING THE CLOSING DEVICE WHEN TURNED ON; A SWITCHING DEVICE CONNECTED IN A CIRCUIT WITH A CONTROL POWER SOURCE AND THE SEMICONDUCTOR SWITCHING MEANS; CONTROL MEANS CONNECTED IN THE CIRCUIT OF THE CONTROL POWER SOURCE AND THE SWITCHING DEVICE RESPONSIVE TO THE CLOSING OF THE SWITCHING DEVICE FOR TURNING ON THE SEMICONDUCTOR SWITCHING MEANS UPON CLOSING OF THE SWITCHING DEVICE FOR A DURATION SUFFICIENT TO OPERATE THE CLOSING DEVICE, AND FOR KEEPING THE SEMI-
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) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |