Patent US5645538A successfully refreshed from Google Patents.
US3223910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reversing systems for single phase motors
Assignee: Kidde Inc
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Filing: 1962-10-08
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Granted: 1965-12-14
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Expires: 1982-10-08
Abstract
No abstract record available.
Inventors
- 👤 Greenwald Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:58
CPC Classifications
H; H02; H02P; H02P23/00; H02P23/24
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
146 words
A REVERSING SYSTEM FOR A SINGLE-PHASE MOTOR HAVING A STARTING WINDING AND A SPEED-RESPONSIVE SWITCH NORMALLY CLOSED AND ARRANGED TO OPEN WHEN THE MOTOR ATTAINS A PREDETERMINED SPEED; SAID SYSTEM COMPRISING A REVERSING SWITCH TO SELECTIVELY CONNECT THE STARTING WINDING TO AN OUTSIDE POWER SUPPLY IN ONE OF TWO ALTERNATE DIRECTIONS TO CAUSE MOTOR STARTING AND ROTATION IN A SELECTED DIRECTION; RELAY SWITCH MEANS HAVING AN OPERATING COIL AND A SWITCH, THE OPERATING COIL BEING CONNECTED IN AN ENERGIZING CIRCUIT CONTROLLED BY SAID SPEED-RESPONSIVE SWITCH OF THE MOTOR; SAID RELAY SWITCH BEING IN SERIES CIRCUIT WITH AND COOPERATIVE WITH THE SPEED-RESPONSIVE SWITCH OF THE MOTOR FOR DISCONNECTING THE STARTING WINDING FROM SAID POWER SUPPLY WHEN THE REVERSING SWITCH IS TO BE OPERATED TO REVERSE THE DIRECTION OF ROTATION OF THE MOTOR, AND SAID RELAY SWITCH MEANS SERVING ALS TO PREVENT RECONNECTION OF THE STARTING WINDING FOR
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) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |