Electrical power control means
Abstract
Abstract AN ELECTRICAL POWER CONTROL CIRCUIT FOR A LOAD WHICH PROVIDES FOR SELECTIVE APPLICATION OF POWER IN EXCESS OF THE NORMAL POWER TO THE LOAD. IN THE PREFERRED EMBODIMENT, THE LOAD IS A MOTOR AND THE APPLICATION OF ADDITIONAL POWER IS MANUALLY CONTROLLED AND PROVIDES GREATER POWER OUTPUT OF THE MOTOR SO A TOOL POWERED BY THE MOTOR WILL CONTINUE TO OPERATE EVEN THOUGH THE LOAD ON THE TOOL WOULD NORMALLY STALL THE MOTOR. THE ADDITIONAL POWER IS AUTOMATICALLY CUT BACK BY THE CONTROL CIRCUIT BEFORE DAMAGE TO THE MOTOR CAN OCCUR. IN THE PREFERRED EMBODIMENT, THE MOTOR DRIVES A PORTABLE POWER TOOL AND POWER TO THE MOTOR IS CONTROLLED BY VARYING THE FIRING ANGLE OF A TRIAC IN SERIES WITH THE MOTOR.
Inventors
- 👤 Walter H Vogelsberg
- 👤 Alexander C R Wilson
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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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) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |