US3358205A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control circuit
Assignee: Motorola Solutions Inc
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Filing: 1964-09-22
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Granted: 1967-12-12
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Expires: 1984-09-22
Abstract
No abstract record available.
Inventors
- 👤 Wechsler Reuben
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:33
CPC Classifications
H; H02; H02P; H02P25/00; H02P25/02; H02P25/10; H02P25/14; H02P7/00; H02P7/06; H02P7/18; H02P7/24; H02P7/28; H02P7/285; H02P7/292; H02P7/293; Y; Y10; Y10S; Y10S388/00; Y10S388/907; Y10S388/917; Y10S388/918
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A MOTOR SPEED CONTROL CIRCUIT FOR CONNECTING AN ELECTRIC MOTOR TO AN ALTERNATING CURRENT ENERGY CIRCUIT, INCLUDING IN COMBINATION, BRIDGE RECTIFIER MEANS, A SEMICONDUCTOR CONTROLLED RECTIFIER CONNECTED TO SAID RECTIFIER MEANS AND FORMING A SERIES CIRCUIT THEREWITH FOR CONNECTING THE MOTOR TO THE ENERGIZING CIRCUIT, AND CONTROL MEANS CONNECTED TO SAID SEMICONDUCTOR CONTROLLED RECTIFIER FOR APPLYING PULSES THERETO FOR TURNING SAID SEMICONDUCTOR CONTROLLED RECTIFIER ON, SAID RECTIFIER MEANS FORMING A FULL WAVE RECTIFIER FOR APPLYING A RECTIFIED VOLTAGE TO SAID SEMICONDUCTOR CONTROLLED RECTIFIER FOR TURNING THE SAME OFF WHEN THE RECTIFIED VOLTAGE THEREACROSS DROPS TO A GIVEN LEVEL, SAID CONTROL MEANS INCLUDING A PORTION CONNECTED IN SERIES WITH SAID SEMICONDUCTOR CONTROLLED RECTIFIER AND SENSING THE MAGNITUDE OF CURRENT CONDUCTED THERETHROUGH SO THAT SAID CONTROL MEANS CONTROLS THE PULSE CYCLE TIME THEREOF IN INVERSE PROPORTION TO
Claim 2
Dependent Claim
135 words
A MOTOR SPEED CONTROL CIRCUIT FOR CONNECTING AN ELECTRIC MOTOR TO AN ALTERNATING CURRENT ENERGY CIRCUIT, INCLUDING IN COMBINATION, BRIDGE RECTIFIER MEANS, A SEMICONDUCTOR CONTROLLED RECTIFIER CONNECTED TO SAID RECTIFIER MEANS AND FORMING A SERIES CIRCUIT THEREWITH FOR CONNECTING THE MOTOR TO THE ENERGIZING CIRCUIT, AND CONTROL MEANS CONNECTED TO SAID SEMICONDUCTOR CONTROLLED RECTIFIER FOR APPLYING PULSES THERETO FOR TURNING SAID SEMICONDUCTOR CONTROLLED RECTIFIER ON, SAID RECTIFIER MEANS FORMING A FULL WAVE RECTIFIER FOR APPLYING A RECTIFIED VOLTAGE TO SAID SEMICONDUCTOR CONTROLLED RECTIFIER FOR TURNING THE SAME OFF WHEN THE RECTIFIED VOLTAGE THEREACROSS DROPS TO A GIVEN LEVEL, SAID CONTROL MEANS INCLUDING A PORTION CONNECTED IN SERIES WITH SAID SEMICONDUCTOR CONTROLLED RECTIFIER AND SENSING THE MAGNITUDE OF CURRENT CONDUCTED THERETHROUGH SO THAT SAID CONTROL MEANS CONTROLS THE PULSE CYCLE TIME THEREOF IN INVERSE PROPORTION TO
References Cited (Backward Citations)
US3146392A
Cited
US3210605A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-11 | 1971-06-12 | 1971-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-11 | 1975-06-12 | 1975-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-11 | 1979-06-12 | 1979-12-12 | $7700.00 | Window Closed / Lapsed |