US3258668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor starter circuit
Assignee: —
•
Filing: —
•
Granted: 1966-06-28
•
Expires: 1983-06-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:55
CPC Classifications
H; H02; H02P; H02P1/00; H02P1/16; H02P1/42; H02P1/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
IN COMBINATION AN ALTERNATING CURRENT SOURCE, A LOAD, A CAPACITOR AND A SWITCHING CIRCUIT FOR SELECTIVELY CONNECTING SAID SOURCE TO SAID LOAD THROUGH SAID CAPACITOR, SAID SWITCHING CIRCUIT COMPRISING AN ELECTRON DEVICE IN CIRCUIT WITH SAID SOURCE AND SAID CAPACITOR FOR DISCHARGING AND CHARGING SAID CAPACITOR THROUGH SAID LOAD ON ONE HALF CYCLE OF SAID SOURCE, SAID ELECTRON DEVICE HAVING A CONDUCTIVE CONDITION AND A NONCONDUCTIVE CONDITION AND HAVING A CONTROL PORTION FOR SWITCHING THE SAME BETWEEN SAID CONDITIONS, AND A DIODE RECTIFIER IN CIRCUIT WITH SAID SOURCE AND SAID CAPACITOR FOR DISCHARGING AND CHARGING SAID CAPACITOR THROUGH SAID LOAD ON ALTERNATE HALF CYCLES OF SAID SOURCE, AND MEANS FOR SELECTIVELY ENERGIZING SAID CONTROL PORTION OF SAID ELECTRON DEVICE, SAID LOAD BEING ALTERNATING CURRENT ENERGIZED THROUGH SAID CAPACITOR ONLY WHEN SAID ELECTRON DEVICE IS ENERGIZED WITH SUFFICIENT VOLTAGE TO RENDER THE SAME CONDUCTIVE.
Claim 2
Dependent Claim
143 words
IN COMBINATION AN ALTERNATING CURRENT SOURCE, A LOAD, A CAPACITOR AND A SWITCHING CIRCUIT FOR SELECTIVELY CONNECTING SAID SOURCE TO SAID LOAD THROUGH SAID CAPACITOR, SAID SWITCHING CIRCUIT COMPRISING AN ELECTRON DEVICE IN CIRCUIT WITH SAID SOURCE AND SAID CAPACITOR FOR DISCHARGING AND CHARGING SAID CAPACITOR THROUGH SAID LOAD ON ONE HALF CYCLE OF SAID SOURCE, SAID ELECTRON DEVICE HAVING A CONDUCTIVE CONDITION AND A NONCONDUCTIVE CONDITION AND HAVING A CONTROL PORTION FOR SWITCHING THE SAME BETWEEN SAID CONDITIONS, AND A DIODE RECTIFIER IN CIRCUIT WITH SAID SOURCE AND SAID CAPACITOR FOR DISCHARGING AND CHARGING SAID CAPACITOR THROUGH SAID LOAD ON ALTERNATE HALF CYCLES OF SAID SOURCE, AND MEANS FOR SELECTIVELY ENERGIZING SAID CONTROL PORTION OF SAID ELECTRON DEVICE, SAID LOAD BEING ALTERNATING CURRENT ENERGIZED THROUGH SAID CAPACITOR ONLY WHEN SAID ELECTRON DEVICE IS ENERGIZED WITH SUFFICIENT VOLTAGE TO RENDER THE SAME CONDUCTIVE.
References Cited (Backward Citations)
US3071718A
Cited
US3071717A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |