US3201673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Induction motor starting circuits
Assignee: WILLIFORD
•
Filing: 1961-08-28
•
Granted: 1965-08-17
•
Expires: 1981-08-28
Abstract
No abstract record available.
Inventors
- 👤 Jacob V Williford
- 👤 Horace B Ford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:13
CPC Classifications
H; H02; H02P; H02P1/00; H02P1/16; H02P1/42; H02P1/44; H02P1/445; H02K; H02K17/00; H02K17/02; H02K17/04; H02K17/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
AN ALTERNATING CURRENT INDUCTION MOTOR INCLUDING A WOUND STATOR AND A ROTOR THEREIN, SAID STATOR BEING WOUND WITH ADJACENT GROUPS OF COILS DISTRIBUTED ABOUT THE ATATOR IN CHORDED RELATION AND ADAPTED TO BE CONNECTED TOGETHER FOR POLYPHASE OPERATION OF THE MOTOR, TWO OF SAID GROUPS OF COILS BEING CONNECTED TOGETHER TO PROVIDE A MAIN, BOTH STARTING AND RUNNING, WINDING FOR SINGLE PHAASE OPEATION OF THE MOTOR; AND A THIRD GROUP OF COILS ADJACENT SAID FIRST TWO GROUPS OF COILS AND ALSO DISTRIBUTED ABOUT THE STATOR IN CHORDED RELATION, SAID THIRD GROUP OF COILS BEING DISPLACED SUBSTANTIALLY 90 DEGREES FROM SAID FIRST TWO GROUPS OF COILS AND HAVING AN ACCESSIBLE TAPPED POINT INTERMEDIATE ITS ENDS.
Claim 2
Dependent Claim
114 words
AN ALTERNATING CURRENT INDUCTION MOTOR INCLUDING A WOUND STATOR AND A ROTOR THEREIN, SAID STATOR BEING WOUND WITH ADJACENT GROUPS OF COILS DISTRIBUTED ABOUT THE ATATOR IN CHORDED RELATION AND ADAPTED TO BE CONNECTED TOGETHER FOR POLYPHASE OPERATION OF THE MOTOR, TWO OF SAID GROUPS OF COILS BEING CONNECTED TOGETHER TO PROVIDE A MAIN, BOTH STARTING AND RUNNING, WINDING FOR SINGLE PHAASE OPEATION OF THE MOTOR; AND A THIRD GROUP OF COILS ADJACENT SAID FIRST TWO GROUPS OF COILS AND ALSO DISTRIBUTED ABOUT THE STATOR IN CHORDED RELATION, SAID THIRD GROUP OF COILS BEING DISPLACED SUBSTANTIALLY 90 DEGREES FROM SAID FIRST TWO GROUPS OF COILS AND HAVING AN ACCESSIBLE TAPPED POINT INTERMEDIATE ITS ENDS.
References Cited (Backward Citations)
US1315965A
Cited
US1050444A
Cited
US1707423A
Cited
US1928108A
Cited
CH230786A
Cited
US2606311A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |