US3335347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reversible single phase asynchronous motors
Assignee: Individual
•
Filing: 1965-02-23
•
Granted: 1967-08-08
•
Expires: 1985-02-23
Abstract
No abstract record available.
Inventors
- 👤 Carlstedt Sven Borje Fredrik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:33
CPC Classifications
H; H02; H02P; H02P23/00; H02P23/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
IN A REVERSIBLE SINGLE PHASE ASYNCHRONOUS MOTOR APPARATUS OF THE CHARACTER DESCRIBED HAVING A SHUNT WOUND ROTOR, A SINGLE POLE CONTACT SWITCH AND TWO STATOR WINDINGS WITH THE FIRST END OF EACH STATOR WINDING CONNECTED TO A SINGLE POLE CONTACT WITH ONE OF THE SUPPLY LINES FOR SAID APPARATUS AND WITH THE SECOND ENDS OF SAID STATOR WINDINGS SEPARATELY CONNECTED TO THE SECOND SUPPLY LINE THROUGH SAID SINGLE POLE CONTACT SWITCH FOR SELECTIVELY CONNECTING ONE OF SAID STATOR WINDINGS TO THE SAID SECOND SUPPLY LINE, THE COMBINATION WHICH COMPRISES A SECOND PARALLEL CIRCUIT BETWEEN EACH OF THE SECOND ENDS OF SAID STATOR WINDINGS AND THE SAID SECOND SUPPLY LINE AND BYPASSING SAID CONTACT SWITCH, WITH EACH OF SAID SECOND PARALLEL CIRCUITS HAVING A RESISTOR DISPOSED THEREIN, AND A CONDENSER CONNECTED IN PARALLEL WITH SAID SINGLE POLE CONTACT SWITCH TO THE SECOND ENDS OF SAID STATOR WIND-
Claim 2
Dependent Claim
146 words
IN A REVERSIBLE SINGLE PHASE ASYNCHRONOUS MOTOR APPARATUS OF THE CHARACTER DESCRIBED HAVING A SHUNT WOUND ROTOR, A SINGLE POLE CONTACT SWITCH AND TWO STATOR WINDINGS WITH THE FIRST END OF EACH STATOR WINDING CONNECTED TO A SINGLE POLE CONTACT WITH ONE OF THE SUPPLY LINES FOR SAID APPARATUS AND WITH THE SECOND ENDS OF SAID STATOR WINDINGS SEPARATELY CONNECTED TO THE SECOND SUPPLY LINE THROUGH SAID SINGLE POLE CONTACT SWITCH FOR SELECTIVELY CONNECTING ONE OF SAID STATOR WINDINGS TO THE SAID SECOND SUPPLY LINE, THE COMBINATION WHICH COMPRISES A SECOND PARALLEL CIRCUIT BETWEEN EACH OF THE SECOND ENDS OF SAID STATOR WINDINGS AND THE SAID SECOND SUPPLY LINE AND BYPASSING SAID CONTACT SWITCH, WITH EACH OF SAID SECOND PARALLEL CIRCUITS HAVING A RESISTOR DISPOSED THEREIN, AND A CONDENSER CONNECTED IN PARALLEL WITH SAID SINGLE POLE CONTACT SWITCH TO THE SECOND ENDS OF SAID STATOR WIND-
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) | 1970-08-07 | 1971-02-06 | 1971-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-07 | 1975-02-06 | 1975-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-07 | 1979-02-06 | 1979-08-08 | $7700.00 | Window Closed / Lapsed |