US3264539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Direct current motor with transistorized power supply
Assignee: —
•
Filing: —
•
Granted: 1966-08-02
•
Expires: 1983-08-02
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:16
CPC Classifications
H; H02; H02K; H02K29/00; H02K29/06; H02K29/12; G; G11; G11B; G11B19/00; G11B19/20; G11B19/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
IN A D.C. MOTOR HAVING A STATOR AND A ROTOR, THE COMBINATION WHICH COMPRISES: MEANS FORMING ARMATURE WINDINGS; A POWER SUPPLY HAVING ARMATURE TRANSISTORS CONNECTED TO SAID WINDINGS; A CONTROL CIRCUIT CONNECTED TO SAID ARMATURE TRANSISTORS FOR CONTROLLING THE SAME IN DEPENDENCE ON THE RELATIVE ANGULAR POSITION BETWEEN THE STATOR AND ROTOR, SAID CONTROL CIRCUIT BEING AN OSCILLATORY CIRCUIT INCORPORATING A CONTROL TRANSISTOR; AND SPEED REGULATING MEANS CONNECTED TO SAID CONTROL CIRCUIT FOR APPLYING THERETO A TACHOMETER VOLTAGE, DEPENDENT ON THE ROTATIONAL
Claim 2
Dependent Claim
82 words
IN A D.C. MOTOR HAVING A STATOR AND A ROTOR, THE COMBINATION WHICH COMPRISES: MEANS FORMING ARMATURE WINDINGS; A POWER SUPPLY HAVING ARMATURE TRANSISTORS CONNECTED TO SAID WINDINGS; A CONTROL CIRCUIT CONNECTED TO SAID ARMATURE TRANSISTORS FOR CONTROLLING THE SAME IN DEPENDENCE ON THE RELATIVE ANGULAR POSITION BETWEEN THE STATOR AND ROTOR, SAID CONTROL CIRCUIT BEING AN OSCILLATORY CIRCUIT INCORPORATING A CONTROL TRANSISTOR; AND SPEED REGULATING MEANS CONNECTED TO SAID CONTROL CIRCUIT FOR APPLYING THERETO A TACHOMETER VOLTAGE, DEPENDENT ON THE ROTATIONAL
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |