Patent US3161855A successfully refreshed from Google Patents.
US3348114A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor drive apparatus with dynamic braking
Assignee: Westinghouse Electric Corp
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Filing: 1964-05-11
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Granted: 1967-10-17
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Expires: 1984-05-11
Abstract
No abstract record available.
Inventors
- 👤 Jr Robert L Wright
- 👤 Harry E Koerner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:49
CPC Classifications
H; H02; H02P; H02P3/00; H02P3/06; H02P3/08; H02P3/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A DRIVE SYSTEM COMPRISING ALTERNATING CURRENT LINE CONDUCTORS; A DIRECT CURRENT MOTOR HAVING AN ARMATURE IN MECHANICAL TORQUE-COUPLED CONNECTION TO A PART-TIME OVERHAULING LOAD AND HAVING A SHUNT FIELD; MEANS SUPPLYING ENERGIZING DIRECT CURRENT TO SAID SHUNT FIELD DURING OPERATION OF THE SYSTEM INCLUDING AT TIMES BOTH LOAD ACTUATION AND LOAD BRAKING; FULL-WAVE BRIDGE RECTIFIER MEANS HAVING INPUT TERMINALS AND OUTPUT TERMINALS; AND CIRCUIT MEANS CONNECTING THE RECTIFIER INPUT TERMINALS TO SAID ALTERNATING CURRENT LINE CONDUCTORS AND CONNECTING SAID ARMATURE AND SAID DYNAMIC BRAKING CURRENT ABSORBING MEANS SIMULTANEOUSLY ACROSS THE RECTIFIER OUTPUT TERMINALS, DURING BOTH LOAD ACTUATION AND LOAD BRAKING.
Claim 2
Dependent Claim
100 words
A DRIVE SYSTEM COMPRISING ALTERNATING CURRENT LINE CONDUCTORS; A DIRECT CURRENT MOTOR HAVING AN ARMATURE IN MECHANICAL TORQUE-COUPLED CONNECTION TO A PART-TIME OVERHAULING LOAD AND HAVING A SHUNT FIELD; MEANS SUPPLYING ENERGIZING DIRECT CURRENT TO SAID SHUNT FIELD DURING OPERATION OF THE SYSTEM INCLUDING AT TIMES BOTH LOAD ACTUATION AND LOAD BRAKING; FULL-WAVE BRIDGE RECTIFIER MEANS HAVING INPUT TERMINALS AND OUTPUT TERMINALS; AND CIRCUIT MEANS CONNECTING THE RECTIFIER INPUT TERMINALS TO SAID ALTERNATING CURRENT LINE CONDUCTORS AND CONNECTING SAID ARMATURE AND SAID DYNAMIC BRAKING CURRENT ABSORBING MEANS SIMULTANEOUSLY ACROSS THE RECTIFIER OUTPUT TERMINALS, DURING BOTH LOAD ACTUATION AND LOAD BRAKING.
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) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |