US3173043A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Convertible electrical machine
Assignee: Motors Liquidation Co
•
Filing: 1962-01-08
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Granted: 1965-03-09
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Expires: 1982-01-08
Abstract
No abstract record available.
Inventors
- 👤 William J Newill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:09
CPC Classifications
H; H02; H02K; H02K27/00; H02K27/04; H02K27/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
117 words
ON A CONVERTIBLE ELECTRICAL MACHINE OPERABLE AS AN A.-C. GENERATOR AS WELL AS A REPULSION-INDUCTION MOTOR HAVING A STATOR FIELD WINDING MEANS AND WOUND ARMATURE WITH A PLURALITY OF COMMUTATOR CONDUCTING BARS ON A ROTATABLE SHAFT, LIMITED ADDITIONAL COMPONENTS FOR SUCH ALTERNATE OPERATION, COMPRISING, A PAIR OF SHAFT-MOUNTED SLIP RING MEANS AND BRUSHES THEREON FOR D.-C. ENERGIZATION OF THE WOUND ARMATURE DURING GENERATOR OPERATION, AN AXIALLY SHIFTABLE SHORT CIRCUITING MEANS POSITIONED RADIALLY OUT OF ALIGNMENT AND AXIALLY AWAY FROM THE COMMUTATOR BARS DURING OPERATION AS AN A.-C. GENERATOR THROUGH POSITIONED AXIALLY ADJACENT THERETO AND SUBSTANTIALLY DURING OPERATION AS A REPULSION-INDUCTION MOTOR, AND ACTUATOR MEANS TO EFFECT AXIAL SHIFT OF SAID SHORT CIRCUITING MEANS INTO POSITIVELY DIFFERING POSITION.
References Cited (Backward Citations)
US875923A
Cited
US2465195A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-08 | 1968-09-07 | 1969-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-08 | 1972-09-07 | 1973-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-08 | 1976-09-07 | 1977-03-09 | $7700.00 | Window Closed / Lapsed |