US3253203A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor braking circuit
Assignee: Stewart Warner Corp
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Filing: 1962-11-29
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Granted: 1966-05-24
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Expires: 1982-11-29
Abstract
No abstract record available.
Inventors
- 👤 Bardwell Francis Gregory
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:32
CPC Classifications
H; H02; H02P; H02P7/00; H02P7/03; Y; Y10; Y10S; Y10S228/00; Y10S228/904
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
85 words
IN COMBINATION, A SPLIT FIELD SERIES MOTOR HAVING AN ARMATURE WINDING, A FIRST FIELD WINDING CONNECTED AT ONE END TO ONE END OF SAID ARMATURE WINDING FOR DRIVING SAID ARMATURE IN ONE DIRECTION, A SECOND FIELD WINDING CONNECTED AT ONE END TO SAID END OF SAID ARMATURE WINDING FOR DRIVING SAID ARMATURE IN THE OPPOSITE DIRECTION, MEANS FOR CONNECTING AN ELECTRIC CURRENT SOURCE TO A SELECTED ONE OF SAID FIELD WINDINGS, A BRAKE HAVING A FRICTION MEMBER NORMALLY ENGAGED TO PREVENT ROTATION OF SAID ARMATURE,
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) | 1969-05-23 | 1969-11-22 | 1970-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-23 | 1973-11-22 | 1974-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-23 | 1977-11-22 | 1978-05-24 | $7700.00 | Window Closed / Lapsed |