Patent US4499879A successfully refreshed from Google Patents.
US3335302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transmission for a self-starting synchronous motor
Assignee: US Philips Corp
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Filing: 1965-06-10
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Granted: 1967-08-08
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Expires: 1985-06-10
Abstract
No abstract record available.
Inventors
- 👤 Linden Arie Van Der
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:46
CPC Classifications
H; H02; H02K; H02K7/00; H02K7/10; H02K7/118; H02K7/1185
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A SELF-STARTING SYNCHRONOUS MOTOR COMPRISING A STATOR, A ROTOR WITHIN SAID STATOR, A SHAFT DRIVEN BY SAID ROTOR, A LEVER ECCENTRIC WITH SAID SHAFT AND MEANS FOR PIVOTALLY SUPPORTING SAID LEVER FOR ROTATION WITH SAID SHAFT, SAID LEVER HAVING A WEIGHT AT ONE END AND A TRANSVERSE PAWL MEANS PROJECTING FROM THE OTHER END OF SAID LEVER IN ONE DIRECTION, A RING OF FRICTION MATERIAL ADJACENT THE SAID PAWL MEANS, AND MEANS FOR BIASING SAID LEVER FOR LIGHTLY ENGAGING SAID PAWL MEANS AND SAID RING, SAID PAWL MEANS BEING PRESSED AGAINST SAID RING WHEN THE ROTOR TENDS TO ROTATE IN THE PROJECTING DIRECTION OF SAID PAWL MEANS THUS PROHIBITING ROTATION IN SAID DIRECTION ONLY.
Claim 2
Dependent Claim
114 words
A SELF-STARTING SYNCHRONOUS MOTOR COMPRISING A STATOR, A ROTOR WITHIN SAID STATOR, A SHAFT DRIVEN BY SAID ROTOR, A LEVER ECCENTRIC WITH SAID SHAFT AND MEANS FOR PIVOTALLY SUPPORTING SAID LEVER FOR ROTATION WITH SAID SHAFT, SAID LEVER HAVING A WEIGHT AT ONE END AND A TRANSVERSE PAWL MEANS PROJECTING FROM THE OTHER END OF SAID LEVER IN ONE DIRECTION, A RING OF FRICTION MATERIAL ADJACENT THE SAID PAWL MEANS, AND MEANS FOR BIASING SAID LEVER FOR LIGHTLY ENGAGING SAID PAWL MEANS AND SAID RING, SAID PAWL MEANS BEING PRESSED AGAINST SAID RING WHEN THE ROTOR TENDS TO ROTATE IN THE PROJECTING DIRECTION OF SAID PAWL MEANS THUS PROHIBITING ROTATION IN SAID DIRECTION ONLY.
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) | 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 |