Patent US3144597A successfully refreshed from Google Patents.
US3144597A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Single phase alternating current motor system
Assignee: LEE FOUNDATION FOR NUTRITIONAL
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Filing: 1960-06-02
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Granted: 1964-08-11
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Expires: 1980-06-02
Abstract
No abstract record available.
Inventors
- 👤 Lee Royal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:03
CPC Classifications
H; H02; H02K; H02K17/00; H02K17/02; H02K17/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
87 words
IN COMBINATION, AN ALTERNATING CURRENT MOTOR HAVING COOPERATING STATOR AND ROTOR MEMBERS AND INCLUDING A PAIR OF PHASE WINDINGS ADAPTED FOR ENERGIZATION FROM A SINGLE-PHASE CURRENT SOURCE, AN OPTICAL PROJECTOR INCLUDING A PROJECTION LAMP CONNECTED IN SERIES WITH ONE OF SAID PHASE WINDINGS AND FORMING A PHASE-SHIFTING ELEMENT FOR THE CONNECTED PHASE WINDING, SWITCH MEANS FOR OPENING THE CIRCUIT THROUGH THE LAMP AT WILL WHILE THE MOTOR IS RUNNING, AND MEANS FOR INSURING A CLOSED CONDITION OF SAID SWITCH MEANS WHEN THE MOTOR IS RESTARTED FROM REST.
References Cited (Backward Citations)
US1966531A
Cited
US2224422A
Cited
US2288462A
Cited
US2449713A
Cited
US2507399A
Cited
US2901645A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-11 | 1968-02-10 | 1968-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-11 | 1972-02-10 | 1972-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-11 | 1976-02-10 | 1976-08-11 | $7700.00 | Window Closed / Lapsed |