Patent US3109948A successfully refreshed from Google Patents.
US3109948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor winding control and means therefor
Assignee: Individual
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Filing: 1959-07-24
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Granted: 1963-11-05
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Expires: 1979-07-24
Abstract
No abstract record available.
Inventors
- 👤 Carl S Hellmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:01
CPC Classifications
H; H02; H02K; H02K17/00; H02K17/02; H02K17/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
IN COMBINATION, AN ELECTRIC MOTOR HAVING A MAIN WINDING, AN AUXILIARY WINDING AND A MOTOR SHAFT; A SLEEVE RECEIVING A PORTION OF SAID MOTOR SHAFT THEREIN, MEANS CARRIED BY SAID SLEEVE AND FORMING A PUMP CHAMBER AROUND A SECTION OF SAID SHAFT, PUMP VANE MEANS FORMED ON THE SAID SECTION OF SAID SHAFT IN SAID PUMP CHAMBER TO FORM A PUMP HAVING OUTLET PRESSURES PROPORTIONAL TO THE SPEED OF SAID MOTOR, MEANS CONNECTING TO SAID SLEEVE AND SAID PUMP CHAMBER TO SUPPLY FLUID THERETO, AND PUMP OUTLET MEANS CONNECTING TO SAID PUMP CHAMBER AND SAID SLEEVE FOR TRANSMITTING FLUID UNDER PUMP OUTLET PRESSURE THEREFROM WHEREBY IT CAN BE TRANSMITTED TO A PRESSURE ACTUATED SWITCH FOR CONTROLLING ENERGIZATION OF SAID AUXILIARY WINDING DEPENDENT UPON THE SPEED OF OPERATION OF SAID MOTOR.
Claim 2
Dependent Claim
130 words
IN COMBINATION, AN ELECTRIC MOTOR HAVING A MAIN WINDING, AN AUXILIARY WINDING AND A MOTOR SHAFT; A SLEEVE RECEIVING A PORTION OF SAID MOTOR SHAFT THEREIN, MEANS CARRIED BY SAID SLEEVE AND FORMING A PUMP CHAMBER AROUND A SECTION OF SAID SHAFT, PUMP VANE MEANS FORMED ON THE SAID SECTION OF SAID SHAFT IN SAID PUMP CHAMBER TO FORM A PUMP HAVING OUTLET PRESSURES PROPORTIONAL TO THE SPEED OF SAID MOTOR, MEANS CONNECTING TO SAID SLEEVE AND SAID PUMP CHAMBER TO SUPPLY FLUID THERETO, AND PUMP OUTLET MEANS CONNECTING TO SAID PUMP CHAMBER AND SAID SLEEVE FOR TRANSMITTING FLUID UNDER PUMP OUTLET PRESSURE THEREFROM WHEREBY IT CAN BE TRANSMITTED TO A PRESSURE ACTUATED SWITCH FOR CONTROLLING ENERGIZATION OF SAID AUXILIARY WINDING DEPENDENT UPON THE SPEED OF OPERATION OF SAID MOTOR.
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) | 1966-11-04 | 1967-05-06 | 1967-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-04 | 1971-05-06 | 1971-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-04 | 1975-05-06 | 1975-11-05 | $7700.00 | Window Closed / Lapsed |