US3130333A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric pump motor
Assignee: Walbro Corp
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Filing: 1961-05-17
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Granted: 1964-04-21
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Expires: 1981-05-17
Abstract
No abstract record available.
Inventors
- 👤 Robert J Freye
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:10
CPC Classifications
H; H02; H02K; H02K33/00; H02K33/02; H02K33/10; F; F04; F04B; F04B43/00; F04B43/08; F04B43/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
IN A PUMP OF THE TYPE HAVING A PUMPING CHAMBER PROVIDED WITH AN INLET AND AN OUTLET AND AN EXPANSIBLE MEMBER ASSOCIATED WITH SAID CHAMBER HAVING ONE END AFFIXED ADJACENT SAID CHAMBER AND THE OTHER END MOVABLE, THAT IMPROVEMENT WHICH COMPRISES A SOLENOID ACTUATOR FOR SAID EXPANSIBLE MEMBER COMPRISING A SOLENOID WINDING HAVING AN ARMATURE PASSAGE THERETHROUGH, AN ARMATURE HAVING AN ACTUATOR SHAFT EXTENDING THROUGH SAID PASSAGE, AN ARMATURE DISC CARRIED BY SAID ACTUATOR SHAFT, SAID SHAFT HAVING MEANS THEREON TO LOCATE SAID DISC AXIALLY, SAID DISC BEING FREELY ROTATABLE RELATIVE TO SAID SHAFT, AND INTERPOSED BETWEEN SAID SHAFT AND THE MOVING END OF SAID EXPANSIBLE MEMBER, A HOUSING MOUNTING SAID SOLENOID WINDING, MEANS FOR FASTENING SAID HOUSING TO SAID PUMPING CHAMBER SAID HOUSING CARRYING SWITCH MEANS FOR EFFECTING CONTINUOUS OPERATION OF SAID SOLENOID UPON THE INTRODUCTION OF CURRENT TO SAID SOLENOID WINDING.
Claim 2
Dependent Claim
143 words
IN A PUMP OF THE TYPE HAVING A PUMPING CHAMBER PROVIDED WITH AN INLET AND AN OUTLET AND AN EXPANSIBLE MEMBER ASSOCIATED WITH SAID CHAMBER HAVING ONE END AFFIXED ADJACENT SAID CHAMBER AND THE OTHER END MOVABLE, THAT IMPROVEMENT WHICH COMPRISES A SOLENOID ACTUATOR FOR SAID EXPANSIBLE MEMBER COMPRISING A SOLENOID WINDING HAVING AN ARMATURE PASSAGE THERETHROUGH, AN ARMATURE HAVING AN ACTUATOR SHAFT EXTENDING THROUGH SAID PASSAGE, AN ARMATURE DISC CARRIED BY SAID ACTUATOR SHAFT, SAID SHAFT HAVING MEANS THEREON TO LOCATE SAID DISC AXIALLY, SAID DISC BEING FREELY ROTATABLE RELATIVE TO SAID SHAFT, AND INTERPOSED BETWEEN SAID SHAFT AND THE MOVING END OF SAID EXPANSIBLE MEMBER, A HOUSING MOUNTING SAID SOLENOID WINDING, MEANS FOR FASTENING SAID HOUSING TO SAID PUMPING CHAMBER SAID HOUSING CARRYING SWITCH MEANS FOR EFFECTING CONTINUOUS OPERATION OF SAID SOLENOID UPON THE INTRODUCTION OF CURRENT TO SAID SOLENOID WINDING.
References Cited (Backward Citations)
US2638849A
Cited
US2752513A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-21 | 1967-10-21 | 1968-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-21 | 1971-10-21 | 1972-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-21 | 1975-10-21 | 1976-04-21 | $7700.00 | Window Closed / Lapsed |