US3117528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
rosaen
Assignee: —
•
Filing: —
•
Granted: 1964-01-14
•
Expires: 1981-01-14
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:53
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/30; F04C2/34; F04C2/344; F04C2/3441; F04C2/3445; F01; F01C; F01C21/00; F01C21/08; F01C21/0809; F01C21/0818; F01C21/0827; F01C21/0836; F01C21/0854; F01C21/0863; F01C21/10; F01C21/104; F01C21/106; F04C2/3446
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
IN A VANE TYPE FLUID PUMP COMPRISING A ROTOR PROVIDED WITH VANE SLOTS ARRANGED IN A SUBSTANTIALLY RADIAL DIRECTION IN ITS PERIPHERY, AND WITH VANES SLIDABLE IN SAID SLOTS, AND A PUMP RING SURROUNDING THE ROTOR AND CONTROLLING THE SLIDING OF SAID VANES, MEANS FOR ADMITTING FLUID TO THE SPACES BETWEEN SAID VANES, MEANS FOR ADMITTING FLUID AT INLET PRESSURE TO THE SLOTS UNDER SAID VANES, SAID ADMISSIONS BEING DURING THAT PORTION OF THE ROTOR ROTATION IN WHICH THE VANES ARE MOVING OUTWARD OF SAID SLOTS, MEANS FOR MAINTAINING AT LOW PRESSURE AS COMPARED TO DELIVERY PRESSURE THE FLUID IN THE VANE SLOTS DURING THAT PORTION OF THE ROTATION IN WHICH THE VANES ARE AT SUBSTANTIALLY THEIR OUTERMOST POSITIONS AND MEANS FOR RESILIENTLY RESISTING AND CONTROLLING THE OUTFLOW OF FLUID FROM THE SLOTS UNDER SAID VANES DURING THAT PORTION OF THE ROTATION IN WHICH THE VANES ARE BEING MOVED BY THE RING INWARDLY OF THE SLOTS.
Claim 2
Dependent Claim
156 words
IN A VANE TYPE FLUID PUMP COMPRISING A ROTOR PROVIDED WITH VANE SLOTS ARRANGED IN A SUBSTANTIALLY RADIAL DIRECTION IN ITS PERIPHERY, AND WITH VANES SLIDABLE IN SAID SLOTS, AND A PUMP RING SURROUNDING THE ROTOR AND CONTROLLING THE SLIDING OF SAID VANES, MEANS FOR ADMITTING FLUID TO THE SPACES BETWEEN SAID VANES, MEANS FOR ADMITTING FLUID AT INLET PRESSURE TO THE SLOTS UNDER SAID VANES, SAID ADMISSIONS BEING DURING THAT PORTION OF THE ROTOR ROTATION IN WHICH THE VANES ARE MOVING OUTWARD OF SAID SLOTS, MEANS FOR MAINTAINING AT LOW PRESSURE AS COMPARED TO DELIVERY PRESSURE THE FLUID IN THE VANE SLOTS DURING THAT PORTION OF THE ROTATION IN WHICH THE VANES ARE AT SUBSTANTIALLY THEIR OUTERMOST POSITIONS AND MEANS FOR RESILIENTLY RESISTING AND CONTROLLING THE OUTFLOW OF FLUID FROM THE SLOTS UNDER SAID VANES DURING THAT PORTION OF THE ROTATION IN WHICH THE VANES ARE BEING MOVED BY THE RING INWARDLY OF THE SLOTS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-01-13 | 1967-07-15 | 1968-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-13 | 1971-07-15 | 1972-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-13 | 1975-07-15 | 1976-01-14 | $7700.00 | Window Closed / Lapsed |