Patent US3567347A successfully refreshed from Google Patents.
US3567347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic pump
Assignee: Individual
•
Filing: 1969-03-19
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Granted: 1971-03-02
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Expires: 1989-03-19
Abstract
Abstract CASING MEANS DEFINING INLET AND OUTPUT PORTS AND HAVING A ROTOR EQUIPPED WITH IMPELLER ELEMENTS AND JOURNALED IN THE CASING MEANS OF A FIXED AXIS, THE CASING MEANS DEFINING A NORMALLY STATIONARY SEMI-CYLINDRICAL WALL SURFACE IN ROTARY SLIDING ENGAGEMENT WITH THE ROTOR. A FLOW CONTROL MEMBER DEFINES AN ARCUATE SURFACE DIAMETRICALLY OPPOSED TO THE SEMI-CYLINDRICAL WALL SURFACE AND RADIALLY MOVABLE TOWARD AND AWAY FROM THE ROTOR TO DEFINE THEREWITH AN EXPANSIBLE AND CONTRACTABLE PUMPING CHAMBER, THE FLOW CONTROL MEMBER INCLUDING LEG PORTIONS HAVING IMPELLER ENGAGING SURFACES TANGENT TO THE SEMI-CYLINDRICAL AND ARCUATE SURFACES IN ALL POSITION OF MOVEMENT OF THE CONTROL MEMBER.
Inventors
- 👤 Wilbert Milo Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:09
CPC Classifications
F; F04; F04C; F04C14/00; F04C14/18; F04C14/22; F04C14/223
Claims Analysis
Total Claims: 0
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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) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |