Patent US3261297A successfully refreshed from Google Patents.
US3261297A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump
Assignee: Individual
•
Filing: 1965-05-24
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Granted: 1966-07-19
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Expires: 1985-05-24
Abstract
No abstract record available.
Inventors
- 👤 William H Daniel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:22
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/18; F04D29/22; F04D29/2238; F04D29/40; F04D29/42; F04D29/426; F04D29/4273
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
199 words
A PUMP COMPRISING A PUMP CASING DEFINING A PUMP CHAMBER AND HAVING AN INLET AND AN OUTLET, A ROTOR DISPOSED IN THE PUMP CHAMBER AND ROTATABLE ABOUT AN AXIS, A PLURALITY OF VANES IN UNITARY ASSEMBLY WITH THE ROTOR, THE INLET BEING DISPOSED INSIDE THE PATH OF THE VANES AND THE OUTLET BEING DISPOSED OUTSIDE THE PATH OF THE VANES, THE VANES HAVING AIRFOIL CONFIGURATION WITH RELATIVELY LOW PRESSURE SIDES AND RELATIVELY HIGH PRESSURE SIDES, THE VANES HAVING THEIR LOW PRESSURE SIDES ON THEIR RADIALLY INNER SIDES AND THEIR HIGH PRESSURE SIDES ON THEIR RADIALLY OUTER SIDES , THE CHAMBER LINE OF THE CROSS SECTION OF THE VANES FORMING A SMALL ACUTE ANGLE OF -5* TO +17* WITH A LINE PERPENDICULAR TO THE BISECTOR OF THE ANGLE ABOUT SAID AXIS THAT IS SUBTENDED BY THE VANES, AT THE INTERSECTION OF SAID CHAMBER LINE AND SAID BISECTOR, AND A FIXED VOLUTE DIPOSED INSIDE THE PATH OF THE VANES, THE VOLUTE PRESENTING TO FLUID ENTERING THE PUMP CHAMBER FROM THE INLET AT LEAST ONE BOUNDARY SURFACE THAT SPIRALS RADIALLY OUTWARDLY IN THE DIRECTION OF ROTATION OF THE ROTOR, SAID INLET BEING OFFSET RADIALLY OUTWARDLY IN A SUBSTANTIAL DISTANCE FROM SAID AXIS.
Claim 2
Dependent Claim
199 words
A PUMP COMPRISING A PUMP CASING DEFINING A PUMP CHAMBER AND HAVING AN INLET AND AN OUTLET, A ROTOR DISPOSED IN THE PUMP CHAMBER AND ROTATABLE ABOUT AN AXIS, A PLURALITY OF VANES IN UNITARY ASSEMBLY WITH THE ROTOR, THE INLET BEING DISPOSED INSIDE THE PATH OF THE VANES AND THE OUTLET BEING DISPOSED OUTSIDE THE PATH OF THE VANES, THE VANES HAVING AIRFOIL CONFIGURATION WITH RELATIVELY LOW PRESSURE SIDES AND RELATIVELY HIGH PRESSURE SIDES, THE VANES HAVING THEIR LOW PRESSURE SIDES ON THEIR RADIALLY INNER SIDES AND THEIR HIGH PRESSURE SIDES ON THEIR RADIALLY OUTER SIDES , THE CHAMBER LINE OF THE CROSS SECTION OF THE VANES FORMING A SMALL ACUTE ANGLE OF -5* TO +17* WITH A LINE PERPENDICULAR TO THE BISECTOR OF THE ANGLE ABOUT SAID AXIS THAT IS SUBTENDED BY THE VANES, AT THE INTERSECTION OF SAID CHAMBER LINE AND SAID BISECTOR, AND A FIXED VOLUTE DIPOSED INSIDE THE PATH OF THE VANES, THE VOLUTE PRESENTING TO FLUID ENTERING THE PUMP CHAMBER FROM THE INLET AT LEAST ONE BOUNDARY SURFACE THAT SPIRALS RADIALLY OUTWARDLY IN THE DIRECTION OF ROTATION OF THE ROTOR, SAID INLET BEING OFFSET RADIALLY OUTWARDLY IN A SUBSTANTIAL DISTANCE FROM SAID AXIS.
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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) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |