Patent US3098449A successfully refreshed from Google Patents.
US3098449A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slush pump
Assignee: Individual
•
Filing: 1959-12-07
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Granted: 1963-07-23
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Expires: 1979-12-07
Abstract
No abstract record available.
Inventors
- 👤 Robert H Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:19
CPC Classifications
F; F04; F04C; F04C14/00; F04C14/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A PUMPING APPARATUS, COMPRISING A PLURALITY OF PUMPS EACH HAVING A BARREL PROVIDED INTERNALLY WITH A HELICAL GROOVE AND A HELICAL ROTOR WITHIN THE BARREL, AN ANNULAR INLET MANIFOLD PROVIDED WITH A PLURALITY OF ANGULARLY SPACED VALVE HOUSINGS, AN ANNULAR OUTLET MANIFOLD HAVING A PLURALITY OF VALVE HOUSINGS RESPECTIVELY ALIGNED WITH THOSE OF SAID INLET MANIFOLD, A VALVE SLEEVE MOUNTED IN EACH OF SAID HOUSINGS, EACH OF SAID VALVE SLEEVES HAVING AN AXIAL OPENING RECEIVING AN END OF ONE OF SAID PUMP BARRELS AND ALSO HAVING A LATERAL PORT COMMUNICATING WITH THE AXIAL OPENING, EACH VALVE SLEEVE BEING ROTATABLE ABOUT THE AXIS OF THE ASSOCIATED PUMP BARREL TO CONTROL COMMU-
Claim 2
Dependent Claim
110 words
A PUMPING APPARATUS, COMPRISING A PLURALITY OF PUMPS EACH HAVING A BARREL PROVIDED INTERNALLY WITH A HELICAL GROOVE AND A HELICAL ROTOR WITHIN THE BARREL, AN ANNULAR INLET MANIFOLD PROVIDED WITH A PLURALITY OF ANGULARLY SPACED VALVE HOUSINGS, AN ANNULAR OUTLET MANIFOLD HAVING A PLURALITY OF VALVE HOUSINGS RESPECTIVELY ALIGNED WITH THOSE OF SAID INLET MANIFOLD, A VALVE SLEEVE MOUNTED IN EACH OF SAID HOUSINGS, EACH OF SAID VALVE SLEEVES HAVING AN AXIAL OPENING RECEIVING AN END OF ONE OF SAID PUMP BARRELS AND ALSO HAVING A LATERAL PORT COMMUNICATING WITH THE AXIAL OPENING, EACH VALVE SLEEVE BEING ROTATABLE ABOUT THE AXIS OF THE ASSOCIATED PUMP BARREL TO CONTROL COMMU-
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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) | 1966-07-22 | 1967-01-21 | 1967-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-22 | 1971-01-21 | 1971-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-22 | 1975-01-21 | 1975-07-23 | $7700.00 | Window Closed / Lapsed |