Patent US3153385A successfully refreshed from Google Patents.
US3153385A
Expired / Lapsed
US
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Pump for high viscosity fluids
Assignee: Individual
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Filing: 1963-01-17
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Granted: 1964-10-20
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Expires: 1983-01-17
Abstract
No abstract record available.
Inventors
- 👤 Jr Richard Le Baron Bowen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:53
CPC Classifications
F; F04; F04B; F04B7/00; F04B7/04; F04B15/00; F04B15/02; F04B15/023; F04B53/00; F04B53/10; F04B53/1002; F04B53/14; F04B53/16; F04B53/162; F04B53/164
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
IN A PUMP, A PUMP BODY, SAID BODY PROVIDING WALLS DEFINING A BORE, A PISTON FITTED FOR RECIPROCATION IN SAID BORE WITH A FREE END EXTENDING INTO SAID BORE, MEANS CONNECTED TO THE END OF SAID PISTON OPPOSITE SAID FREE END FOR ACTUATING SAID PISTON, A FLEXIBLE MEMBER FORMING A SEALED CONNECTION BETWEEN THE END OF SAID PISTON OPPOSITE SAID FREE END AND SAID PUMP BORE ADJACENT SAID ACTUATING MEANS, SAID FLEXIBLE SEALING CONNECTION FORMING A CHAMBER OF VARIABLE VOLUME, A DISCHARGE PORT CONNECTING WITH SAID BORE, A SUCTION PORT INTERMEDIATE THE CHAMBER OF VARIABLE VOLUME AND THE DISCHARGE PORT, AND MEANS CONNECTING SAID SUCTION PORT AND SAID CHAMBER FORMED BY THE FLEXIBLE SEALING CONNECTION.
Claim 2
Dependent Claim
115 words
IN A PUMP, A PUMP BODY, SAID BODY PROVIDING WALLS DEFINING A BORE, A PISTON FITTED FOR RECIPROCATION IN SAID BORE WITH A FREE END EXTENDING INTO SAID BORE, MEANS CONNECTED TO THE END OF SAID PISTON OPPOSITE SAID FREE END FOR ACTUATING SAID PISTON, A FLEXIBLE MEMBER FORMING A SEALED CONNECTION BETWEEN THE END OF SAID PISTON OPPOSITE SAID FREE END AND SAID PUMP BORE ADJACENT SAID ACTUATING MEANS, SAID FLEXIBLE SEALING CONNECTION FORMING A CHAMBER OF VARIABLE VOLUME, A DISCHARGE PORT CONNECTING WITH SAID BORE, A SUCTION PORT INTERMEDIATE THE CHAMBER OF VARIABLE VOLUME AND THE DISCHARGE PORT, AND MEANS CONNECTING SAID SUCTION PORT AND SAID CHAMBER FORMED BY THE FLEXIBLE SEALING CONNECTION.
References Cited (Backward Citations)
US2180818A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-10-20 | 1968-04-20 | 1968-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-20 | 1972-04-20 | 1972-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-20 | 1976-04-20 | 1976-10-20 | $7700.00 | Window Closed / Lapsed |