Patent US3357360A successfully refreshed from Google Patents.
US3357360A
Expired / Lapsed
US
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Hydraulic pumping system
Assignee: Purex Corp Ltd
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Filing: 1965-11-22
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Granted: 1967-12-12
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Expires: 1985-11-22
Abstract
No abstract record available.
Inventors
- 👤 George L Borell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:43
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/02; F04B43/06; F04B43/073; F04B23/00; F04B23/04; F04B23/06; F04B43/08; F04B43/10; F04B43/113; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/2516
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A FLUID PUMPING SYSTEM COMPRISING A PUMP HAVING A CHAMBER AND A FLUID IMPERMEABLE RECIPROCALLY DISPLACEABLE PUMPING ELEMENT HAVING A FREELY FLOATING PORTION EXTENDING WITHIN SAID CHAMBER TO FORM FLUID TIGHTLY SEPARATED ZONES THEREIN, CONDUIT MEANS CONNECTED TO THE CHAMBER ZONE AT A FIRST SIDE OF SAID ELEMENT FOR CONDUCTING FLUID TO AND FROM THE CHAMBER, MEANS FORMING A FLUID PASSAGE CONTAINING A RESTRICTED EDUCTOR CONNECTED TO THE CHAMBER ZONE AT A SECOND SIDE OF SAID ELEMENT TO CAUSE DISPLACEMENT THEREOF IN ONE DIRECTION IN RESPONSE TO REDUCED PRESSURE COMMUNICATED BY VIRTUE OF FLUID FLOW THROUGH THE EDUCTOR, AND MEANS FOR INTERMITTENTLY CLOSING SAID FLUID PASSAGE AT THE DISCHARGE SIDE OF THE EDUCTOR TO THE EXTENT OF CAUSING TRANSMISSION INTERMITTENTLY OF POSITIVE PRESSURE FROM THE EDUCTOR TO SAID CHAMBER AND RESULTANT PUMPING DISPLACEMENT OF SAID ELEMENT IN AN OPPOSITE DIRECTION.
Claim 2
Dependent Claim
140 words
A FLUID PUMPING SYSTEM COMPRISING A PUMP HAVING A CHAMBER AND A FLUID IMPERMEABLE RECIPROCALLY DISPLACEABLE PUMPING ELEMENT HAVING A FREELY FLOATING PORTION EXTENDING WITHIN SAID CHAMBER TO FORM FLUID TIGHTLY SEPARATED ZONES THEREIN, CONDUIT MEANS CONNECTED TO THE CHAMBER ZONE AT A FIRST SIDE OF SAID ELEMENT FOR CONDUCTING FLUID TO AND FROM THE CHAMBER, MEANS FORMING A FLUID PASSAGE CONTAINING A RESTRICTED EDUCTOR CONNECTED TO THE CHAMBER ZONE AT A SECOND SIDE OF SAID ELEMENT TO CAUSE DISPLACEMENT THEREOF IN ONE DIRECTION IN RESPONSE TO REDUCED PRESSURE COMMUNICATED BY VIRTUE OF FLUID FLOW THROUGH THE EDUCTOR, AND MEANS FOR INTERMITTENTLY CLOSING SAID FLUID PASSAGE AT THE DISCHARGE SIDE OF THE EDUCTOR TO THE EXTENT OF CAUSING TRANSMISSION INTERMITTENTLY OF POSITIVE PRESSURE FROM THE EDUCTOR TO SAID CHAMBER AND RESULTANT PUMPING DISPLACEMENT OF SAID ELEMENT IN AN OPPOSITE DIRECTION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-11 | 1971-06-12 | 1971-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-11 | 1975-06-12 | 1975-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-11 | 1979-06-12 | 1979-12-12 | $7700.00 | Window Closed / Lapsed |