US3249054A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump
Assignee: Petroleum Research Corp
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Filing: 1965-10-04
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Granted: 1966-05-03
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Expires: 1985-10-04
Abstract
No abstract record available.
Inventors
- 👤 Gilman A Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:01
CPC Classifications
F; F04; F04C; F04C13/00; F04C13/008
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
171 words
A PUMPING UNIT FOR OIL WELLS AND THE LIKE COMPRISING AN ELONGATED HOUSING HAVING OPEN ENDS, A PUMP ARRANGED WITHIN SAID HOUSING AND HAVING AN INLET AND AN OUTLET IN COMMUNICATION WITH RESPECTIVE ENDS OF SAID HOUSING, MEANS FORMNG A PASSAGE THROUGH SAID UNIT FOR PROVIDING A BYPASS AROUND SAID PUMP FROM ONE END OF SAID HOUSING TO THE OTHER AND FOR AFFORDING THE PASSAGE OF SENSING INSTRUMENTS AND THE LIKE THROUGH SAID UNIT, MANS FOR ACTUATING SAID PUMP TO CIRCULATE FLUID FROM SAID INLET TO SAID OUTLET, REMOVABLE CLOSURE MEANS POSITIONED IN SAID BYPASS FOR CLOSING SAID BYPASS WHEREBY SAID PUMP IS EFFECTIVE TO PUMP FLUID INTO SAID UNIT AT ONE END AND OUT THE OTHER, AND MEANS OPERATIVELY ASSOCIATED WITH SAID CLOSURE MEANS FOR FACILITATING THE CONTROL FROM OUTSIDE SAID HOUSING OF THE REMOVAL OF SAID CLOSURE MEANS FOR SAID BYPASS WHEREBY SAID PUMPING UNIT MAY BE LEFT IN POSITION IN A WELL AND SAID CLOSURE MEANS REMOVED TO AFFORD ACCESS TO THE RESERVOIR FORMATION BELOW THE PUMP UNIT.
Claim 2
Dependent Claim
171 words
A PUMPING UNIT FOR OIL WELLS AND THE LIKE COMPRISING AN ELONGATED HOUSING HAVING OPEN ENDS, A PUMP ARRANGED WITHIN SAID HOUSING AND HAVING AN INLET AND AN OUTLET IN COMMUNICATION WITH RESPECTIVE ENDS OF SAID HOUSING, MEANS FORMNG A PASSAGE THROUGH SAID UNIT FOR PROVIDING A BYPASS AROUND SAID PUMP FROM ONE END OF SAID HOUSING TO THE OTHER AND FOR AFFORDING THE PASSAGE OF SENSING INSTRUMENTS AND THE LIKE THROUGH SAID UNIT, MANS FOR ACTUATING SAID PUMP TO CIRCULATE FLUID FROM SAID INLET TO SAID OUTLET, REMOVABLE CLOSURE MEANS POSITIONED IN SAID BYPASS FOR CLOSING SAID BYPASS WHEREBY SAID PUMP IS EFFECTIVE TO PUMP FLUID INTO SAID UNIT AT ONE END AND OUT THE OTHER, AND MEANS OPERATIVELY ASSOCIATED WITH SAID CLOSURE MEANS FOR FACILITATING THE CONTROL FROM OUTSIDE SAID HOUSING OF THE REMOVAL OF SAID CLOSURE MEANS FOR SAID BYPASS WHEREBY SAID PUMPING UNIT MAY BE LEFT IN POSITION IN A WELL AND SAID CLOSURE MEANS REMOVED TO AFFORD ACCESS TO THE RESERVOIR FORMATION BELOW THE PUMP UNIT.
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) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |