Patent US2741915A successfully refreshed from Google Patents.
US2741915A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for pumping and weighing wells
Assignee: Individual
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Filing: 1952-10-24
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Granted: 1956-04-17
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Expires: 1972-10-24
Abstract
No abstract record available.
Inventors
- 👤 Harry J Renken
- 👤 Harry W Shelton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:17
CPC Classifications
F; F04; F04B; F04B47/00; F04B47/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
IN APPARATUS FOR PUMPING FLUID FROM WELLS, THE COMBINATION OF A CARRIER FRAME, MEANS ON SAID CARRIER FRAME CONNECTING THE FRAME TO A GENERALLY VERTICALLY RECIPROCABLE, POWER DRIVEN ELEMENT, SAID CARRIER FRAME HAVING AT LEAST ONE HORIZONTAL BEARING SURFACE, SAID CARRIER FRAME BEING PROVIDED WITH A VERTICAL PASSAGEWAY WHICH EXTENDS CENTRALLY THROUGH EACH SAID BEARING SURFACE, A POLISHED ROD SLIDABLY EXTENDING THROUGH SAID PASSAGEWAY IN SAID CARRIER FRAME, A PAIR OF SPACED-APART, VERTICALLY ALIGNED CLAMPS ON SAID POLISHED ROD, EACH OF SAID CLAMPS BEING POSITIONED ABOVE AT LEAST ONE BEARING SURFACE OF SAID CARRIER FRAME AND ADAPTED WHEN IN CLAMPING ENGAGEMENT WITH SAID POLISHED ROD FOR SUPPORTING SAID POLISHED ROD AND POSITIONING SAID POLISHED ROD RELATIVE TO SAID CARRIER FRAME, AT LEAST ONE OF SAID CLAMPS BEING IN CLAMPING ENGAGEMENT WITH SAID POLISHED ROD SO AS TO PREVENT SAID POLISHED ROD FROM BECOMING DISENGAGED FROM SAID CARRIER FRAME, AND
Claim 2
Dependent Claim
149 words
IN APPARATUS FOR PUMPING FLUID FROM WELLS, THE COMBINATION OF A CARRIER FRAME, MEANS ON SAID CARRIER FRAME CONNECTING THE FRAME TO A GENERALLY VERTICALLY RECIPROCABLE, POWER DRIVEN ELEMENT, SAID CARRIER FRAME HAVING AT LEAST ONE HORIZONTAL BEARING SURFACE, SAID CARRIER FRAME BEING PROVIDED WITH A VERTICAL PASSAGEWAY WHICH EXTENDS CENTRALLY THROUGH EACH SAID BEARING SURFACE, A POLISHED ROD SLIDABLY EXTENDING THROUGH SAID PASSAGEWAY IN SAID CARRIER FRAME, A PAIR OF SPACED-APART, VERTICALLY ALIGNED CLAMPS ON SAID POLISHED ROD, EACH OF SAID CLAMPS BEING POSITIONED ABOVE AT LEAST ONE BEARING SURFACE OF SAID CARRIER FRAME AND ADAPTED WHEN IN CLAMPING ENGAGEMENT WITH SAID POLISHED ROD FOR SUPPORTING SAID POLISHED ROD AND POSITIONING SAID POLISHED ROD RELATIVE TO SAID CARRIER FRAME, AT LEAST ONE OF SAID CLAMPS BEING IN CLAMPING ENGAGEMENT WITH SAID POLISHED ROD SO AS TO PREVENT SAID POLISHED ROD FROM BECOMING DISENGAGED FROM SAID CARRIER FRAME, AND
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) | 1959-04-17 | 1959-10-17 | 1960-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-17 | 1963-10-17 | 1964-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-17 | 1967-10-17 | 1968-04-17 | $7700.00 | Window Closed / Lapsed |