Patent US3606797A successfully refreshed from Google Patents.
US3606797A
Expired / Lapsed
US
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Polishing rod alignment bearing in well pumping apparatus
Assignee: Individual
•
Filing: 1969-09-09
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Granted: 1971-09-21
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Expires: 1989-09-09
Abstract
Abstract A TWO-PART SELF-ALIGNING THRUST BEARING IS INTERPOSED BETWEEN THE TOP FACE OF THE CARRIER BAR AND THE BOTTOM FACE OF THE POLISHED ROD CLAMP IN SURROUNDING RELATIONSHIP TO THE POLISHED ROD. THE ARRANGEMENT RELIEVES THE POLISHED ROD OF BENDING STRESSES WHICH OCCUR WHEN THERE IS MISALIGNMENT OF THE BOTTOM SURFACE OF THE CLAMP OR TOP SURFACE OF THE CARRIER BAR WITH RESPECT TO THE AXIS OF THE POLISHED ROD.
Inventors
- 👤 George G Browning Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:06
CPC Classifications
F; F16; F16C; F16C23/00; F16C23/02; F16C23/04; F16C23/043; F04; F04B; F04B47/00; F04B47/02; F04B47/028; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18176; Y10T74/18182; Y10T74/18888; Y10T74/1892
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |