US3088533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sleeve valve and oil well tool embodying the same
Assignee: Individual
•
Filing: 1959-04-27
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Granted: 1963-05-07
•
Expires: 1979-04-27
Abstract
No abstract record available.
Inventors
- 👤 Wayne N Sutliff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:09
CPC Classifications
E; E21; E21B; E21B34/00; E21B34/06; E21B34/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
A SLEEVE VALVE ADAPTED TO BE AXIALLY SHIFTABLE ON THE INNER MANDREL OF AN OIL TOOL HAVING TELESCOPICALLY RELATED INNER AND OUTER MANDRELS CONFINING A BODY OF LIQUID THEREBETWEEN, SAID INNER MADREL HAVING A STOP AT ONE END OF THE VALVE AND AN ANNULAR SHOULDER WITH A GROUND SEAT AT THE OTHER END OF SAID VALVE, SAID OUTER MANDREL HAVING A BORE WITHIN WHICH SAID VALVE SLIDABLY FITS TO EFFECT A RETARDING ACTION ON TELESCOPIC MOVEMENT BETWEEN SAID MANDRELS IN A DIRECTION WHICH FRICTIONALLY URGES SAID VALVE AGAINST SAID GROUND SEAT, BY LIMITING THE FLOW OF LIQUID PAST SAID VALVE TO THAT WHICH WILL FLOW THROUGH THE ANNULAR PERIPHERAL PASSAGE BETWEEN SAID VALVE AND SAID BORE, SAID SLEEVE VALVE COMPRISING AN ANNULAR SLEEVE HAVING A GROUND FACE AT ONE END THEREOF IN A PLANE NORMAL TO THE AXIS OF SAID SLEEVE, AND FACE BEING ADAPTED
Claim 2
Dependent Claim
145 words
A SLEEVE VALVE ADAPTED TO BE AXIALLY SHIFTABLE ON THE INNER MANDREL OF AN OIL TOOL HAVING TELESCOPICALLY RELATED INNER AND OUTER MANDRELS CONFINING A BODY OF LIQUID THEREBETWEEN, SAID INNER MADREL HAVING A STOP AT ONE END OF THE VALVE AND AN ANNULAR SHOULDER WITH A GROUND SEAT AT THE OTHER END OF SAID VALVE, SAID OUTER MANDREL HAVING A BORE WITHIN WHICH SAID VALVE SLIDABLY FITS TO EFFECT A RETARDING ACTION ON TELESCOPIC MOVEMENT BETWEEN SAID MANDRELS IN A DIRECTION WHICH FRICTIONALLY URGES SAID VALVE AGAINST SAID GROUND SEAT, BY LIMITING THE FLOW OF LIQUID PAST SAID VALVE TO THAT WHICH WILL FLOW THROUGH THE ANNULAR PERIPHERAL PASSAGE BETWEEN SAID VALVE AND SAID BORE, SAID SLEEVE VALVE COMPRISING AN ANNULAR SLEEVE HAVING A GROUND FACE AT ONE END THEREOF IN A PLANE NORMAL TO THE AXIS OF SAID SLEEVE, AND FACE BEING ADAPTED
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) | 1966-05-06 | 1966-11-05 | 1967-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-06 | 1970-11-05 | 1971-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-06 | 1974-11-05 | 1975-05-07 | $7700.00 | Window Closed / Lapsed |