US3100538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tubing rotary swivel assembly
Assignee: Houston Oil Field Material Co Inc
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Filing: 1961-12-12
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Granted: 1963-08-13
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Expires: 1981-12-12
Abstract
No abstract record available.
Inventors
- 👤 Wilfred E Sanders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:56
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/02; E21B17/04; E21B17/06; E21B17/05
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
198 words
IN A WELL TUBING IN A WELL BORE IN WHICH THE UPPER END OF THE TUBING IS ADAPTED TO BE ROTATED AND THE LOWER END OF THE TUBING IS ADAPTED TO BE THREADABLY SECURED IN THE WELL BORE, THE IMPROVEMENT IN A ROTARY SWIVEL JOINT COMPRISING, FIRST AND SECOND PIPE JOINTS AXIALLY ALIGNED, THE FIRST OF WHICH IS SECURED TO THE LOWER END OF THE TUBING AND THE SECOND OF WHICH IS SECURED TO THE UPPER END OF THE TUBING, CLUTCH MEANS CONNECTED TO ADJACENT ENDS OF SAID PIPE JOINTS AND ADAPTED TO TRANSMIT ROTATIONAL MOVEMENT BETWEEN SAID JOINTS IN A DIRECTION TO RELEAST THE LOWER END OF THE WELL TUBING, SAID JOINTS HAVING AN ANNULAR RECESS AT SAID ADJACENT ENDS, A TUBULAR MANDREL POSITIONED IN SAID ANNULAR RECESS AND HAVING AN INTERNAL DIAMETER NO GREATER THAN THE INTERNAL DIAMETER OF THE TUBING THEREBY PROVIDING UNRESTRICTED FLOW THROUGH THE INTERIOR OF SAID JOINTS, SAID MANDREL BEING ATTACHED TO THE FIRST OF SAID JOINTS AND LONGITUDINALLY AND ROTATABLY SLIDABLE WITH RESPECT TO THE SECOND JOINT, A STOP SHOULDER ON EACH OF SAID MANDREL AND SECOND JOINT ADAPTED TO COACT THEREBY PREVENTING DISCONNECTION OF SAID MANDREL FROM THE SECOND JOINT,
Claim 2
Dependent Claim
198 words
IN A WELL TUBING IN A WELL BORE IN WHICH THE UPPER END OF THE TUBING IS ADAPTED TO BE ROTATED AND THE LOWER END OF THE TUBING IS ADAPTED TO BE THREADABLY SECURED IN THE WELL BORE, THE IMPROVEMENT IN A ROTARY SWIVEL JOINT COMPRISING, FIRST AND SECOND PIPE JOINTS AXIALLY ALIGNED, THE FIRST OF WHICH IS SECURED TO THE LOWER END OF THE TUBING AND THE SECOND OF WHICH IS SECURED TO THE UPPER END OF THE TUBING, CLUTCH MEANS CONNECTED TO ADJACENT ENDS OF SAID PIPE JOINTS AND ADAPTED TO TRANSMIT ROTATIONAL MOVEMENT BETWEEN SAID JOINTS IN A DIRECTION TO RELEAST THE LOWER END OF THE WELL TUBING, SAID JOINTS HAVING AN ANNULAR RECESS AT SAID ADJACENT ENDS, A TUBULAR MANDREL POSITIONED IN SAID ANNULAR RECESS AND HAVING AN INTERNAL DIAMETER NO GREATER THAN THE INTERNAL DIAMETER OF THE TUBING THEREBY PROVIDING UNRESTRICTED FLOW THROUGH THE INTERIOR OF SAID JOINTS, SAID MANDREL BEING ATTACHED TO THE FIRST OF SAID JOINTS AND LONGITUDINALLY AND ROTATABLY SLIDABLE WITH RESPECT TO THE SECOND JOINT, A STOP SHOULDER ON EACH OF SAID MANDREL AND SECOND JOINT ADAPTED TO COACT THEREBY PREVENTING DISCONNECTION OF SAID MANDREL FROM THE SECOND JOINT,
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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) | 1966-08-12 | 1967-02-11 | 1967-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-12 | 1971-02-11 | 1971-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-12 | 1975-02-11 | 1975-08-13 | $7700.00 | Window Closed / Lapsed |