US3077933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tubing anchor and catcher apparatus
Assignee: Baker Hughes Oilfield Operations LLC
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Filing: 1961-09-18
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Granted: 1963-02-19
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Expires: 1981-09-18
Abstract
No abstract record available.
Inventors
- 👤 Herbert L Bigelow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:48
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/02; E21B43/10; E21B23/00; E21B23/01; E21B40/00; E21B40/001
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
IN TUBING ANCHOR AND CATCHER APPARATUS TO BE DISPOSED IN A CONDUIT STRING: A TUBULAR BODY ADAPTED TO BE CONNECTED TO A TUBING STRING AND HAVING A RIGHT-HAND THREADED PORTION AND A LEFT-HAND THREADED PORTION; UPPER AND LOWER EXPANDER STRUCTURES ON SAID BODY, ONE OF SAID EXPANDER STRUCTURES HAVING A RIGHT-HAND THREADED PORTION MESHING WITH SAID BODY RIGHT-HAND THREADED PORTION AND THE OTHER OF SAID EXPANDER STRUCTURES HAVING A LEFT-HAND THREADED PORTION MESHING WITH SAID BODY LEFT-HAND THREADED PORTION; SLIPS BETWEEN AND ENGAGEABLE WITH SAID EXPANDER STRUCTURES; MEANS CONNECTED TO SAID EXPANDER STRUCTURES AND ENGAGEABLE WITH THE WELL CONDUIT TO RESIST ROTATION OF SAID EXPANDER STRUCTURES, WHEREBY ROTATION OF SAID BODY THREADS SAID EXPANDER STRUCTURES ALONG SAID BODY TOWARD EACH OTHER AND BEHIND SAID SLIPS TO EXPAND SAID SLIPS AGAINST THE WELL CONDUIT TO PREVENT MOVEMENT OF THE APPARATUS IN BOTH LONGITUDINAL DIRECTIONS; AND SWIVEL
Claim 2
Dependent Claim
145 words
IN TUBING ANCHOR AND CATCHER APPARATUS TO BE DISPOSED IN A CONDUIT STRING: A TUBULAR BODY ADAPTED TO BE CONNECTED TO A TUBING STRING AND HAVING A RIGHT-HAND THREADED PORTION AND A LEFT-HAND THREADED PORTION; UPPER AND LOWER EXPANDER STRUCTURES ON SAID BODY, ONE OF SAID EXPANDER STRUCTURES HAVING A RIGHT-HAND THREADED PORTION MESHING WITH SAID BODY RIGHT-HAND THREADED PORTION AND THE OTHER OF SAID EXPANDER STRUCTURES HAVING A LEFT-HAND THREADED PORTION MESHING WITH SAID BODY LEFT-HAND THREADED PORTION; SLIPS BETWEEN AND ENGAGEABLE WITH SAID EXPANDER STRUCTURES; MEANS CONNECTED TO SAID EXPANDER STRUCTURES AND ENGAGEABLE WITH THE WELL CONDUIT TO RESIST ROTATION OF SAID EXPANDER STRUCTURES, WHEREBY ROTATION OF SAID BODY THREADS SAID EXPANDER STRUCTURES ALONG SAID BODY TOWARD EACH OTHER AND BEHIND SAID SLIPS TO EXPAND SAID SLIPS AGAINST THE WELL CONDUIT TO PREVENT MOVEMENT OF THE APPARATUS IN BOTH LONGITUDINAL DIRECTIONS; AND SWIVEL
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) | 1966-02-18 | 1966-08-20 | 1967-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-18 | 1970-08-20 | 1971-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-18 | 1974-08-20 | 1975-02-19 | $7700.00 | Window Closed / Lapsed |