US3166125A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable casing head
Assignee: Texaco Inc
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Filing: 1961-11-20
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Granted: 1965-01-19
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Expires: 1981-11-20
Abstract
No abstract record available.
Inventors
- 👤 Laurence M Hubby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:41
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/02; E21B33/03; E21B33/04; E21B33/0415
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
IN COMBINATION WITH A DEEP WELL HAVING SURFACE PIPE SET THEREIN FOR BEARING THE LOAD OF A LONG CASING STRING SET IN SAID WELL, SAID CASING STRING BEING CEMENTED NEAR THE LOWER EXTREMITY THEREOF INTO SAID WELL, FIRST COLLAR MEANS ATTACHED TO THE UPPER END OF SAID CASING STRING, SECOND COLLAR MEANS ATTACHED TO THE UPPER END OF SAID SURFACE PIPE ADJACENT TO SAID FIRST COLLAR MEANS, AND MEANS FOR ADJUSTABLY SUPPORTING SAID FIRST COLLAR MEANS ON SAID SECOND COLLAR MEANS, SAID SUPPORTING MEANS COMPRISING SCREW THREADS ON SAID FIRST COLLAR MEANS, AN ANNULAR LOAD BEARING MEMBER HAVING COMPLEMENTARY THREADS MESHING WITH SAID SCREW THREADS, AND MEANS FOR ROTATABLY SUPPORTING SAID ANNULAR MEMBER ON SAID SECOND COLLAR MEANS.
Claim 2
Dependent Claim
118 words
IN COMBINATION WITH A DEEP WELL HAVING SURFACE PIPE SET THEREIN FOR BEARING THE LOAD OF A LONG CASING STRING SET IN SAID WELL, SAID CASING STRING BEING CEMENTED NEAR THE LOWER EXTREMITY THEREOF INTO SAID WELL, FIRST COLLAR MEANS ATTACHED TO THE UPPER END OF SAID CASING STRING, SECOND COLLAR MEANS ATTACHED TO THE UPPER END OF SAID SURFACE PIPE ADJACENT TO SAID FIRST COLLAR MEANS, AND MEANS FOR ADJUSTABLY SUPPORTING SAID FIRST COLLAR MEANS ON SAID SECOND COLLAR MEANS, SAID SUPPORTING MEANS COMPRISING SCREW THREADS ON SAID FIRST COLLAR MEANS, AN ANNULAR LOAD BEARING MEMBER HAVING COMPLEMENTARY THREADS MESHING WITH SAID SCREW THREADS, AND MEANS FOR ROTATABLY SUPPORTING SAID ANNULAR MEMBER ON SAID SECOND COLLAR MEANS.
References Cited (Backward Citations)
US197538A
Cited
US1627945A
Cited
US1825774A
Cited
US1888550A
Cited
US1898649A
Cited
US2262490A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-01-19 | 1968-07-20 | 1969-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-01-19 | 1972-07-20 | 1973-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-01-19 | 1976-07-20 | 1977-01-19 | $7700.00 | Window Closed / Lapsed |