US3245485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tubing cutter
Assignee: Schlumberger Well Surveying Corp
•
Filing: 1963-11-08
•
Granted: 1966-04-12
•
Expires: 1983-11-08
Abstract
No abstract record available.
Inventors
- 👤 William T Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:34
CPC Classifications
E; E21; E21B; E21B29/00; E21B29/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
AN APPARATUS FOR SUSPENSION IN A WELL TUBING INCLUDING: AN UPPER TUBULAR HOUSING MEMBER HAVING UPPERINTERMEDIATE, AND LOWER WALL SECTIONS ABOUT A HOLLOW INTERIOR, SAID UPPER HOUSING SECTION HAVING MEANS ADAPTED FOR SECURING THE APPARATUS TO A LOWERING DEVICE, SAID LOWER WALL SECTION HAVING A THIN-WALLED SECTION, A LOWER TUBULAR HOUSING MEMBER SIZED FOR RECEPTION INTO SAID LOWER HOUSING SECTION AND ADAPTED TO BE TELESCOPICALLY RECEIVED THEREIN, SAID LOWER TUBULAR HOUSING MEMBER HAVING A CENTRAL OPENING FOR EXTERNAL ACCESS THEREINTO, ANNULAR SHAPED CHARGE MEANS HAVING A BORE THERETHROUGH AND ARRANGED FOR POSITIONING IN SAID UPPER AND LOWER HOUSING MEMBERS TO FACE THE THIN-WALLED SECTION TO SAID UPPER TUBULAR HOUSING MEMBER, THE INTERMEDIATE WALL SECTION OF SAID
Claim 2
Independent Claim
116 words
AN APPARATUS FOR SUSPENSION IN A WELL TUBING INCLUDING: AN UPPER TUBULAR HOUSING MEMBER HAVING UPPERINTERMEDIATE, AND LOWER WALL SECTIONS ABOUT A HOLLOW INTERIOR, SAID UPPER HOUSING SECTION HAVING MEANS ADAPTED FOR SECURING THE APPARATUS TO A LOWERING DEVICE, SAID LOWER WALL SECTION HAVING A THIN-WALLED SECTION, A LOWER TUBULAR HOUSING MEMBER SIZED FOR RECEPTION INTO SAID LOWER HOUSING SECTION AND ADAPTED TO BE TELESCOPICALLY RECEIVED THEREIN, SAID LOWER TUBULAR HOUSING MEMBER HAVING A CENTRAL OPENING FOR EXTERNAL ACCESS THEREINTO, ANNULAR SHAPED CHARGE MEANS HAVING A BORE THERETHROUGH AND ARRANGED FOR POSITIONING IN SAID UPPER AND LOWER HOUSING MEMBERS TO FACE THE THIN-WALLED SECTION TO SAID UPPER TUBULAR HOUSING MEMBER, THE INTERMEDIATE WALL SECTION OF SAID
References Cited (Backward Citations)
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Cited
US3101051A
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US2935944A
Cited
US3057295A
Cited
US3053182A
Cited
US3087369A
Cited
US3150590A
Cited
US3139031A
Cited
US3192857A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |