US2836247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extension of effective length of tubing
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1954-05-17
•
Granted: 1958-05-27
•
Expires: 1974-05-17
Abstract
No abstract record available.
Inventors
- 👤 Thomas B Mcculloch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:26
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/02; E21B17/04; E21B17/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
APPARATUS FOR USE IN WELL COMPLETION OPERATIONS AND THE LIKE WHICH COMPRISES A TUBULAR MANDREL MEMBER ADAPTED TO BE CONNECTED TO A TUBING STRING, A TUBULAR EXTENSION MEMBER SLIDABLY MOUNTED ON AND EXTENSIBLE BELOW SAID TUBULAR MANDREL MEMBER, RELEASABLE LATCHING MEANS ON ONE OF SAID TUBULAR MEMBERS COOPERATING WITH LATCHING MEANS ON SAID OTHER TUBULAR MEMBER AND SUPPROTING SAID TUBULAR EXTENSION MEMBER IS REATRACTED POSITION ON SAID TUBULAR MANDEL MEMBER, AND MEANS ON ONE OF SAID TUBULAR MEMBERS COOPERATING WITH MEANS ON SAID OTHER TUBULAR MEMBER FOR MAINTAINING THE TUBULAR EXTENSION MEMBER AND TUBLAR MANDREL MEMBER IN COUPLED RELATIONSHIP WHEN THE TUBLAR EXTENSION MEMBER IS IN AN EXTENDED POSITION RELATIVE TO SAID TUBULAR MANDREL MEMBER, SAID TUBULAR EXTENSION MEMBER BEING MOVABLE SLIDABLE FROM RETRACTED TO EXTENDED POSITION ON RELEASE OF SAID RELEASABLE LATCHING MEANS.
Claim 2
Dependent Claim
134 words
APPARATUS FOR USE IN WELL COMPLETION OPERATIONS AND THE LIKE WHICH COMPRISES A TUBULAR MANDREL MEMBER ADAPTED TO BE CONNECTED TO A TUBING STRING, A TUBULAR EXTENSION MEMBER SLIDABLY MOUNTED ON AND EXTENSIBLE BELOW SAID TUBULAR MANDREL MEMBER, RELEASABLE LATCHING MEANS ON ONE OF SAID TUBULAR MEMBERS COOPERATING WITH LATCHING MEANS ON SAID OTHER TUBULAR MEMBER AND SUPPROTING SAID TUBULAR EXTENSION MEMBER IS REATRACTED POSITION ON SAID TUBULAR MANDEL MEMBER, AND MEANS ON ONE OF SAID TUBULAR MEMBERS COOPERATING WITH MEANS ON SAID OTHER TUBULAR MEMBER FOR MAINTAINING THE TUBULAR EXTENSION MEMBER AND TUBLAR MANDREL MEMBER IN COUPLED RELATIONSHIP WHEN THE TUBLAR EXTENSION MEMBER IS IN AN EXTENDED POSITION RELATIVE TO SAID TUBULAR MANDREL MEMBER, SAID TUBULAR EXTENSION MEMBER BEING MOVABLE SLIDABLE FROM RETRACTED TO EXTENDED POSITION ON RELEASE OF SAID RELEASABLE LATCHING MEANS.
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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) | 1961-05-26 | 1961-11-25 | 1962-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-26 | 1965-11-25 | 1966-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-26 | 1969-11-25 | 1970-05-27 | $7700.00 | Window Closed / Lapsed |