US3136366A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupling devices
Assignee: BROWN
•
Filing: 1958-08-22
•
Granted: 1964-06-09
•
Expires: 1978-08-22
Abstract
No abstract record available.
Inventors
- 👤 Cicero C Brown
- 👤 Chudleigh B Cochran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:29
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/02; E21B17/04; E21B17/046; E21B17/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
A COUPLING DEVICE FOR USE WITH A WELL CONDUCTOR INCLUDING, AN OUTER TUBULAR HOUSING MEMBER HAVING A LOCKING RECESS THEREIN, AN INNER COUPLING MEMBER INSERTABLE WITHIN SAID OUTER HOUSING MEMBER AND COMPRISING A MANDREL, SAID MANDREL BEING CONNECTED TO SAID CONDUCTOR SO THAT AN UPWARD PULL ON SAID CONDUCTOR IMPARTS AN UPWARD PULL TO SAID MANDREL, A LATCH ELEMENT CARRIED BY THE MANDREL AND MOVABLE RADIALLY THEREOF, SAID LATCH ELEMENT BEING ENGAGEABLE WITHIN THE LOCKING RECESS WHEN THE INNER MEMBER IS WITHIN THE HOUSING MEMBER, A SLEEVE SLIDABLE RELATIVE TO THE MANDREL AND LATCH ELEMENT FOR URGING THE LATCH ELEMENT OUTWARDLY, MEANS FOR URGING THE SLEEVE IN A DIRECTION TO MAINTAIN THE LATCH ELEMENT WITHIN SAID RECESS, AND CAM SURFACES ON THE LATCHING ELEMENT AND SLEEVE ACTUATED BY THE APPLICATION OF A PREDETERMINED PULLING FORCE UPON THE CONDUCTOR AND MANDREL FOR RELEASING THE LATCH ELEMENT FROM THE LOCKING RECESS TO PERMIT SEPARATION OF THE INNER AND OUTER MEMBERS.
Claim 2
Dependent Claim
158 words
A COUPLING DEVICE FOR USE WITH A WELL CONDUCTOR INCLUDING, AN OUTER TUBULAR HOUSING MEMBER HAVING A LOCKING RECESS THEREIN, AN INNER COUPLING MEMBER INSERTABLE WITHIN SAID OUTER HOUSING MEMBER AND COMPRISING A MANDREL, SAID MANDREL BEING CONNECTED TO SAID CONDUCTOR SO THAT AN UPWARD PULL ON SAID CONDUCTOR IMPARTS AN UPWARD PULL TO SAID MANDREL, A LATCH ELEMENT CARRIED BY THE MANDREL AND MOVABLE RADIALLY THEREOF, SAID LATCH ELEMENT BEING ENGAGEABLE WITHIN THE LOCKING RECESS WHEN THE INNER MEMBER IS WITHIN THE HOUSING MEMBER, A SLEEVE SLIDABLE RELATIVE TO THE MANDREL AND LATCH ELEMENT FOR URGING THE LATCH ELEMENT OUTWARDLY, MEANS FOR URGING THE SLEEVE IN A DIRECTION TO MAINTAIN THE LATCH ELEMENT WITHIN SAID RECESS, AND CAM SURFACES ON THE LATCHING ELEMENT AND SLEEVE ACTUATED BY THE APPLICATION OF A PREDETERMINED PULLING FORCE UPON THE CONDUCTOR AND MANDREL FOR RELEASING THE LATCH ELEMENT FROM THE LOCKING RECESS TO PERMIT SEPARATION OF THE INNER AND OUTER MEMBERS.
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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) | 1967-06-09 | 1967-12-09 | 1968-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-09 | 1971-12-09 | 1972-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-09 | 1975-12-09 | 1976-06-09 | $7700.00 | Window Closed / Lapsed |