Patent US3241616A successfully refreshed from Google Patents.
US3241616A
Expired / Lapsed
US
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Anchoring means for well tools
Assignee: Otis Engineering Corp
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Filing: 1962-12-20
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Granted: 1966-03-22
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Expires: 1982-12-20
Abstract
No abstract record available.
Inventors
- 👤 Roland O Cox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:29
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/129; E21B33/1291; E21B33/1292
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
184 words
A WELL PACKER INCLUDING: AN ELONGATE MANDREL HAVING A PAIR OF LONGITUDINALLY SPACED SETS OF NORMALLY RETRACTED EXPANSIBLE GRIPPING SLIPS MOUNTED THEREON; EXPANDER MEANS ON SAID MANDREL MOVABLE WITH RESPECT TO SAID SLIPS TO EXPAND SAID SLIP OUTWARDLY RELATIVE TO SAID MANDREL; PACKING MEANS ON SAID MANDREL BETWEEN SAID SET OF SLIPS AND EXPANDER MEANS AND ADAPTED TO BE DISTORTED INTO EXPANDED SEALING POSITION BY MOVEMENT OF SAID SETS OF SLIPS AND SAID EXPANDER MEANS TOWARD EACH OTHER; A LOCKING SLEEVE CARRIED BY SAID MANDREL AND TELESCOPING A PORTION OF ONE OF THE SETS OF SLIPS ON SAID MANDREL WHEN SAID SLIPS ARE IN RETRACTED POSITION AND ADAPTED TO PREVENT MOVEMENT OF SAID ONE SET OF SLIPS FROM RETRACTED POSITION TO EXPANDED POSITION; AND MEANS ON SAID MANDREL AND ENGAGEABLE WITH SAID LOCKING SLEEVE FOR MOVING SAID LOCKING SLEEVE LONGITUDINALLY RELATIVE TO SAID ONE SET OF SLIPS OUT OF TELESCOPING POSITION WITH RESPECT TO SAID ONE SET OF SLIPS UPON ROTATION OF SAID MANDREL RELATIVE OF SAID LOCKING SLEEVE TO PERMIT SAID ONE SET OF SLIP TO MOVE OUTWARDLY FROM RETRACTED TO EXPANDED POSITION.
Claim 2
Dependent Claim
184 words
A WELL PACKER INCLUDING: AN ELONGATE MANDREL HAVING A PAIR OF LONGITUDINALLY SPACED SETS OF NORMALLY RETRACTED EXPANSIBLE GRIPPING SLIPS MOUNTED THEREON; EXPANDER MEANS ON SAID MANDREL MOVABLE WITH RESPECT TO SAID SLIPS TO EXPAND SAID SLIP OUTWARDLY RELATIVE TO SAID MANDREL; PACKING MEANS ON SAID MANDREL BETWEEN SAID SET OF SLIPS AND EXPANDER MEANS AND ADAPTED TO BE DISTORTED INTO EXPANDED SEALING POSITION BY MOVEMENT OF SAID SETS OF SLIPS AND SAID EXPANDER MEANS TOWARD EACH OTHER; A LOCKING SLEEVE CARRIED BY SAID MANDREL AND TELESCOPING A PORTION OF ONE OF THE SETS OF SLIPS ON SAID MANDREL WHEN SAID SLIPS ARE IN RETRACTED POSITION AND ADAPTED TO PREVENT MOVEMENT OF SAID ONE SET OF SLIPS FROM RETRACTED POSITION TO EXPANDED POSITION; AND MEANS ON SAID MANDREL AND ENGAGEABLE WITH SAID LOCKING SLEEVE FOR MOVING SAID LOCKING SLEEVE LONGITUDINALLY RELATIVE TO SAID ONE SET OF SLIPS OUT OF TELESCOPING POSITION WITH RESPECT TO SAID ONE SET OF SLIPS UPON ROTATION OF SAID MANDREL RELATIVE OF SAID LOCKING SLEEVE TO PERMIT SAID ONE SET OF SLIP TO MOVE OUTWARDLY FROM RETRACTED TO EXPANDED POSITION.
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) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |