US2751017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retrievable well packer
Assignee: Baker Hughes Oilfield Operations LLC
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Filing: 1953-09-08
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Granted: 1956-06-19
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Expires: 1973-09-08
Abstract
No abstract record available.
Inventors
- 👤 Reuben C Baker
- 👤 Martin B Conrad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:23
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
137 words
IN APPARATUS OF THE CHARACTER DESCRIBED: A BODY; AN INNER EXPANDER ON SAID BODY; A SEGMENTAL OUTER EXPANDER SLIDABLE ON SAID INNER EXPANDER AND INITIALLY OCCUPYING A RETRACTED POSITION ON SAID INNER EXPANDER: SLIPS ENGAGEABLE WITH SAID EXPANDER TO BE EXPANDED LATERALLY OUTWARD SAID INNER AND OUTER EXPANDERS HAVING COENGAGING SURFACES TAPERING IN ONE LONGITUDINAL DIRECTION TOWARD THE AXIS OF SAID BODY SAID INNER AND OUTER EXPANDERS ALSO HAVING COENGAGING SURFACES FACING OUTWARDLY AND INWARDLY, RESPECTIVELY, AND DISPOSED SUBSTANTIALLY PARALLEL TO THE AXIS OF SAID BODY WHICH ENGAGE EACH OTHER TO HOLD SAID OUTER EXPANDER LATERALLY OUTWARD SAID OUTER EXPANDER AND SLIPS HAVING COENGAGING SURFACES TAPERING IN THE OPPOSITE LONGITUDINAL DIRECTION TOWARD THE AXIS OF THE BODY; MEANS ON SAID BODY FOR MOVING SAID INNER EXPANDER LONGITUDINALLY OF SAID OUTER EXPANDER TO SHIFT SAID OUTER EXPANDER LATER-
Claim 2
Dependent Claim
137 words
IN APPARATUS OF THE CHARACTER DESCRIBED: A BODY; AN INNER EXPANDER ON SAID BODY; A SEGMENTAL OUTER EXPANDER SLIDABLE ON SAID INNER EXPANDER AND INITIALLY OCCUPYING A RETRACTED POSITION ON SAID INNER EXPANDER: SLIPS ENGAGEABLE WITH SAID EXPANDER TO BE EXPANDED LATERALLY OUTWARD SAID INNER AND OUTER EXPANDERS HAVING COENGAGING SURFACES TAPERING IN ONE LONGITUDINAL DIRECTION TOWARD THE AXIS OF SAID BODY SAID INNER AND OUTER EXPANDERS ALSO HAVING COENGAGING SURFACES FACING OUTWARDLY AND INWARDLY, RESPECTIVELY, AND DISPOSED SUBSTANTIALLY PARALLEL TO THE AXIS OF SAID BODY WHICH ENGAGE EACH OTHER TO HOLD SAID OUTER EXPANDER LATERALLY OUTWARD SAID OUTER EXPANDER AND SLIPS HAVING COENGAGING SURFACES TAPERING IN THE OPPOSITE LONGITUDINAL DIRECTION TOWARD THE AXIS OF THE BODY; MEANS ON SAID BODY FOR MOVING SAID INNER EXPANDER LONGITUDINALLY OF SAID OUTER EXPANDER TO SHIFT SAID OUTER EXPANDER LATER-
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) | 1959-06-19 | 1959-12-19 | 1960-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-19 | 1963-12-19 | 1964-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-19 | 1967-12-19 | 1968-06-19 | $7700.00 | Window Closed / Lapsed |