Patent US3232347A successfully refreshed from Google Patents.
US3232347A
Expired / Lapsed
US
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Mechanically set well packer apparatus
Assignee: Baker Hughes Oilfield Operations LLC
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Filing: 1962-05-07
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Granted: 1966-02-01
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Expires: 1982-05-07
Abstract
No abstract record available.
Inventors
- 👤 Gordon E Thrane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:32
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
117 words
IN WELL APPARATUS ADAPTED TO BE SET IN A WALL BORE: A BODY ADAPTED TO BE LOWERED IN THE WELL BORE ON A RUNNING-IN STRING; AN EXPANDER ON SAID BODY; SEGMENTAL SLIPS ENGAGEABLE BY SAID EXPANDER TO ANCHOR SAID BODY IN THE WELL BORE, SAID SLIPS HAVING AN INTERNAL CIRCUMFERENTIAL GROOVE; OVERLAPPING BAND SPRING ELEMENTS IN SAID GROOVE EXTENDING BETWEEN ADJACENT SLIP SEGMENTS AND CONSTANTIALLY TENDING TO SHIFT SAID SLIP SEGMENTS LATERALLY OUTWARDLY OF SAID BODY; RETAINER MEANS ENGAGING SAID SLIP SEGMENTS TO RETAIN SAID SLIP SEGMENTS IN RETRACTED POSITION; AND MEANS FOR DISENGAGING SAID RETAINER MEANS FROM SAID SLIP SEGMENTS TO PERMIT SAID BAND SPRING ELEMENTS TO SHIFT SAID SLIP SEGMENTS LATERALLY OUTWARDLY OF SAID BODY.
Claim 2
Dependent Claim
117 words
IN WELL APPARATUS ADAPTED TO BE SET IN A WALL BORE: A BODY ADAPTED TO BE LOWERED IN THE WELL BORE ON A RUNNING-IN STRING; AN EXPANDER ON SAID BODY; SEGMENTAL SLIPS ENGAGEABLE BY SAID EXPANDER TO ANCHOR SAID BODY IN THE WELL BORE, SAID SLIPS HAVING AN INTERNAL CIRCUMFERENTIAL GROOVE; OVERLAPPING BAND SPRING ELEMENTS IN SAID GROOVE EXTENDING BETWEEN ADJACENT SLIP SEGMENTS AND CONSTANTIALLY TENDING TO SHIFT SAID SLIP SEGMENTS LATERALLY OUTWARDLY OF SAID BODY; RETAINER MEANS ENGAGING SAID SLIP SEGMENTS TO RETAIN SAID SLIP SEGMENTS IN RETRACTED POSITION; AND MEANS FOR DISENGAGING SAID RETAINER MEANS FROM SAID SLIP SEGMENTS TO PERMIT SAID BAND SPRING ELEMENTS TO SHIFT SAID SLIP SEGMENTS LATERALLY OUTWARDLY OF SAID BODY.
References Cited (Backward Citations)
US3128828A
Cited
US1723600A
Cited
US2133462A
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US2568867A
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US2771957A
Cited
US2962097A
Cited
US3013611A
Cited
US3136365A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-31 | 1969-08-02 | 1970-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-31 | 1973-08-02 | 1974-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-31 | 1977-08-02 | 1978-02-01 | $7700.00 | Window Closed / Lapsed |