Patent US3136365A successfully refreshed from Google Patents.
US3136365A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Packer with spring biased threaded slips
Assignee: Baker Hughes Oilfield Operations LLC
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Filing: 1961-10-09
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Granted: 1964-06-09
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Expires: 1981-10-09
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Carter
- 👤 James C Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:39
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
128 words
IN WELL APPARATUS ADAPTED TO BE SET IN A WELL BORE; A BODY ADAPTED TO BE LOWERED IN THE WELL BORE ON A RUNNING-IN STRING; NORMALLY RETRACTED MEANS ON SAID BODY INCLUDING A SET OF SEGMENTAL SLIPS SHIFTABLE WITH RESPECT TO SAID BODY AND EXPANDIBLE LATERALLY OUTWARDLY OF SAID BODY, SAID SLIPS HAVING AN INNER GROOVE EXTENDING CIRCUMFERENTIALLY THEREAROUND; AN EXPANSIBLE SPRING BAND WITHIN SAID GROOVE ENGAGING SAID SLIPS TO SHIFT SAID SLIPS LATERALLY OUTWARDLY AND TO HOLD SAID SLIPS IN TRANSVERSE ALIGNMENT; RETAINER MEANS ENGAGING SAID SLIPS TO PREVENT SAID BAND FROM EXPANDING SAID SLIPS; AND MEANS RESPONSIVE TO MOVEMENT OF THE RUNNING-IN STRING AND BODY TO RELATIVELY SHIFT SAID RETAINER MEANS FROM ENGAGEMENT WITH SAID SLIPS, WHEREBY SAID SPRING BAND CAN EXPAND SAID SLIPS LATERALLY OUTWARDLY.
Claim 2
Dependent Claim
128 words
IN WELL APPARATUS ADAPTED TO BE SET IN A WELL BORE; A BODY ADAPTED TO BE LOWERED IN THE WELL BORE ON A RUNNING-IN STRING; NORMALLY RETRACTED MEANS ON SAID BODY INCLUDING A SET OF SEGMENTAL SLIPS SHIFTABLE WITH RESPECT TO SAID BODY AND EXPANDIBLE LATERALLY OUTWARDLY OF SAID BODY, SAID SLIPS HAVING AN INNER GROOVE EXTENDING CIRCUMFERENTIALLY THEREAROUND; AN EXPANSIBLE SPRING BAND WITHIN SAID GROOVE ENGAGING SAID SLIPS TO SHIFT SAID SLIPS LATERALLY OUTWARDLY AND TO HOLD SAID SLIPS IN TRANSVERSE ALIGNMENT; RETAINER MEANS ENGAGING SAID SLIPS TO PREVENT SAID BAND FROM EXPANDING SAID SLIPS; AND MEANS RESPONSIVE TO MOVEMENT OF THE RUNNING-IN STRING AND BODY TO RELATIVELY SHIFT SAID RETAINER MEANS FROM ENGAGEMENT WITH SAID SLIPS, WHEREBY SAID SPRING BAND CAN EXPAND SAID SLIPS LATERALLY OUTWARDLY.
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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 |