US3131764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High temperature packer for well bores
Assignee: Baker Hughes Oilfield Operations LLC
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Filing: 1961-12-11
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Granted: 1964-05-05
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Expires: 1981-12-11
Abstract
No abstract record available.
Inventors
- 👤 John F Muse
- 👤 Herbert L Bigelow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:42
CPC Classifications
E; E21; E21B; E21B23/00; E21B23/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
IN A WELL TOOL ADAPTED TO BE SET IN A WELL CONDUIT DISPOSED IN A BORE HOLE: A BODY; NORMALLY RETRACTED UPPER SLIP MEANS AND NORMALLY RETRACTED LOWER SLIP MEANS ON SAID BODY; UPPER EXPANDER MEANS AND LOWER EXPANDER MEANS ON SAID BODY BETWEEN AND ENGAGING SAID UPPER SLIP MEANS AND LOWER SLIP MEANS, RESPECTIVELY, TO EXPAND SAID UPPER SLIP MEANS AND LOWER SLIP MEANS OUTWARDLY INTO ENGAGEMENT WITH THE WELL CONDUIT; MEANS FOR MOVING SAID UPPER AND LOWER SLIP MEANS RELATIVE TO SAID UPPER AND LOWER EXPANDER MEANS, RESPECTIVELY, TO EXPAND BOTH OF SAID SLIP MEANS AGAINST THE WELL CONDUIT; AND SPRING MEANS BETWEEN AND ENGAGING SAID UPPER EXPANDER MEANS AND LOWER EXPANDER MEANS TO URGE THEM AWAY FROM EACH OTHER TO HOLD SAID UPPER AND LOWER SLIP MEANS ENGAGED WITH THE WELL CONDUIT.
Claim 2
Dependent Claim
135 words
IN A WELL TOOL ADAPTED TO BE SET IN A WELL CONDUIT DISPOSED IN A BORE HOLE: A BODY; NORMALLY RETRACTED UPPER SLIP MEANS AND NORMALLY RETRACTED LOWER SLIP MEANS ON SAID BODY; UPPER EXPANDER MEANS AND LOWER EXPANDER MEANS ON SAID BODY BETWEEN AND ENGAGING SAID UPPER SLIP MEANS AND LOWER SLIP MEANS, RESPECTIVELY, TO EXPAND SAID UPPER SLIP MEANS AND LOWER SLIP MEANS OUTWARDLY INTO ENGAGEMENT WITH THE WELL CONDUIT; MEANS FOR MOVING SAID UPPER AND LOWER SLIP MEANS RELATIVE TO SAID UPPER AND LOWER EXPANDER MEANS, RESPECTIVELY, TO EXPAND BOTH OF SAID SLIP MEANS AGAINST THE WELL CONDUIT; AND SPRING MEANS BETWEEN AND ENGAGING SAID UPPER EXPANDER MEANS AND LOWER EXPANDER MEANS TO URGE THEM AWAY FROM EACH OTHER TO HOLD SAID UPPER AND LOWER SLIP MEANS ENGAGED WITH THE WELL CONDUIT.
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) | 1967-05-05 | 1967-11-04 | 1968-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-05 | 1971-11-04 | 1972-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-05 | 1975-11-04 | 1976-05-05 | $7700.00 | Window Closed / Lapsed |