Patent US3411588A successfully refreshed from Google Patents.
US3411588A
Expired / Lapsed
US
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Hanger apparatus for well pipe
Assignee: Ventura Tool Co
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Filing: 1966-12-28
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Granted: 1968-11-19
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Expires: 1986-12-28
Abstract
No abstract record available.
Inventors
- 👤 James W E Hanes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:38
CPC Classifications
E; E21; E21B; E21B41/00; E21B41/0078; E21B33/00; E21B33/02; E21B33/03; E21B33/04; E21B33/043; E21B37/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
IN APPARATUS FOR SUSPENDING PIPE IN A WELL BORE: A HEAD HAVING A CIRCUMFERENTIAL RECESS THEREIN; AN INHERENTLY EXPANDABLE HANGER SEAT ADAPTED TO EXPAND INTO SAID RECESS TO PROVIDE A SEAT FOR SUPPORTING A STRING OF PIPE IN THE WELL BORE; A RUNNING TOOL CONNECTIBLE TO A TUBULAR RUNNING-IN STRING FOR LOWERING TOWARD SAID HEAD; MEANS RELEASABLY CONNECTING SAID HANGER SEAT IN RETRACTED CONDITION TO SAID RUNNING TOOL; AND MEANS FOR RELEASING SAID HANGER SEAT FROM SAID RUNNING TOOL TO ENABLE SAID HANGER SEAT TO EXPAND INHERENTLY INTO SAID RECESS UPON BEING LOWERED INTO TRANSVERSE ALIGNMENT THEREWITH.
Claim 2
Dependent Claim
97 words
IN APPARATUS FOR SUSPENDING PIPE IN A WELL BORE: A HEAD HAVING A CIRCUMFERENTIAL RECESS THEREIN; AN INHERENTLY EXPANDABLE HANGER SEAT ADAPTED TO EXPAND INTO SAID RECESS TO PROVIDE A SEAT FOR SUPPORTING A STRING OF PIPE IN THE WELL BORE; A RUNNING TOOL CONNECTIBLE TO A TUBULAR RUNNING-IN STRING FOR LOWERING TOWARD SAID HEAD; MEANS RELEASABLY CONNECTING SAID HANGER SEAT IN RETRACTED CONDITION TO SAID RUNNING TOOL; AND MEANS FOR RELEASING SAID HANGER SEAT FROM SAID RUNNING TOOL TO ENABLE SAID HANGER SEAT TO EXPAND INHERENTLY INTO SAID RECESS UPON BEING LOWERED INTO TRANSVERSE ALIGNMENT THEREWITH.
References Cited (Backward Citations)
US2016454A
Cited
US2157496A
Cited
US2178549A
Cited
US2159401A
Cited
US3297344A
Cited
US3330341A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-19 | 1972-05-20 | 1972-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-19 | 1976-05-20 | 1976-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-19 | 1980-05-20 | 1980-11-19 | $7700.00 | Window Closed / Lapsed |