US3315747A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for use in a well bore
Assignee: Halliburton Co
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Filing: 1965-02-25
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Granted: 1967-04-25
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Expires: 1985-02-25
Abstract
No abstract record available.
Inventors
- 👤 David L Farley
- 👤 Burchus Q Barrington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:50
CPC Classifications
E; E21; E21B; E21B34/00; E21B34/06; E21B34/12
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
163 words
AN APPARATUS FOR USE IN A WELL BORE, SAID APPARATUS COMPRISING: FIRST CONDUIT MEANS; SECOND CONDUIT MEANS TELESCOPINGLY MOUNTED IN RELATION TO SAID FIRST CONDUIT MEANS; COUPLING MEANS ADAPTED TO INTERCONNECT SAID FIRST AND SECOND CONDUIT MEANS; SAID COUPLING MEANS COMPRISING ANNULAR CAVITY MEANS BETWEEN PORTIONS OF SAID FIRST AND SAID SECOND CONDUIT MEANS; SAID COUPLING MEANS INCLUDING FIRST SURFACE MEANS PROJECTING FROM SAID FIRST CONDUIT MEANS GENERALLY TOWARD SAID SECOND CONDUIT MEANS; SECOND SURFACE MEANS PROJECTING FROM SAID SECOND CONDUIT MEANS GENERALLY TOWARD SAID FIRST CONDUIT MEANS; SAID FIRST AND SECOND SURFACE MEANS BEING DISPOSED WITHIN SAID CAVITY MEANS AND BEING AXIALLY ENGAGEABLE, WITH SAID FIRST SURFACE MEANS BEING RADIALLY SPACED FROM ADJACENT WALL PORTIONS OF SAID SECOND CONDUIT MEANS, AND SAID SECOND SURFACE MEANS BEING RADIALLY SPACED FROM RADIALLY ADJACENT WALL PORTIONS OF SAID FIRST CONDUIT MEANS; AND PASSAGE MEANS EXTENDING THROUGH A PORTION OF ONE OF SAID CONDUIT MEANS AND ADAPTED TO TRANSMIT PRESSURIZED FLUID TO SAID ANNULAR CAVITY MEANS.
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) | 1970-04-24 | 1970-10-24 | 1971-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-24 | 1974-10-24 | 1975-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-24 | 1978-10-24 | 1979-04-25 | $7700.00 | Window Closed / Lapsed |