US3100537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Formation testing apparatus
Assignee: Baker Hughes Oilfield Operations LLC
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Filing: 1960-09-01
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Granted: 1963-08-13
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Expires: 1980-09-01
Abstract
No abstract record available.
Inventors
- 👤 Talmadge L Crowe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:25
CPC Classifications
E; E21; E21B; E21B34/00; E21B34/06; E21B34/14; E21B49/00; E21B49/08; E21B49/087
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
IN A TESTER VALVE ADAPTED TO BE DISPOSED IN A WELL BORE ON A TUBULAR SPRING: RELATIVELY ROTATABLE INNER AND OUTER TUBULAR MEMBERS HAVING A PASSAGE THERETHROUGH, ONE OF SAID MEMBERS BEING CONNECTIBLE TO THE TUBULAR STRING; BARRIER MEANS IN AT LEAST A FIRS TOF SAID MEMBERS CLOSING SAID PASSAGE AND PROPORTIONED TO BE MOVABLE OUT OF SAID FIRST MEMBER; RELEASABLE HOLDING MEANS RELEASABLY ENGAGEABLE WITH SAID BARRIER MEANS AND RETAINING SAID BARRIER MEANS IN SAID FIRST MEMBER; AND MEANS RESPONSIVE TO RELATIVE ROTATION BETWEEN SAID TUBULAR MEMBERS FOR RELEASING SAID HOLDING MEANS FORM SAID BARRIER MEANS, WHEREBY SAID BARRIER MEANS CAN MOVE UPWARDLY OUT OF SAID FIRST MEMBER AND UPWARDLY THROUGH THE TUBULAR STRING.
Claim 2
Dependent Claim
115 words
IN A TESTER VALVE ADAPTED TO BE DISPOSED IN A WELL BORE ON A TUBULAR SPRING: RELATIVELY ROTATABLE INNER AND OUTER TUBULAR MEMBERS HAVING A PASSAGE THERETHROUGH, ONE OF SAID MEMBERS BEING CONNECTIBLE TO THE TUBULAR STRING; BARRIER MEANS IN AT LEAST A FIRS TOF SAID MEMBERS CLOSING SAID PASSAGE AND PROPORTIONED TO BE MOVABLE OUT OF SAID FIRST MEMBER; RELEASABLE HOLDING MEANS RELEASABLY ENGAGEABLE WITH SAID BARRIER MEANS AND RETAINING SAID BARRIER MEANS IN SAID FIRST MEMBER; AND MEANS RESPONSIVE TO RELATIVE ROTATION BETWEEN SAID TUBULAR MEMBERS FOR RELEASING SAID HOLDING MEANS FORM SAID BARRIER MEANS, WHEREBY SAID BARRIER MEANS CAN MOVE UPWARDLY OUT OF SAID FIRST MEMBER AND UPWARDLY THROUGH THE TUBULAR STRING.
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Cited
US2955458A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-08-12 | 1967-02-11 | 1967-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-12 | 1971-02-11 | 1971-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-12 | 1975-02-11 | 1975-08-13 | $7700.00 | Window Closed / Lapsed |