US3333459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Releasable coupler and tubular testing apparatus
Assignee: Baker Hughes Oilfield Operations LLC
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Filing: 1965-03-09
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Granted: 1967-08-01
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Expires: 1985-03-09
Abstract
No abstract record available.
Inventors
- 👤 Jackson R Claycomb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:29
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/124; E21B47/00; E21B47/10; E21B47/117
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
IN APPARATUS FOR TESTING PIPE AND CONNECTIBLE TO TUBING TO BE MOVED BY THE TUBING LONGITUDINALLY IN THE PIPE: BODY MEANS MOVABLE LONGITUDINALLY IN THE PIPE; LONGITUDINALLY SPACED PACKING STRUCTURES ON SAID BODY MEANS EXPANDIABLE LATERALLY OUTWARDLY INTO SEALING ENGAGEMENT WITH THE PIPE AND RETRACTABLE FROM THE PIPE; SAID BODY MEANS HAVING PASSAGE MEANS FOR RECEIVING FLUID FROM THE TUBING, SAID PASSAGE MEANS HAVING AN OUTLET FROM SAID BODY MEANS BETWEEN SAID PACKING STRUCTURES; SUPPORTING MEANS ON SAID BODY MEANS FOR GRIPPING THE PIPE TO SUPPORT THE APPARATUS THEREIN; MEANS FOR SHIFTING SAID SUPPORTING MEANS AGAINST THE PIPE; FLUID OPERATED MEANS RESPONSIVE TO FLUID PRESSURE IN SAID PASSAGE MEANS OF A FIRST VALUE FOR RETRACTING SAID SUPPORTING MEANS FROM THE PIPE; MEANS FOR SHIFTING SAID PACKING STRUCTURES BETWEEN EXPANDED AND RETRACTED CONDITIONS COMPRISING FLUID OPERATED MEANS RESPONSIVE TO FLUID PRESSURE IN SAID PASSAGE MEANS OF A SECOND VALUE HIGHER THAN SAID FIRST VALUE; AND VALVE MEANS NORMALLY CLOSING
Claim 2
Dependent Claim
158 words
IN APPARATUS FOR TESTING PIPE AND CONNECTIBLE TO TUBING TO BE MOVED BY THE TUBING LONGITUDINALLY IN THE PIPE: BODY MEANS MOVABLE LONGITUDINALLY IN THE PIPE; LONGITUDINALLY SPACED PACKING STRUCTURES ON SAID BODY MEANS EXPANDIABLE LATERALLY OUTWARDLY INTO SEALING ENGAGEMENT WITH THE PIPE AND RETRACTABLE FROM THE PIPE; SAID BODY MEANS HAVING PASSAGE MEANS FOR RECEIVING FLUID FROM THE TUBING, SAID PASSAGE MEANS HAVING AN OUTLET FROM SAID BODY MEANS BETWEEN SAID PACKING STRUCTURES; SUPPORTING MEANS ON SAID BODY MEANS FOR GRIPPING THE PIPE TO SUPPORT THE APPARATUS THEREIN; MEANS FOR SHIFTING SAID SUPPORTING MEANS AGAINST THE PIPE; FLUID OPERATED MEANS RESPONSIVE TO FLUID PRESSURE IN SAID PASSAGE MEANS OF A FIRST VALUE FOR RETRACTING SAID SUPPORTING MEANS FROM THE PIPE; MEANS FOR SHIFTING SAID PACKING STRUCTURES BETWEEN EXPANDED AND RETRACTED CONDITIONS COMPRISING FLUID OPERATED MEANS RESPONSIVE TO FLUID PRESSURE IN SAID PASSAGE MEANS OF A SECOND VALUE HIGHER THAN SAID FIRST VALUE; AND VALVE MEANS NORMALLY CLOSING
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) | 1970-07-31 | 1971-01-30 | 1971-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-31 | 1975-01-30 | 1975-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-31 | 1979-01-30 | 1979-08-01 | $7700.00 | Window Closed / Lapsed |