US3152644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for pressuring an automatically venting chamber
Assignee: Halliburton Co
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Filing: 1961-09-15
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Granted: 1964-10-13
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Expires: 1981-09-15
Abstract
No abstract record available.
Inventors
- 👤 Lee E Perkins
- 👤 David L Farley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:24
CPC Classifications
E; E21; E21B; E21B49/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
IN AN OIL WELL TESTING TOOL ADAPTED TO BE SUPPORTED ON A CONDUIT STRING AND HAVING A FLUID SAMPLE RECEIVING CHAMBER INCLUDING AN AUTOMATIC VENTING VALVE FOR RELIEVING INTERNAL CHAMBER PRESSURE, THE IMPROVEMENT COMPRISING: CONDUIT MEANS ADAPTED TO CONVEY FLUID FOR PRESSURIZING SAID CHAMBER FROM A WELL HEAD SOURCE OF PRESSURIZED FLUID; AND MEANS INCLUDING A PORTION EXPOSED TO SAID PRESSURIZED FLUID AND FURTHER INCLUDING VENTING VALVE HOLDING MEANS,
Claim 2
Dependent Claim
69 words
IN AN OIL WELL TESTING TOOL ADAPTED TO BE SUPPORTED ON A CONDUIT STRING AND HAVING A FLUID SAMPLE RECEIVING CHAMBER INCLUDING AN AUTOMATIC VENTING VALVE FOR RELIEVING INTERNAL CHAMBER PRESSURE, THE IMPROVEMENT COMPRISING: CONDUIT MEANS ADAPTED TO CONVEY FLUID FOR PRESSURIZING SAID CHAMBER FROM A WELL HEAD SOURCE OF PRESSURIZED FLUID; AND MEANS INCLUDING A PORTION EXPOSED TO SAID PRESSURIZED FLUID AND FURTHER INCLUDING VENTING VALVE HOLDING 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) | 1967-10-13 | 1968-04-13 | 1968-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-13 | 1972-04-13 | 1972-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-13 | 1976-04-13 | 1976-10-13 | $7700.00 | Window Closed / Lapsed |