Patent US2665292A successfully refreshed from Google Patents.
Patent US3143128A successfully refreshed from Google Patents.
US3143128A
Expired / Lapsed
US
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Gas lift valve
Assignee: Merla Tool Corp
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Filing: 1961-07-28
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Granted: 1964-08-04
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Expires: 1981-07-28
Abstract
No abstract record available.
Inventors
- 👤 Jr Lewis J Bicking
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:23
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/12; E21B43/121; E21B43/122; E21B43/123; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/2934; Y10T137/7722; Y10T137/7758; Y10T137/7762; Y10T137/7764
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A GAS LIFT VALVE COMPRISING, A TUBULAR HOUSING, SPACED SEAL MEANS ON THE EXTERIOR OF THE HOUSING DEFINING THEREBETWEEN AN INTERMEDIATE SECTION OF THE HOUSING, A MAIN GAS PASSAGEWAY THROUGH THE HOUSING HAVING AN INLET IN SAID INTERMEDIATE SECTION AND AN OUTLET OUTSIDE OF AND ON ONE SIDE OF SAID INTERMEDIATE SECTION, A VALVE SEAT ACROSS SAID MAIN GAS PASSAGEWAY, A MAIN VALVE MEMBER COOPERABLE WITH THE VALVE SEAT TO CONTROL FLOW THROUGH THE PASSAGEWAY, A PRESSURE RESPONSIVE MEMBER MOUNTED IN THE HOUSING, MEANS CONNECTING SAID MAIN VALVE MEMBER AND PRESSURE RESPONSIVE MEMBER TOGETHER, MEANS EXPOSING ONE SIDE OF SAID PRESSURE RESPONSIVE MEMBER TO SAID INTERMEDIATE SECTION OF THE HOUSING, A PILOT GAS PASSAGEWAY HAVING AN INLET IN SAID INTERMEDIATE SECTION AND AN OUTLET OUTSIDE AND ON THE OTHER SIDE OF SAID INTERMEDIATE SECTION, THE OTHER SIDE OF SAID PRESSURE RESPONSIVE
Claim 2
Dependent Claim
141 words
A GAS LIFT VALVE COMPRISING, A TUBULAR HOUSING, SPACED SEAL MEANS ON THE EXTERIOR OF THE HOUSING DEFINING THEREBETWEEN AN INTERMEDIATE SECTION OF THE HOUSING, A MAIN GAS PASSAGEWAY THROUGH THE HOUSING HAVING AN INLET IN SAID INTERMEDIATE SECTION AND AN OUTLET OUTSIDE OF AND ON ONE SIDE OF SAID INTERMEDIATE SECTION, A VALVE SEAT ACROSS SAID MAIN GAS PASSAGEWAY, A MAIN VALVE MEMBER COOPERABLE WITH THE VALVE SEAT TO CONTROL FLOW THROUGH THE PASSAGEWAY, A PRESSURE RESPONSIVE MEMBER MOUNTED IN THE HOUSING, MEANS CONNECTING SAID MAIN VALVE MEMBER AND PRESSURE RESPONSIVE MEMBER TOGETHER, MEANS EXPOSING ONE SIDE OF SAID PRESSURE RESPONSIVE MEMBER TO SAID INTERMEDIATE SECTION OF THE HOUSING, A PILOT GAS PASSAGEWAY HAVING AN INLET IN SAID INTERMEDIATE SECTION AND AN OUTLET OUTSIDE AND ON THE OTHER SIDE OF SAID INTERMEDIATE SECTION, THE OTHER SIDE OF SAID PRESSURE RESPONSIVE
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) | 1967-08-04 | 1968-02-03 | 1968-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-04 | 1972-02-03 | 1972-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-04 | 1976-02-03 | 1976-08-04 | $7700.00 | Window Closed / Lapsed |