US3223109A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas lift valve
Assignee: Individual
•
Filing: 1962-05-16
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Granted: 1965-12-14
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Expires: 1982-05-16
Abstract
No abstract record available.
Inventors
- 👤 Leslie L Cummings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:55
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/12; E21B43/121; E21B43/122; E21B43/123; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/2934; Y10T137/8593; Y10T137/87917; Y10T137/88054
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
A VALVE INCLUDING: MEANS PROVIDING AN INTERNAL FLOW PASSAGE AND HAVING AN INTAKE PORT MEAND FOR PERMITTING FLOW OF FLUID INTO SAID PASSAGE FROM A FIRST REGION EXTERIORLY OF SAID VALVE AND A DISCHARGE PORT MEANS SPACED FROM SAID INTAKE PORT MEANS FOR PERMITTING FLOW OF FLUID FROM SAID PASSAGE TO A SECOND REGION SPACED FROM SAID FIRST REGION; MEANS FOR PREVENTING FLOW OF FLUID FROM SAID PASSAGE TO SAID FIRST REGION THROUGH SAID INTAKE PORT MEANS; FIRST VALVE MEANS IN SAID PASSAGE AND BIASED TOWARD CLOSED POSITION PREVENTING FLOW OF FLUIDS THROUGH SAID PASSAGE, SAID FIRST VALVE MEANS BEING REPONSIVE TO THE PRESSURE AT SAID FIRST REGION FOR OPENING AND CLOSING SAID INTAKE PORT MEANS; SECOND VALVE MEANS IN SAID PASSAGE DOWNSTREAM OF SAID FIRST VALVE MEANS AND SAID FLOW PREVENTING MEANS AND BIASED TOWARD OPEN POSITION; SAID SECOND VALVE MEANS IN-
Claim 2
Dependent Claim
143 words
A VALVE INCLUDING: MEANS PROVIDING AN INTERNAL FLOW PASSAGE AND HAVING AN INTAKE PORT MEAND FOR PERMITTING FLOW OF FLUID INTO SAID PASSAGE FROM A FIRST REGION EXTERIORLY OF SAID VALVE AND A DISCHARGE PORT MEANS SPACED FROM SAID INTAKE PORT MEANS FOR PERMITTING FLOW OF FLUID FROM SAID PASSAGE TO A SECOND REGION SPACED FROM SAID FIRST REGION; MEANS FOR PREVENTING FLOW OF FLUID FROM SAID PASSAGE TO SAID FIRST REGION THROUGH SAID INTAKE PORT MEANS; FIRST VALVE MEANS IN SAID PASSAGE AND BIASED TOWARD CLOSED POSITION PREVENTING FLOW OF FLUIDS THROUGH SAID PASSAGE, SAID FIRST VALVE MEANS BEING REPONSIVE TO THE PRESSURE AT SAID FIRST REGION FOR OPENING AND CLOSING SAID INTAKE PORT MEANS; SECOND VALVE MEANS IN SAID PASSAGE DOWNSTREAM OF SAID FIRST VALVE MEANS AND SAID FLOW PREVENTING MEANS AND BIASED TOWARD OPEN POSITION; SAID SECOND VALVE MEANS IN-
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) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |