US3100452A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well tools
Assignee: Otis Engineering Corp
•
Filing: 1958-06-23
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Granted: 1963-08-13
•
Expires: 1978-06-23
Abstract
No abstract record available.
Inventors
- 👤 George G Grimmer
- 👤 Schramm Josephine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:05
CPC Classifications
E; E21; E21B; E21B23/00; E21B23/03; E21B43/00; E21B43/12; E21B43/121; E21B43/122; E21B43/123; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/2934
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
163 words
A WELL TOOL INCLUDING: A LANDING NIPPLE PROVIDED WITH A LATERAL PORT; A GAS LIFT VALVE REMOVABLY INSTALLED IN SAID NIPPLE, SAID GAS LIFT VALVE HAVING A FLOW PASSAGE THERETHROUGH WITH A LATERAL OPENING INTERMEDIATE THE ENDS OF SAID VALVE, AND EXTERNAL SEAL MEANS THEREON SPACED LONGITUDINALLY ON OPPOSITE SIDES OF SAID LATERAL OPENING, SAID SEAL MEANS BEING DISPOSED TO ENGAGE SAID LANDING NIPPLE; AND MEANS ON SAID HOUSING AND SAID GAS LIFT VALVE CO-ENGAGEABLE TO POSITION SAID GAS LIFT VALVE IN SAID NIPPLE AT A FIRST POSITION IN WHICH SAID SEAL MEANS ON SAID GAS LIFT VALVE ARE POSITIONED ON OPPOSITE SIDES OF SAID PORT IN SAID NIPPLE FOR DIRECTING FLOW FROM SAID PORT INTO SAID NIPPLE THROUGH SAID VALVE, AND A SECOND POSITION IN WHICH SAID SEAL MEANS ARE DISPOSED ON THE SAME SIDE OF SAID PORT IN SAID NIPPLE OPENING SAID PORT TO PERMIT FLOW OF FLUIDS DIRECTLY INTO SAID NIPPLE WITHOUT PASSING THROUGH SAID FLOW PASSAGE OF SAID VALVE.
Claim 2
Dependent Claim
163 words
A WELL TOOL INCLUDING: A LANDING NIPPLE PROVIDED WITH A LATERAL PORT; A GAS LIFT VALVE REMOVABLY INSTALLED IN SAID NIPPLE, SAID GAS LIFT VALVE HAVING A FLOW PASSAGE THERETHROUGH WITH A LATERAL OPENING INTERMEDIATE THE ENDS OF SAID VALVE, AND EXTERNAL SEAL MEANS THEREON SPACED LONGITUDINALLY ON OPPOSITE SIDES OF SAID LATERAL OPENING, SAID SEAL MEANS BEING DISPOSED TO ENGAGE SAID LANDING NIPPLE; AND MEANS ON SAID HOUSING AND SAID GAS LIFT VALVE CO-ENGAGEABLE TO POSITION SAID GAS LIFT VALVE IN SAID NIPPLE AT A FIRST POSITION IN WHICH SAID SEAL MEANS ON SAID GAS LIFT VALVE ARE POSITIONED ON OPPOSITE SIDES OF SAID PORT IN SAID NIPPLE FOR DIRECTING FLOW FROM SAID PORT INTO SAID NIPPLE THROUGH SAID VALVE, AND A SECOND POSITION IN WHICH SAID SEAL MEANS ARE DISPOSED ON THE SAME SIDE OF SAID PORT IN SAID NIPPLE OPENING SAID PORT TO PERMIT FLOW OF FLUIDS DIRECTLY INTO SAID NIPPLE WITHOUT PASSING THROUGH SAID FLOW PASSAGE OF SAID VALVE.
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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 |