Patent US3194175A successfully refreshed from Google Patents.
US3194175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid-operated gas lift apparatus
Assignee: Macco Oil Tool Co Inc
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Filing: 1963-10-30
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Granted: 1965-07-13
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Expires: 1983-10-30
Abstract
No abstract record available.
Inventors
- 👤 Willis C Carlisle
- 👤 John H Mccarvell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:53
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/12; E21B43/121; E21B43/122; E21B43/123
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
A GAS LIFT APPARATUS MOUNTED IN A TUBING STRING PRIOR TO POSITIONING IN A WELL CASING, COMPRISING: (A) A TUBING STRING, (B) A TUBULAR MANDREL HAVING AN UPPER HEAD WITH AN ECCENTRICALLY POSITIONED LONGITUDINAL OPENING THERETHROUGH, (C) MEANS CONNECTING SAID UPPER HEAD TO SAID TUBING STRING, (D) SAID TUBULAR MANDREL ALSO HAVING A LOWER HEAD WITH AN ECCENTRICALLY POSITIONED LONGITUDINAL OPENING THERETHROUGH, (E) MEANS CONNECTING SAID LOWER HEAD TO SAID TUBING STRING, (F) SAID TUBULAR MANDREL INCLUDING AN INTERMEDIATE TUBULAR BODY HAVING A LONGITUDINAL BORE WHICH IS LARGER THAN SAID OPENINGS IN SAID UPPER AND LOWER HEADS, (G) SAID LONGITUDINAL OPENINGS IN SAID UPPER AND LOWER HEADS BEING OF SUBSTANTIALLY THE SAME SIZE AS THE BORE OF THE TUBING STRING AND IN LONGITUDINAL ALIGNMENT THEREWITH, (H) SAID LONGITUDINAL BORE OF SAID INTERMEDIATE TUBULAR
Claim 2
Dependent Claim
133 words
A GAS LIFT APPARATUS MOUNTED IN A TUBING STRING PRIOR TO POSITIONING IN A WELL CASING, COMPRISING: (A) A TUBING STRING, (B) A TUBULAR MANDREL HAVING AN UPPER HEAD WITH AN ECCENTRICALLY POSITIONED LONGITUDINAL OPENING THERETHROUGH, (C) MEANS CONNECTING SAID UPPER HEAD TO SAID TUBING STRING, (D) SAID TUBULAR MANDREL ALSO HAVING A LOWER HEAD WITH AN ECCENTRICALLY POSITIONED LONGITUDINAL OPENING THERETHROUGH, (E) MEANS CONNECTING SAID LOWER HEAD TO SAID TUBING STRING, (F) SAID TUBULAR MANDREL INCLUDING AN INTERMEDIATE TUBULAR BODY HAVING A LONGITUDINAL BORE WHICH IS LARGER THAN SAID OPENINGS IN SAID UPPER AND LOWER HEADS, (G) SAID LONGITUDINAL OPENINGS IN SAID UPPER AND LOWER HEADS BEING OF SUBSTANTIALLY THE SAME SIZE AS THE BORE OF THE TUBING STRING AND IN LONGITUDINAL ALIGNMENT THEREWITH, (H) SAID LONGITUDINAL BORE OF SAID INTERMEDIATE TUBULAR
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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) | 1968-07-12 | 1969-01-11 | 1969-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-12 | 1973-01-11 | 1973-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-12 | 1977-01-11 | 1977-07-13 | $7700.00 | Window Closed / Lapsed |