Patent US2760583A successfully refreshed from Google Patents.
US2760583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well packer and tubing string coupling therefor
Assignee: Baker Hughes Oilfield Operations LLC
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Filing: 1953-08-24
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Granted: 1956-08-28
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Expires: 1973-08-24
Abstract
No abstract record available.
Inventors
- 👤 Albert K Kline
- 👤 Martin B Conrad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:46
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
IN A WELL PACKER: A BODY; A PACKING STRUCTURE INCLUDING A PLURALITY OF ELASTIC SLEEVES ON SAID BODY; A STOP MEMBER WITHIN SAID SLEEVED SLIDABLE ON SAID BODY; A SPACER MEMBER ON SAID STOP MEMBER AND ENGAGING THE ADJACENT ENDS OF SAID SLEEVES; UPPER AND LOWER ABUTMENTS ON SAID BODY ENGAGING THE UPPER AND LOWER ENDS OF SAID PACKING STRUCTURE; AND MEANS FOR EXERTING AN UPWARD PULL ON SAID BODY AND A DOWNWARD PUSH ON SAID UPPER ABUT-
Claim 2
Dependent Claim
78 words
IN A WELL PACKER: A BODY; A PACKING STRUCTURE INCLUDING A PLURALITY OF ELASTIC SLEEVES ON SAID BODY; A STOP MEMBER WITHIN SAID SLEEVED SLIDABLE ON SAID BODY; A SPACER MEMBER ON SAID STOP MEMBER AND ENGAGING THE ADJACENT ENDS OF SAID SLEEVES; UPPER AND LOWER ABUTMENTS ON SAID BODY ENGAGING THE UPPER AND LOWER ENDS OF SAID PACKING STRUCTURE; AND MEANS FOR EXERTING AN UPWARD PULL ON SAID BODY AND A DOWNWARD PUSH ON SAID UPPER ABUT-
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) | 1959-08-28 | 1960-02-27 | 1960-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-28 | 1964-02-27 | 1964-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-28 | 1968-02-27 | 1968-08-28 | $7700.00 | Window Closed / Lapsed |