US3266576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well packer apparatus
Assignee: Baker Hughes Oilfield Operations LLC
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Filing: 1963-07-23
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Granted: 1966-08-16
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Expires: 1983-07-23
Abstract
No abstract record available.
Inventors
- 👤 David V Chenoweth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:09
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/126; E21B33/1265
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
IN A WELL TOOL: A BODY ADAPTED TO BE MOVED LONGITUDINALLY IN A WELL CONDUIT AND HAVING A PASSAGE FOR FLUID; NORMALLY RETRACTED SLIP MEANS ON SAID BODY; EXPANDER MEANS ON SAID BODY RELATIVELY MOVABLE INTO ENGAGEMENT WITH SAID SLIP MEANS TO EXPAND SAID SLIP MEANS AGAINST THE WELL CONDUIT; A HOLDING DEVICE WITHIN AND MOVABLE LONGITUDINALLY OF SAID BODY AND ENGAGEABLE WITH ONE OF SAID MEANS TO PREVENT SAID EXPANDER MEANS FROM EXPANDING SAID SLIP MEANS AGAINST THE CONDUIT WHEN SAID DEVICE IS IN UPPER AND LOWER POSITIONS WITHIN SAID BODY, BUT
Claim 2
Dependent Claim
93 words
IN A WELL TOOL: A BODY ADAPTED TO BE MOVED LONGITUDINALLY IN A WELL CONDUIT AND HAVING A PASSAGE FOR FLUID; NORMALLY RETRACTED SLIP MEANS ON SAID BODY; EXPANDER MEANS ON SAID BODY RELATIVELY MOVABLE INTO ENGAGEMENT WITH SAID SLIP MEANS TO EXPAND SAID SLIP MEANS AGAINST THE WELL CONDUIT; A HOLDING DEVICE WITHIN AND MOVABLE LONGITUDINALLY OF SAID BODY AND ENGAGEABLE WITH ONE OF SAID MEANS TO PREVENT SAID EXPANDER MEANS FROM EXPANDING SAID SLIP MEANS AGAINST THE CONDUIT WHEN SAID DEVICE IS IN UPPER AND LOWER POSITIONS WITHIN SAID BODY, BUT
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) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |