US3239009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulically set well tools
Assignee: Baker Hughes Oilfield Operations LLC
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Filing: 1962-11-05
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Granted: 1966-03-08
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Expires: 1982-11-05
Abstract
No abstract record available.
Inventors
- 👤 Leutwyler Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:49
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/122
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
106 words
IN APPARATUS TO BE SET IN A WELL BORE: BODY MEANS; NORMALLY RETRACTED MEANS ON SAID BODY MEANS ADAPTED TO BE EXPANDED OUTWARDLY INTO ENGAGEMENT WITH THE WALL OF THE WELL BORE AND TO BE RETRACTED THEREFROM; A CYLINDER ON SAID BODY MEANS; PISTON MEANS IN SAID CYLINDER; MEANS OPERATIVELY CONNECTING SAID PISTON MEANS WITH SAID NORMALLY RETRACTED MEANS; FIRST PASSAGE MEANS FOR CONDUCTING FLUID UNDER PRESSURE TO SAID CYLINDER ABOVE SAID PISTON MEANS TO SHIFT SAID PISTON MEANS DOWNWARDLY IN SAID CYLINDER AND EXPAND SAID NORMALLY RETRACTED MEANS OUTWARDLY; SECOND PASSAGE MEANS FOR CONDUCTING FLUID UNDER PRESSURE TO SAID CYLINDER BELOW SAID PISTON MEANS TO
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) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |