US3361207A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retrievable subsurface well tools
Assignee: Baker Hughes Oilfield Operations LLC
•
Filing: 1964-09-04
•
Granted: 1968-01-02
•
Expires: 1984-09-04
Abstract
No abstract record available.
Inventors
- 👤 David V Chenoweth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:06
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/129; E21B33/1295; E21B33/12955
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
IN A WELL TOOL ADAPTE TO BE SET IN A WELL BORE: A BODY STRUCTURE; NORMALLY RETRACTED MEANS IN SAID BODY STRUCTURE; MEANS RESPONSIVE TO MOVEMENT OF SAID BODY STRUCTURE IN ONE DIRECTION RELATIVE TO SAID NORMALLY RETRACTED MEANS FOR EXPANDING SAID NORMALLY RETRACTED MEANS OUTWARDLY, SAID EXPANDING MEANS INCLUDING CHAMBER MEANS CONTAINING A GAS UNDER PRESSURE EXERTING A CONSTANT FORCE EXTENDING TO RETAIN AND NORMALLY RETRACTED MEANS IN EXPANDED CONDITION; FIRST RELEASABLE CLUTCH MEANS ACTING BETWEEN SAID BODY STRUCTURE AND NORMALLY RETRACTED MEANS FOR PREVENTING SUCH MOVEMENT OF SAID BODY STRUCTURE RELATIVE TO SAID NORMALLY RETRACTED MEANS; AND SECOND RELEASABLE CLUTCH MEANS ACTING BETWEEN SAID BODY STRUCTURE AND NORMALLY RETRACTED MEANS FOR PREVENTING MOVEMENT OF SAID BODY STRUCTURE RELATIVE TO SAID NORMALLY
Claim 2
Dependent Claim
123 words
IN A WELL TOOL ADAPTE TO BE SET IN A WELL BORE: A BODY STRUCTURE; NORMALLY RETRACTED MEANS IN SAID BODY STRUCTURE; MEANS RESPONSIVE TO MOVEMENT OF SAID BODY STRUCTURE IN ONE DIRECTION RELATIVE TO SAID NORMALLY RETRACTED MEANS FOR EXPANDING SAID NORMALLY RETRACTED MEANS OUTWARDLY, SAID EXPANDING MEANS INCLUDING CHAMBER MEANS CONTAINING A GAS UNDER PRESSURE EXERTING A CONSTANT FORCE EXTENDING TO RETAIN AND NORMALLY RETRACTED MEANS IN EXPANDED CONDITION; FIRST RELEASABLE CLUTCH MEANS ACTING BETWEEN SAID BODY STRUCTURE AND NORMALLY RETRACTED MEANS FOR PREVENTING SUCH MOVEMENT OF SAID BODY STRUCTURE RELATIVE TO SAID NORMALLY RETRACTED MEANS; AND SECOND RELEASABLE CLUTCH MEANS ACTING BETWEEN SAID BODY STRUCTURE AND NORMALLY RETRACTED MEANS FOR PREVENTING MOVEMENT OF SAID BODY STRUCTURE RELATIVE TO SAID NORMALLY
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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) | 1971-01-01 | 1971-07-03 | 1972-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-01 | 1975-07-03 | 1976-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-01 | 1979-07-03 | 1980-01-02 | $7700.00 | Window Closed / Lapsed |