US3298437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Actuator device for well tool
Assignee: Individual
•
Filing: 1964-08-19
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Granted: 1967-01-17
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Expires: 1984-08-19
Abstract
No abstract record available.
Inventors
- 👤 Martin B Conrad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:47
CPC Classifications
E; E21; E21B; E21B23/00; E21B23/06; E21B23/065; E21B33/00; E21B33/10; E21B33/12; E21B33/129; E21B33/1293
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
AN ACTUATOR DEVICE FOR WELL TOOL, COMPRISING IN COMBINATION: A CYLINDER MEMBER HAVING A BORE AND HAVING UPPER AND LOWER END WALLS DEFINING A CHAMBER WITHIN SAID BORE, EACH END WALL HAVING AN AXIAL OPENING, A PISTON SLIDABLY MOUNTED WITHIN SAID BORE, A PISTON ROD FIXED TO THE PISTON AND PROJECTING SLIDABLY THROUGH THE OPENING IN THE LOWER END WALL, A POST FIXED TO THE PISTON AND PROJECTING SLIDABLY THROUGH THE OPENING IN THE UPPER END WALL, AN AXIAL SLEEVE FIXED TO THE UPPER END WALL FORMING A CLOSED CAVITY WITHIN THE CYLINDER MEMBER, PORTS IN THE END WALL CONNECTING SAID CAVITY TO SAID CHAMBER, THE SLEEVE HAVING INTERIOR SPACE INTO WHICH SAID POST MAY PROJECT, PORT MEANS VENTING SAID INTERIOR SPACE TO THE
Claim 2
Dependent Claim
124 words
AN ACTUATOR DEVICE FOR WELL TOOL, COMPRISING IN COMBINATION: A CYLINDER MEMBER HAVING A BORE AND HAVING UPPER AND LOWER END WALLS DEFINING A CHAMBER WITHIN SAID BORE, EACH END WALL HAVING AN AXIAL OPENING, A PISTON SLIDABLY MOUNTED WITHIN SAID BORE, A PISTON ROD FIXED TO THE PISTON AND PROJECTING SLIDABLY THROUGH THE OPENING IN THE LOWER END WALL, A POST FIXED TO THE PISTON AND PROJECTING SLIDABLY THROUGH THE OPENING IN THE UPPER END WALL, AN AXIAL SLEEVE FIXED TO THE UPPER END WALL FORMING A CLOSED CAVITY WITHIN THE CYLINDER MEMBER, PORTS IN THE END WALL CONNECTING SAID CAVITY TO SAID CHAMBER, THE SLEEVE HAVING INTERIOR SPACE INTO WHICH SAID POST MAY PROJECT, PORT MEANS VENTING SAID INTERIOR SPACE TO THE
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) | 1970-01-16 | 1970-07-18 | 1971-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-16 | 1974-07-18 | 1975-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-16 | 1978-07-18 | 1979-01-17 | $7700.00 | Window Closed / Lapsed |