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US3118348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pressure actuator apparatus
Assignee: —
•
Filing: —
•
Granted: 1964-01-21
•
Expires: 1981-01-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:53
CPC Classifications
F; F01; F01B; F01B17/00; F01B17/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
AN ACTUATOR COMPRISING MEANS DEFINING A WALL, A PISTON HAVING A THRUST PORTION AND ADAPTED FOR COOPERATION WITH THE WALL TO PROVIDE A PRESSURE SEAL THEREBETWEEN ABOUT A SURFACE PORTION OF THE WALL, MEANS FOR APPLYING A SET FORCE URGING THE PISTON TOWARD THE WALL TO ESTABLISH SAID PRESSURE SEAL, MEANS FOR APPLYING AN ACTUATING PRESSURE ON SAID PISTON TO OVERBALANCE SAID SET FORCE TO ELIMINATE THE PRESSURE SEAL AND EXPOSE AN INCREASED PISTON SURFACE AREA TO THE ACTUATING PRESSURE TO MOVE THE PISTON FROM THE WALL TO DEVELOP THRUST IN THE PISTON THRUST PORTION, SAID PISTON HAVING A CAVITY, SAID WALL HAVING AN OPENING THERETHROUGH TO ATMOSPHERE, A TUBE HAVING ONE END POSITIONED IN THE OPENING AND THE OTHER END EXTENDING INTO SAID CAVITY, AND MEANS FOR RELEASING A PORTION OF THE ACTUATING PRESSURE THROUGH THE
Claim 2
Dependent Claim
137 words
AN ACTUATOR COMPRISING MEANS DEFINING A WALL, A PISTON HAVING A THRUST PORTION AND ADAPTED FOR COOPERATION WITH THE WALL TO PROVIDE A PRESSURE SEAL THEREBETWEEN ABOUT A SURFACE PORTION OF THE WALL, MEANS FOR APPLYING A SET FORCE URGING THE PISTON TOWARD THE WALL TO ESTABLISH SAID PRESSURE SEAL, MEANS FOR APPLYING AN ACTUATING PRESSURE ON SAID PISTON TO OVERBALANCE SAID SET FORCE TO ELIMINATE THE PRESSURE SEAL AND EXPOSE AN INCREASED PISTON SURFACE AREA TO THE ACTUATING PRESSURE TO MOVE THE PISTON FROM THE WALL TO DEVELOP THRUST IN THE PISTON THRUST PORTION, SAID PISTON HAVING A CAVITY, SAID WALL HAVING AN OPENING THERETHROUGH TO ATMOSPHERE, A TUBE HAVING ONE END POSITIONED IN THE OPENING AND THE OTHER END EXTENDING INTO SAID CAVITY, AND MEANS FOR RELEASING A PORTION OF THE ACTUATING PRESSURE THROUGH THE
References Cited (Backward Citations)
US3093117A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-01-20 | 1967-07-22 | 1968-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-20 | 1971-07-22 | 1972-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-20 | 1975-07-22 | 1976-01-21 | $7700.00 | Window Closed / Lapsed |