Power plants – Pressure fluid source and motor – Pulsator
Patent
1982-06-07
1984-09-18
Hershkovitz, Abraham
Power plants
Pressure fluid source and motor
Pulsator
60585, 60591, 60593, B60T 1120
Patent
active
044716141
ABSTRACT:
A hydro-pneumatic actuator for providing a two-stage buildup of the hydraulic output pressure. A primary hydraulic piston, to which a pneumatic input piston actuator is connected, acts in a larger bore of a hydraulic cylinder to transfer fluid via a central passage in a spring-loaded, differential area, secondary hydraulic piston, that is coaxially disposed in the hydraulic cylinder in spaced-apart relationship with, and downstream of, the primary piston. A larger face of the secondary piston is in the larger bore and the smaller face is in a reduced diameter bore of the hydraulic cylinder, so that a pressure buildup in the hydraulic cylinder effects actuation of the secondary piston to close a check valve and thereby inter-fluid communication between the larger and smaller bores of the hydraulic cylinder via the central passage. The smaller face of the secondary piston is therefore effective to transmit the hydraulic force with a high gain multiplication factor following attainment of an initial predetermined force in low gain.
The arrangement includes a displacement cylinder to measure the pneumatic piston stroke and an expansion chamber into which fluid is drawn from the reservoir when piston stroke is excessive for subsequent transfer to the hydraulic cylinder.
REFERENCES:
patent: 2587023 (1952-02-01), Allyn
patent: 2941366 (1960-06-01), Porter
patent: 3406519 (1968-10-01), Hackett
patent: 3513656 (1970-05-01), Engle
patent: 3633365 (1972-01-01), Belkrap
patent: 3832851 (1974-09-01), Kiernan
patent: 4012080 (1977-03-01), Engle
American Standard Inc.
Falce Gary J.
Hershkovitz Abraham
LandOfFree
Hydro-pneumatic actuator with automatic slack adjuster does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hydro-pneumatic actuator with automatic slack adjuster, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydro-pneumatic actuator with automatic slack adjuster will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-787934