Hydraulic amplifier

Details Hydraulic amplifier Hydraulic amplifier

1977-01-07

1978-10-24

Maslousky, Paul E.

Motors: expansible chamber type

With alternative manual actuation of load

Alternate pedal positions

91457, F15B 1310

Patent

active

041215001

ABSTRACT:
A hydraulic amplifier comprising a housing wherein is defined a pressure chamber. A servo piston is slidable in a bore opening onto the pressure chamber. The amplifier also comprises a set of control valve connectible to a high pressure fluid source and a low pressure reservoir. An operator operated control rod has one end projecting into the chamber. In the pressure chamber is mounted a lever mechanism comprising a lever having one end pivoted on a pin associated with the housing, and the other end is moved by the control rod. The lever mechanism also comprises a rocker member which is pivoted on the lever and whose respective ends can bear on the servo piston and are adapted to move at least one valve in the control valve set. The pin is slidable relative to the housing and is urged by resilient means into an idle position. The control valve set comprises an exhaust valve operated by a rocker member, and a high pressure valve operated in response to the movement of the pin from its idle position.

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