Hydraulic booster

Details Hydraulic booster Hydraulic booster

1975-03-17

1976-07-06

Maslousky, Paul E.

Motors: expansible chamber type

With alternative manual actuation of load

Alternate pedal positions

91422, 91460, 91433, F15B 1310, F15B 1108, F15B 13042

Patent

active

039675386

ABSTRACT:
A hydraulic booster is disclosed which includes a control valve comprising a sleeve-shaped spool and a control piston slidably mounted at one end of said spool. The control piston projects into a control chamber filled with hydraulic fluid and in which are movable an operator-operated input member and an output member connected to a boost piston slidably mounted in a working chamber. The pressure generated in the control chamber shifts the control piston and the spool to a position admitting fluid pressure from a pump into the working chamber. The ratio of the effective areas of the control valve respectively submitted to the control pressure and to the pressure prevailing in the working chamber is about two.

REFERENCES:
patent: 3831491 (1974-08-01), Thomas
patent: 3838629 (1974-10-01), Meyers

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