Hydraulic booster

Details Hydraulic booster Hydraulic booster

1976-10-15

1978-10-03

Maslousky, Paul E.

Motors: expansible chamber type

With motive fluid valve

Relatively movable inlet and exhaust valves for single...

91391R, F15B 1108, F15B 1304, F15B 1310

Patent

active

041177665

ABSTRACT:
The invention relates to a hydraulic booster of the closed-center type and comprising a housing containing a working chamber, an actuating piston slidable in the working chamber, a set of a high-pressure valve and an exhaust valve of the ball valve type controlling fluid connections between an accumulator, the working chamber and an exhaust orifice. The high-pressure valve is controlled by a tappet including a sleeve having a central passage therein communicating with the working chamber and the exhaust orifice. The exhaust valve controls the fluid flow through the central passage. Both valves are actuated by movement of a sliding block adapted to engage the exhaust valve member.

REFERENCES:
patent: 2976849 (1961-03-01), Stelzer
patent: 3633363 (1972-01-01), Larsen
patent: 3639008 (1972-02-01), MacDuff
patent: 3834277 (1974-09-01), Yabuta et al.
patent: 3926093 (1975-12-01), Nakagawa

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