Control valve assemblies for two pedal-operated hydraulic brakin

Details Control valve assemblies for two pedal-operated hydraulic brakin Control valve assemblies for two pedal-operated hydraulic brakin

1982-05-20

1984-04-17

Stoner, Jr., Bruce H.

Power plants

Pressure fluid source and motor

Pulsator

60581, 303 9, 303 52, B60T 1300

Patent

active

044426712

ABSTRACT:
In dual control assemblies for hydraulic braking systems of vehicles, the valve assemblies comprise a pair of control valves clamped together in side-by-side relationship in each of which a back-up piston works in a greater diameter portion and a hollow spool works in a smaller diameter portion of a stepped bore, the piston and the spool being operated by a push- or pull-rod in turn operated by a pedal. The spool controls communication between pressure spaces of the valves and their respective recuperation, inlet and transfer ports. The recuperation ports are connected to a common reservoir for fluid, the inlet ports are connected to a common hydraulic power source and the transfer ports are interconnected. Each pressure space is connected to a brake via an outlet port.

REFERENCES:
patent: 3789611 (1974-02-01), Marquardt
patent: 4405181 (1983-09-01), Resch et al.

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