Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1985-08-09
1986-10-21
Reger, Duane A.
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
303119, B60T 808
Patent
active
046181890
ABSTRACT:
A hydraulic braking system having a master cylinder, a brake cylinder, a primary passage connecting the master and brake cylinder, a solenoid valve for selective communication of the brake cylinder with the master cylinder or with a reservoir, a pump for returning a brake fluid to the master cylinder, a shut-off valve disposed in the primary passage to prevent a flow of the fluid from the pump toward the master cylinder when the pump side pressure is higher than the master cylinder side pressure, an accumulator having a piston movable to define a variable volume chamber for storing the fluid under pressure, the braking system comprising a check valve in the primary passage between the master cylinder and the shut-off valve to inhibit a fluid flow therethrough in one direction from the master cylinder toward the shut-off valve, and further comprising a mechanism disposed between the accumulator and the check valve to hold a valve member of the check valve away from its seat to allow the fluid flow in the above-identified one direction while the accumulator piston is in its advanced position in which the volume of the accumulator chamber is minimum, the mechanism permitting the check valve member to be seated on the seat after the accumulator piston has been moved away from the advanced position.
REFERENCES:
patent: 4395073 (1983-07-01), Arikawa et al.
Nakanishi Nobuyasu
Nomura Yoshihisa
Reger Duane A.
Toyota Jidosha & Kabushiki Kaisha
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