Braking correction device

Details Braking correction device Braking correction device

1977-08-12

1978-10-03

Reger, Duane A.

Fluid-pressure and analogous brake systems

Multiple fluid-receiving devices

Multiple motors

303 22R, B60T 818

Patent

active

041180771

ABSTRACT:
A braking correction device of the type having a housing in which is defined a bore with a stepped piston slidably mounted therein so as to divide the bore into an inlet and an outlet chambers respectively communicating with the master cylinder and the brake actuators. The stepped piston has a head with a peripheral groove in which an annular ring is mounted with axial and radial clearance. The ring cooperates with the bore surface to control communication between the inlet and outlet chambers as a function of the position of the stepped piston. The bore surface has a first part forming a fluid tight side wall and a second part forming a side wall of porous material. The second part is adjacent the outlet chamber. A radial clearance is provided between the piston head and the bore surface of porous material for by-passing the sleeve of porous material to ensure the unihibited hydraulic flow between the inlet and outlet chamber is obtained during the non proportioning phase.

REFERENCES:
patent: 3597009 (1971-08-01), Baldwin
patent: 4053185 (1977-10-01), Carre
patent: 4062597 (1977-12-01), Sawyer et al.

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