Disc brake caliper with an integral proportioning valve

Details Disc brake caliper with an integral proportioning valve Disc brake caliper with an integral proportioning valve

1990-12-19

1992-09-29

Oberleitner, Robert J.

Brakes

Wheel

Axially movable brake element or housing therefor

188370, F16D 5518

Patent

active

051507722

ABSTRACT:
A disc braking (10) for a motor vehicle comprising a rotor (12); inner and outer brake pads (14,16) disposed on opposite sides of the rotor and movable into brake engagement therewith; a caliper (18) comprising a piston (26) for urging one of the brake pads against the rotor, a caliper housing (28) having a cylinder (32) positioned on one side of the rotor within which the piston is slidably movable under the action of fluid pressure in the cylinder, and a fluid line (34) in the caliper for supplying fluid to the cylinder for movement of the piston; and a proportioning valve (44) in the fluid line and integral with the caliper for preventing fluid pressure above a predetermined level acting on the piston. Reduces risk of wheel lock on braking. Provides a unitary caliper and proportioning valve prior to installation on a motor vehicle.

REFERENCES:
patent: 3384204 (1968-05-01), Swift
patent: 3651900 (1972-03-01), Feikema
patent: 4257496 (1987-03-01), Fujita et al.
patent: 4267903 (1981-05-01), Kita et al.
patent: 4435021 (1984-03-01), Hoenick
patent: 4535873 (1985-08-01), Airheart
patent: 4629039 (1986-12-01), Imoto et al.
patent: 5020864 (1991-06-01), Tanaka
patent: 5024298 (1991-06-01), Schenk et al.

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