Disc brake with automatic adjustment

Details Disc brake with automatic adjustment Disc brake with automatic adjustment

1986-03-26

1987-09-08

Reger, Duane A.

Brakes

Wheel

Axially movable brake element or housing therefor

188196D, F16D 6556

Patent

active

046918094

ABSTRACT:
The invention relates to a disc brake with automatic adjustment, of the type incorporating a calliper (10), a brake actuator (12) which is adapted to act directly upon a first friction component (14) and, by reaction through the calliper (10) upon a second friction component (16). The brake actuator (12) incorporates a mechanical control (32) acting upon a hydraulic control piston (20) through an automatic adjustment device, the latter being formed by a screw and nut device (46, 60) with reversible pitch which is actuatable by the hydraulic piston (20) beyond a predetermined travel of the latter which is defined by a clearance between an annular component (82) and a thrust bearing (92) which is adapted to act upon the screw and nut device (46, 60), the clearance being capable of varying as a function of the pressure applied to the control piston (20). According to the invention, the annular component (82) is movable axially relative to the control piston (20) by means of a monitoring piston (64) when a predetermined control pressure is reached.

REFERENCES:
patent: 3952845 (1976-04-01), Asquith
patent: 4246985 (1981-01-01), Shimizu et al.

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