Disc brake adjuster

Details Disc brake adjuster Disc brake adjuster

F - Mech Eng,Light,Heat,Weapons

16

D

188/139

F16D 55/22 (2006.01)

Patent

CA 1219817

ABSTRACT OF THE DISCLOSURE A caliper disc brake has a first caliper leg including a hydraulically activated piston slidably received within a cylinder, the piston being axially displaceable to activate the brake, and an adjustment screw coaxial with the piston and extending from a hydraulic chamber into the piston cylinder. The adjusting screw having a first cross-sectional area acted upon by fluid pressure within the chamber for applying a first force to the screw urging the screw towards the piston and a second cross- sectional area acted upon by fluid pressure within the cylinder for applying a second force to the screw and op- posing the first force. A nut coaxial on the screw ex- tends into the cylinder, and frictional engagement is pro- vided between the nut and piston, whereby a predetermined brake activating movement of the piston effects frictional disengagement between the nut and piston, causing axial advancement of the nut relative to the screw.

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