Patent ID: 6131710
Filing Date: 2000-10-17
Classification: F16D

Abstract:
An improved brake assembly for a wheel having a brake spider with a central opening through which the spider is mounted on an axle, a cam shaft with a cam at an end thereof, the end rotatably extending through an aperture in the spider, a pair of brake shoes each having a pair of axially spaced apart webs, such that a first end of the pair of webs straddle the spider at a pair of anchor pin apertures, the first end of each pair of webs having a mounting aperture therethrough, alignable with one of the anchor pin apertures, a second end of the pair of webs having a cam follower mounted therein, a first and a second biaser under tension to connect the pair of brake shoes to each other in a manner forcing the cam followers against the cam, wherein the improvement comprises:a pair of anchor pins extending through the anchor pin apertures of the spider for anchoring the brake shoes through the aperture of each web at the first end of the brake shoes, the pair of anchor pins each having a first and a second trunnion at the respective ends thereof with an intermediate portion therebetween, the first and second trunnions being received in the mounting apertures and the intermediate portion being received in the corresponding anchor pin aperture in the brake spider,wherein each said anchor pin is axially compressible such that a stepped diameter shoulder at the base of each of the trunnions will be compressively urged against a periphery of the mounting apertures and the trunnions can be restorably compressed towards each other sufficiently to be disengaged from the mounting apertures.