Patent ID: 8302742

Claim:
An automatic slack adjuster, comprising: a housing having an aperture for receiving a brake cam shaft and a brake actuator arm arranged to receive a brake application force; a worm wheel co-axially located within the housing aperture and configured to co-axially engage the brake cam shaft in a manner which precludes rotation of the worm wheel relative to the brake cam shaft; an adjuster drive arranged to rotate the worm wheel relative to the housing; and a one-way clutch assembly with a one-way clutch assembly drive, the one-way clutch assembly being arranged to rotate the adjuster drive to drive rotation of the housing relative to the worm wheel, and having a control gear which drives the one-way clutch assembly, wherein the application of brake application force in a brake application direction to the brake actuator arm causes the housing to rotate about a rotation axis of the worm wheel, and the control gear is located in a region of the housing which is rearward relative to the brake application direction from of the location in the housing of the intersection of the worm shaft and the worm gear.