Improvements in self-energising disc brakes.

摘要

In a disc brakes of the spreading type the pressure plates (4, 5) are movable in opposite directions to increase their axial separation by means of a wedge member (11) of segmental outline of which the inwardly convergent end edges (12, 13) act to separate an adjuster pair of balls (7). The member (11) has an outer arcuate bearing face (14) lying on the arc of a circle which is concentric with a circle containing the arc of movement of the pressure plates, and the wedge member (11) is movable in a radially inwards direction by means of an adjuster member (15) or a brake applying member (21) which extends through the wall of the housing (3) and acts on the bearing face (14).