摘要 |
<p>An automatic slack adjuster for vehicle brakes includes an annular housing, a splined bushing within the housing, and unidirectional clutch between housing and bushing, the bushing having an annular surface frictionally engaged by the surface of a ring having limited rotation. Brake pressure is applied to a rotatable brake actuating mechanism on the forward (i.e., power application) stroke by an amount equal to brake-application and slack. On the return (i.e., nonpowered) stroke, slack adjustment is provided by limited rotation of the ring, while the housing continues freely to automatically reset the device to its null position.</p> |