| 摘要 |
An auto-adjuster mechanism for an internal shoe drum brake of the type having an adjustable length strut through which handbrake actuating forces are transmitted from a handbrake mechanism to the shoes is characterized by a pawl and ratchet adjuster of which the pawl is pivotally mounted and is subjected to the action of a coil spring stressed both in torsion (to urge the pawl in a direction to effect adjustment) and in compression (to urge the pawl yieldingly into engagement with the ratchet) and only operates to effect adjustment of the strut during operation of the service brake means. |
