A brake system for a vehicle having an axle supporting a wheel hub including a disc on the axle adjacent the hub, a housing supported by the vehicle in proximity to the disc, the housing having an opening therein which is perpendicular the disc planar surfaces, a pad support slideably and non-rotatably...http://www.google.com/patents/US4553643?utm_source=gb-gplus-sharePatent US4553643 - Disc brake for trucks
