Abstract: A fluid cooled brake for a wheel mounted for rotation about a spindle at one end of an axle and including a plurality of annular friction discs mounted within a closed annular chamber between the wheel and the end of the axle. A pump is provided having a suction line to a sump of lubricating fluid within the axle. The pump draws lubricating fluid from the sump and delivers the fluid through a first fluid passage to the chamber to circulate around the friction discs and return through a second fluid passage to the sump.

Abstract: A vehicle drive axle including a differential carrier and a differential driven by an input shaft. A pump housing is mounted to the forward end of the carrier in circumferentially enclosing relation to a portion of the input shaft and includes rotary fluid displacement means driven internally by the input shaft.

Abstract: An improved rotary seal for a heavy wheel hub and axle assembly in which the radially inner end of an outer metal case is formed to pilot the wheel hub onto the axle during assembly and the diameter of the radially inner end of the case is intermediate the diameter of a resilient sealing element lip and the radially inner end of a flange of an inner member supporting the resilient sealing element.

Abstract: A coupling comprising first and second members adapted to be connected respectively to a rotary drive and a rotary driven means subject to displacement from its normal axis of rotation. An elongate member is located intermediate the first and second members and drivingly connected to each member by a plurality of links and connecting pins. Each link includes a pair of connecting pins extending in the same axial direction away from the link. One pin of each link is secured to a flange at one end of the intermediate member, the other pin being secured to a flange of the first or second member at that end of the intermediate member. The links are provided adjacent the side of the flanges opposite one of the first or second rotary members to reduce the angular displacement required of the connecting link pins to accommodate axial displacement of a given distance and to provide a structure in which the elements may be readily assembled and disassembled.