Abstract: A brake system for a vehicle in which a pair of brake discs are mounted on two opposed shafts in alignment with one another and pucks are disposed on opposite sides of each of said discs. The pucks between the discs are supported by relatively movable support members, and an adjustment device is disposed between the support members to vary the spacing between the pucks and discs to compensate for wear occurring in the pucks from braking operations. The brakes are operated by a hydraulic actuator which presses the pucks onto the respective discs and urges them toward an abutment, the abutment being either a fixed member or the head of a mechanical brake which can apply a braking force in the direction opposite to the hydraulic actuator, to apply the brakes.

Abstract: A single wheel drive mechanism wherein the drive motor is mounted on a vehicle support member and has its output shaft axially aligned with a driving shaft that is journaled in a gear box housing that is also attached to the support member, with a rotary gear case being rotatably mounted on a stationary spindle extending outwardly from the gear box housing, said gear case including an internal ring gear that is in mesh with gear means rotatably journaled in the gear box housing and which is also in mesh with a drive gear on the driving shaft. A friction brake means is interposed between the support member and the gear box housing, with a rotatable member thereof also serving as the coupling means between the drive shaft and the motor output shaft.