Patent ID: 6412610
Filing Date: 2002-07-02
Classification: F16D

Abstract:
A brake caliper comprising:a caliper housing including a rotor channel adapted to receive a rotor therein, the rotor channel having a first axial surface adapted to seat a first brake pad thereon; and a piston assembly mounted to the housing on an axial side of the rotor channel, the piston assembly including, a piston nut, reciprocatable towards and away from the rotor channel opposite that of the first brake pad, the piston nut adapted to seat a second brake pad thereon, a cylindrical screw threaded into the piston nut, the screw including a coaxial, cylindrical bore extending therein, and a planetary gear train positioned within the cylindrical bore of the screw, the planetary gear train including a motor-driven, central sun gear, at least one coaxial tube ring gear and at least one planetary pinion operatively engaged between the sun gear and the tube ring gear and carried on a revolving carrier, the revolving carrier including an output shaft extending therefrom, coaxial with, and coupled to the screw; wherein the planetary pinion is axially slidable with respect to the tube ring gear.