BRAKE DRIVE WITH WEARING PIECE Russian patent published in 2003 - IPC

FIELD: transport mechanical engineering; disk brakes for surface transport and flying vehicles. SUBSTANCE: proposed brake drive has body with hollow piston located inside it; piston is loaded with brake release spring; piston is provided with rod and stop and bush which is movable in axial direction; one end of said bush is provided with flange and other end is provided with working conical surface engageable with piston by means of solids of revolution located between inner cylindrical surface of piston and conical surface of bush and pressed to them by return spring supported by bearing flange of bush. Novelty of invention consists in mounting piston in sleeve secured immovably in body. Rod is rigidly connected with body. Working conical surface of bush is directed towards its bearing flange. Brake release spring is located between bearing flange of bush and sleeve and rod stop is located on side of outer end face of bush at clearance relative to solids of revolution which is equal to working stroke of brake closing. EFFECT: enhanced operational reliability; increased service life due to avoidance of wedging of brake. 1 dwg