DOUBLE ACTING PNEUMATIC MOTOR Russian patent published in 2004 - IPC

FIELD: aircraft industry. SUBSTANCE: proposed pneumatic motor is designed for aircraft control actuators or other control systems with pneumatic operating mechanisms using working medium at high temperature. Pneumatic motor consists of pneumatic cylinder with restrictors to regulate pressure of working medium in spaces closed from two sides by sealing covers with central holes fro travel of piston rod. Piston is made in form of flange on rod to each side of which wider parts of rubber cups made in form of V-section rings are pressed by washers in form of split bushings with skirts. Skirts of threaded bushings, whose height is somewhat smaller than width of inner part of cup, thrust through end faces against flange. Rectangular-section fluoroplastic rings are placed between flange and each bushing with clearance, above indicated cups being arranged inside fluoroplastic rings. Each fluoroplastic ring is pressed from inside by narrow outer part of cup to side wall of pneumatic cylinder. EFFECT: increased efficiency of pneumatic motor. 1 dwg