ANTIPARALLEL LINK MECHANISM Russian patent published in 2003 - IPC

FIELD: lever mechanisms for conversion of rotation of drive crank at constant angular velocity into opposite rotation of driven crank at varying angular velocity. SUBSTANCE: proposed antiparallel link mechanism includes drive and driven cranks revolving in opposite directions; cranks are articulated to connecting rod and upright; mechanism includes also unit for bringing the mechanism out of dead position which is made in form of two levers mounted on axles of cranks and rigidly connected with them at different angles; said levers are mounted on different sides from line of connection of centers of their rotation; they are articulated together by means of flexible member. Levers are mounted at acute and obtuse angles respectively which form together angle of 180 deg., thus ensuring parallel position of levers in each dead position of mechanism. Flexible member is made in form of compression-tension spring. EFFECT: enhanced operational reliability. 3 cl, 2 dwg