Patent ID: 8667736

Claim:
A barrier operator, comprising: at least one motor and; a drive pulley coupled to the motor through a mechanism so that when the motor rotates the drive pulley rotates; a second pulley; a flexible coupling member connected to the drive and second pulley; at least one track having a flange extending therefrom; at least one traveler, the at least one traveler comprising a U-shaped engagement member engaging the at least one track by enclosing the flange and configured to restrict movement of the at least one traveler in a first direction and a second direction substantially opposite the first direction; wherein the at least one traveler is connected to the flexible coupling member on one side of the drive pulley; at least one connecting arm that is coupled to the at least one traveler and is operatively connected to a barrier such that when the at least one motor is activated, the at least one traveler traverses along the at least one track according to the direction of drive pulley rotation, the traveler being effective to move the at least one connecting arm and generate a torque that rotates the barrier about an axis.