Patent ID: 7223213

Claim:
A dual-direction pulley system comprising: a first main pulley having an actuator operably attached thereto; a second main pulley; a third main pulley; a first cable wrapped at least part of the way around said first main pulley and fixed to said first main pulley and wrapped at least part of the way around said second main pulley and affixed thereto; a second cable wrapped at least part of the way around said first main pulley opposite said first cable and fixed to said first main pulley and wrapped at least part of the way around said third main pulley and affixed thereto; a tensioner cable, one end of which is wrapped at least partially around said second main pulley opposite of said first cable, and the other end of which is wrapped at least partially around said third main pulley opposite of said second cable; and a pulley arm reactive to the movement of either of said second and third main pulleys, said pulley arm attached to a load mechanism, wherein movement of said actuator causes movement of said pulley arm to engage said load mechanism.