Patent ID: 6852050
Filing Date: 2005-02-08
Classification: B65G,B65H,G03G

Abstract:
1. An endless member system comprising: a moveable endless member including an edge; a motor to move said endless member in a first direction; a sensor positioned proximate to said edge of said endless member to detect movement of said endless member from a desired position in a second direction perpendicular to said first direction, and said sensor includes a wheel which contacts said edge of endless member; a drive pulley driven by said motor; a non-drive pulley; an adjustment mechanism to control said non-drive pulley and to return said endless member to said desired position, and said adjustment mechanism moves and end of said non-drive pulley when said sensor detects movement of said endless member in said second direction to return said endless member to said desired position; a heater to heat a portion of said endless member; and a resilient member, and said wheel is operatively attached to said resilient member, and a level of tension in said resilient member indicates an amount of movement of said endless member in said second direction, and wherein said resilient member has an axis, and said axis of said resilient member is perpendicular to said first direction of said endless member.