Patent ID: 9376257
Filing Date: 2016-06-28
CPC Classification: B65G,G03G

Claim Text:
1. A belt tracking system for controlling the lateral position of a movable belt entrained about a plurality of generally parallel rollers for moving in a trans-axial direction perpendicular to an axial direction in which the rollers extend parallel to each other, the system comprising: a roller shaft extending outward in the axial direction from an axial end of a specific one of the plurality of generally parallel rollers; a slidable member slidably disposed around the roller shaft to move along the roller shaft as the belt moves laterally outward in the axial direction; a rotation restrictor disposed adjacent to the slidable member to restrict rotation of the slidable member around the roller shaft; and a stationary guide member fixed in position adjacent to the roller shaft to define a guide surface therealong, wherein the slidable member is slidable against the stationary guide member to cause the roller shaft to move in a direction perpendicular to the axial direction upon lateral displacement of the movable belt, and wherein the stationary guide member is fixed relative to the movement of the roller shaft in the direction perpendicular to the axial direction.