Patent ID: 7871070
Filing Date: 2011-01-18
Classification: B65H

Abstract:
1. A conveyor for conveying sheets and for depositing the sheets at a location to be stacked into stacks of sheets, the conveyor including a sensor for determining the presence of a sheet before the sheet arrives at the location, a first movable support for projecting into a projected orientation to receive the sheets as the sheets exit the conveyor, a controller coupled to the sensor and responsive to sensor inputs for controlling the first movable support, a first drive for projecting the first movable support into the projected orientation, the first drive coupled to the controller to be controlled thereby, the first drive comprising a magnetic coupler adapted to be overcome if the first movable support encounters resistance to projection into the projected orientation, the first movable support moving to a retracted orientation to assist a stack to be withdrawn therefrom, a plurality of second movable supports, the sheets comprising sheets of varying length, the sensor comprising a sensor for determining the presence and length of the sheets and for signaling to the controller the length of the sheets being conveyed, and the controller separately controlling the second movable supports to project only that number of second movable supports that lie within the length of the sheets being conveyed.