Patent ID: 6557696
Filing Date: 2003-05-06
Classification: B65G

Abstract:
An inclined sandwich conveyor system for transporting library articles and materials from a lower receiving end to an upper delivery end comprising:a lower endless belt conveyor assembly for transporting materials from a lower receiving end thereof to an upper delivery end thereof including, an endless transport belt extending upward from said lower receiving end to said upper delivery end, said endless transport belt including an upward facing side for transporting materials placed thereon from said lower receiving end to said delivery end, and a lower conveyor assembly drive mechanism for driving said endless transport belt so as to cause said upward facing side to move in a first direction at a first selected speed; and an upper endless belt conveyor assembly, said upper endless belt conveyor assembly including an endless material holding belt extending from an upper conveyor assembly drive mechanism in proximity to said delivery end, freely and tension-less toward said lower receiving end, and said endless material holding belt having a downward facing side facing, and having a selected peripheral length sufficiently long so as to be capable of freely resting, in part, on said upward facing side of said endless transport belt and any materials lying on said upward facing side of said endless transport belt, and where said upper endless belt conveyor assembly drive mechanism is directly coupled to said holding belt for driving said downward facing side of said endless material holding belt to move in said first direction at a second selected speed, and said drive mechanism is a tractor drive mechanism including a pair of tension rollers on opposite sides of a central drive roller, where said material holding belt is serpentinely threaded through said combination of the central drive roller and said tension rollers.