Patent ID: 6588688
Filing Date: 2003-07-08
Classification: B02C

Abstract:
A grinder for comminuting waste material comprising:a frame structure, comprising a grinder rotor journalled in the frame structure, which includes a plurality of cutting tools, comprising a counter blade carried by the frame structure and cooperating with the grinding rotor, and comprising feed means to positively feed waste material to the grinding rotor, wherein the feed means comprise a lower feed conveyor and an upper feed conveyor which are vertically aligned and each comprise an endless transport element running on two spaced return rollers, a lower work run of the upper conveyor and an upper work run of the lower conveyor thus forming a moving wall feeding passage for the waste material to be comminuted, wherein the endless transport element comprises a plate chain comprising plate chain members each having a plate portion and forward and rear hinge portions such that cooperating hinge portions of adjacent plate chain members form a hinge rib of constant cross section.