Patent ID: 8157246
Filing Date: 2012-04-17
Classification: B66D,F16H

Abstract:
1. A deflecting roller for deflecting a link chain in which each chain link comprises a bent wire and has a planar shape including two mutually parallel sections and two semicircular arcs, the deflecting roller comprising: a base body having an external peripheral surface and an axis of rotation; a plurality of first chain pockets located on the external peripheral surface for receiving lying chain links of the link chain and for transmitting force from the deflecting roller to the lying chain links; a plurality of second chain pockets located on the external peripheral surface receiving standing chain links of the link chain, the second chain pockets corresponding in number to the first chain pockets for the lying chain links, each second chain pocket having support areas for the standing chain links and against which at least a part of one of the parallel sections of the respective standing chain link can bear; each second chain pocket being arranged between and overlapping adjacent first chain pockets for the lying chain links; a plurality of teeth with each being arranged between two adjacent second chain pockets for the standing chain links and such that the tooth bounds the standing chain link, each tooth being defined by two tooth flanks that face in a peripheral direction of the base body; where each of the two tooth flanks of the adjacent teeth that delimit a chain pocket defines in symmetry planes that stand vertically on the rotation axis of the second chain pockets for the standing chain links a tooth flank line of curvature that approximately corresponds to a curved profile of an outer line of the adjacent semicircular arc that points in a load direction of a standing chain link arranged in the respective second chain pocket; and wherein the two tooth flanks are positioned so that their tooth flank line of curvature line measured in the symmetry plane is separated at least in an area of a tip of the tooth from the outer line of the semicircular arc of a standing chain link located in the respective chain pocket pointing in the load direction if the two adjacent line chain links are centered and lie without being influenced of an external force in their respective chain pockets and there is no free play between the chain links.