Patent ID: 8813468
Filing Date: 2014-08-26
Classification: B21K,B21L,F16G

Abstract:
1. A chain comprising alternating horizontal links and vertical links, each horizontal and vertical link having an oval profile and comprising a pair of end webs connecting two longitudinal limbs, each vertical link having a pair of supporting surfaces formed on an inside of the pair of respective end webs, each horizontal link having a pair of bearing surfaces formed on an inside of the pair of respective end webs, wherein each of the supporting surfaces includes a cylindrical shape, each cylindrical shape being centered about a respective linear center axis and extending a first length parallel to the linear center axis of the cylindrical shape, and wherein each of the bearing surfaces defines a cylindrical shape, each cylindrical shape being centered about a respective linear center axis and extending a second length parallel to the linear center axis of the cylindrical shape, each cylindrical shape complementing the cylindrical shape of each supporting surface.