Patent ID: 7065952

Claim:
A chain having coded links which provide for an oriented placement of any coded link into a link receptor, said coded links comprising: each coded link being formed of a body having two halves, a load half pointing in a load direction and an opposing half; said body further comprising two longitunal shanks extending between said two halves, said body having an inner space with a load half inner width and an opposing half inner width; a maximum outer width of each coded link in a region of the load half being smaller than an outer width in a region of the opposing half; the smallest inner width of the coded link being equal to or greater than at least a length of a longest axis cutting across a cross sectional area of a subsequent coded link joined to this coded link; wherein both of said halves are continuously curved along the inner space of the coded link; wherein the body forming the coded link has the same cross sectional shape throughout the coded link; wherein a majority of links of the chain are coded; and wherein the longitudinal shanks has a S-form bent section.