Abstract: A chain and sprocket drive in which the chain is constructed of sets of connected links, the links in all sets being constructed to drivingly contact the sprocket teeth with inside flanks only, the links in some sets of links being of a shape which differs from the links in other sets of links.

Abstract: A power transmission chain for a sprocket drive is constructed of at least two types of toed links, one engaging sprocket teeth with their outside flanks and the other engaging sprocket teeth with their inside flanks. The links are assembled as uniform sets of links of the same type, in a regular or random mixture of sets. To distinguish the types of links, one type has a curved or arcuate back and the other a flat, generally planar back. An improperly located link can be easily detected in the assembly of links.

Abstract: A power transmission chain for a sprocket drive is constructed of at least two types of toed links, one engaging sprocket teeth with their outside flanks and the other engaging sprocket teeth with their inside flanks. The links are assembled as uniform sets of links of the same type, in a regular or random mixture of sets. To distinguish the types of links, one type has a curved or arcuate back and the other a flat, generally planar back. An improperly located link can be easily detected in the assembly of links.

Abstract: A power transmission chain adapted to be used with toothed sprockets, the chain having a plurality of sets or ranks of interleaved links, the adjacent sets or ranks of which are connected by pivot means. The links of the chain each have a pair of toes separated by a crotch, each toe being defined by outside and inside flanks, the latter defining the crotch. The chain is assembled with some of the links being constructed to drivingly contact the sprocket teeth on their inside flanks and the remainder to drivingly contact the sprocket teeth on their outside flanks. The arrangement alters the normal tooth contact noise frequency.