Patent ID: 8038561

Claim:
A power transmission chain comprising: a plurality of links, comprising multiple rows of links, arranged in a chain advancing direction; and connecting members extending in a chain width direction perpendicular to the chain advancing direction, for connecting the plurality of links such that the links are relatively bendable to each other, the plurality of links extending from a first end of said connecting members to a second end of said connecting members, wherein the power transmission chain includes a first side area, a second side area, and a central area disposed between the first side area and the second side area, the central area being disposed adjacent a center of the power transmission chain in a chain width direction, the first side area extending from the central area to the first end of said connecting members, and the second side area extending from the central area to the second end of said connecting members, wherein of said plurality of links, each link disposed within the central area of the power transmission chain comprises a pressure contact link, said pressure contact links contacting with each other so as to be mutually pressed in the chain width direction so that said pressure contact in are relatively rotated while exerting a frictional force on each other as the power transmission chain is bent, and each link disposed within the first side area and the second side area is separated by a clearance, and wherein the connecting members include power transmission parts having pulley engaging power transmitting portions individually at a pair of end portions.