Patent ID: 7882689

Claim:
A method of manufacturing a power transmission chain including a plurality of link plates which are arranged in a chain movement direction and a plurality of connection members which bendably connect the plurality of link plates to each other, the method comprising: loading a force for widening a distance between a pair of through-holes by a pair of pins, the pair of pins being inserted through the pair of through-holes in a state where one sheet of the link plate comprising the pair of through-holes is disposed or plural sheets of the link plates comprising the pair of through-holes are laminated so as to load pretension to generate a predetermined compressive residual stress on the one sheet of the link plate or plural sheets of the link plates; extracting the pair of pins from the link plate or plural sheets of the link plates; and inserting the connection members through corresponding through-holes of the plurality of link plates on which the pretension is loaded so as to assemble the power transmission chain.