Sidley & Austin
Power transmission chain with formed bushing and associated aperture
 A power transmission chain in which round pins are inserted in link apertures with D-shaped cross-section and a bushing of U-shaped cross-section. The bushing can be formed of several different shapes in order to decrease the wear between the pins and the associated link apertures. 
Borg-Warner Automotive, K.K.
F
F16G
inventional
Shozo
Wakabayashi