Tsubakimoto Chain Company

Masahiro Sato

Makoto Kanehira

Masao Maruyama

Hitoshi Ohara

Nobuyuki Fujimoto

Takero Nakagawa

Takayuki Funamoto

Atsushi Kumakura

Yutaka Uchiumi

A silent chain has a plurality of interconnected plates adapted for operative engagement with toothed surfaces of a sprocket. Each of the plates has flank surface portions and crotch surface portions, with the crotch surface portions having protruding portions. The protruding portions of the crotch surface portions make contact with the toothed surfaces of the sprocket at the beginning of engagement of each plate with the sprocket and are spaced away from the toothed surfaces of the sprocket at least during engagement of the flank surface portions with toothed surfaces of the sprocket.

Plate for a silent chain having a protruding portion for reducing the

A silent chain, as well as a rocker pin and a plate of the silent chain, are provided which are capable of enhancing the transmission efficiency, and improving the fatigue strength of the plate to thereby prolong the service life of the silent chain. Rocker pins are inserted into the pin holes of each plate of a plurality of plates of a silent chain. The rocker pins are located closer to outer ends of the plate and are formed with generally flat plate abutting surfaces. The plate abutting surfaces are received by generally flat pin seating surfaces of the pin holes, respectively, to surely prevent rotation of the rocker pins relative to the pin holes. Further, in addition to the generally flat pin seating surfaces, generally flat and short continuous surfaces are formed centrally up and down of each pin hole. Thus, stress concentration on the plate is diminished and the fatigue strength of the plate is improved.

Silent chain, and rocker pin and plate thereof

A silent chain is provided in which a plurality of link plates of a certin configuration may have an identification indicator marked on a reference surface thereof at the time connecting pin inserting holes are punched into the link plates in order to ensure the link plates are properly directed in the same direction, are superposed on the connecting pins, and are constituted in a chain-like manner by the connecting pins so that meshing surfaces of the link plates mesh smoothly to prevent any meshing noise.

Silent chain

A chain guide for automobile camshaft drive chains and the like comprises a lever arm having a mounting hole for receiving a pivot shaft, and a synthetic resin chain-engaging shoe having a pair of tongues, which embrace the arm on both sides, and which have holes aligned with the mounting hole of the arm, so that the shoe cannot disengage the arm when the shoe and arm are mounted on the pivot shaft. The tongues have convex portions which engage concave contoured steps on the sides of the arm with a snap fit, so that the shoe is held in proper relationship to the arm before mounting on the pivot shaft.

Growing community of inventors

Oita, Japan

Masahiro Sato