Chain – staple – and horseshoe making – Chain making – Sprocket chain
Patent
1997-10-21
1999-08-24
Jones, David
Chain, staple, and horseshoe making
Chain making
Sprocket chain
474215, 474214, F16H 1304, F16G 1300
Patent
active
059410590
ABSTRACT:
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.
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Fujimoto Nobuyuki
Funamoto Takayuki
Kanehira Makoto
Maruyama Masao
Ohara Hitoshi
Jones David
Tsubakimoto Chain Co.
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