Chain drive mechanism having noise preventing structure

Details Chain drive mechanism having noise preventing structure Chain drive mechanism having noise preventing structure

1997-03-24

1999-06-01

Stodola, Daniel P.

Endless belt power transmission systems or components

Positive drive belt

474148, 474153, 474156, F16H 706, F16H 718

Patent

active

059083646

ABSTRACT:
A noise preventing roller chain structure greatly reduces noise generated when a roller chain engages a sprocket or travels on a chain guide. The roller chain has a roller whose axial length is less than the space between opposed inner plates of the chain. A circumferentially continuous ridge portion is formed on the outer peripheral surface of the roller. A groove is formed in either the toothed surface of the sprocket or in the roller bearing surface of the chain guide. The ridge portion is fitted in the groove to guide and hold both end faces of the roller in a position spaced from the respective inner plates. An elastic member is embedded in the groove. It is thus possible to prevent the rubbing of the roller end faces with the surfaces of the inner plates and, concomitantly, the sound generated when the roller of the roller chain engages the sprocket or travels on the chain guide.

REFERENCES:
patent: 616072 (1898-12-01), Bradley
patent: 1624892 (1927-04-01), Kottlowski
patent: 1870801 (1932-08-01), Engstrom
patent: 2492219 (1949-12-01), Haefeli
patent: 2953930 (1960-09-01), Meyer
patent: 3448629 (1969-06-01), Pfrank et al.
patent: 4087136 (1978-05-01), Boggs et al.
patent: 4261214 (1981-04-01), Watanabe et al.
patent: 5346429 (1994-09-01), Farley

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