Precision chain drive

Details Precision chain drive Precision chain drive

F - Mech Eng,Light,Heat,Weapons

16

H

74/83

F16H 7/06 (2006.01) B65G 21/22 (2006.01) B65G 23/06 (2006.01)

Patent

CA 1141199

Abstract of the Disclosure A precision roller chain with parallel runs and with an even number of links is trained around a sprocket wheel and an idler wheel and is driven around a racetrack-shaped path. To compensate for the inherent tendency of the chain to tighten and loosen in a cyclic manner, the idler wheel is formed with a smooth periphery and has a somewhat smaller diameter than the effective diameter of the sprocket wheel. In addition, compensating ramps hold the chain outwardly away from the idler wheel adjacent the tangency points of the idler wheel and keep the chain tight when the rollers of the chain are in angular positions which otherwise would cause the chain to inherently loosen.

371702

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