Frictional transmission belt and belt-type transmission unit using the same
AssigneeBando Chemical Industries, Ltd.
InventorTakehiro Hayashi
Life of this patent
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Abstract
A frictional transmission belt looped over V-ribbed pulleys for torque transmission. The V-ribbed pulleys are coated with anticorrosive paint prior to shipment of an automobile. A surface-active layer 7 made of a surfactant is formed on surfaces of ribs 1a on a belt body 1. With the existence of the surface-active layer, generation of an abnormal sound due to stick slip is suppressed even when the anticorrosion paint has not come off, without impairing the belt transmission capability.
Claims4
A frictional transmission belt looped over a plurality of pulleys movably for torque transmission between the pulleys, wherein a surface-active layer made of a powdery surfactant is formed on substantially the entire surface of a belt body coming in contact with the pulleys, and increases the coefficient of kinetic friction in a range of slip speed exceeding 0.1 m/sec while reducing the coefficient of static friction.
Dependencies are inferred from the claim text.