Pulley with controlled surface irregularity for an internal comb

Details Pulley with controlled surface irregularity for an internal comb Pulley with controlled surface irregularity for an internal comb

1998-03-30

1999-10-19

Graysay, Tamara L.

Endless belt power transmission systems or components

Friction drive pulley or guide roll

Pulley or guide roll including circumferential...

474174, 474168, F16H 5536

Patent

active

059679255

ABSTRACT:
An accessory drive system for an internal combustion engine includes a multi-ribbed belt and pulley system. Shear generators are machined, formed or molded and extend axially from the driving pulley's faces such that the shear generators expand the drive belt in a plurality of regions. The shear generators are formed as either spheroids projecting into the V of the V-pulley such that the spheroids extend from two faces of adjacent grooves at approximately the midpoint between the root and apex of the V, or as shifted circumferential grooves of a multi-ribbed pulley having a continuous wave pattern. These shear generators cause a plurality of localized high tension regions at the highest pressure zone of the belt/pulley friction interface, improving circumferential friction, and therefore torque capacity, with minimal effect on belt wear due to their smoothness.

REFERENCES:
patent: 1601662 (1926-09-01), Abbott
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patent: 4031761 (1977-06-01), Fisher et al.
patent: 4367067 (1983-01-01), Chao
patent: 4781660 (1988-11-01), Amataka et al.
patent: 4840607 (1989-06-01), Hitchcock et al.
patent: 4898567 (1990-02-01), Tatara et al.
patent: 4900294 (1990-02-01), Schneeberger
patent: 4905361 (1990-03-01), Morishita et al.

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