Composite plastic pulley

Details Composite plastic pulley Composite plastic pulley

1981-06-12

1984-08-28

Staab, Lawrence J.

Endless belt power transmission systems or components

Friction drive pulley or guide roll

Including plural, coaxial, circumferential belt-receiving...

474902, 474177, 474178, F16H 5536, F16H 5548

Patent

active

044682107

ABSTRACT:
A composite pulley construction intended primarily for use with the endless drive belt for vehicle accessories. The pulley is formed of a sheet metal body and has a multi-V-groove belt-receiving formation molded of plastic on an outer cylindrical wall portion of the metal body. The plastic belt-receiving formation has a series of inverted V-shaped projections forming outwardly opening V-shaped grooves located between adjacent pairs of the V-shaped projections and between a pair of outer, spaced belt-retaining annular projections also formed of plastic. The belt-retaining projections extend radially outwardly beyond the crests of the V-shaped groove-forming projections a predetermined distance and reduce sideways movement of the belt with respect to the intervening V-grooves. The outer surface of the cylindrical wall portion preferably is knurled to enhance the bonding of the plastic to the metal surface.

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