Endless belt power transmission systems or components – Friction drive belt – Including plural layers of different elastomeric materials
Patent
1984-09-04
1985-04-09
Staab, Lawrence J.
Endless belt power transmission systems or components
Friction drive belt
Including plural layers of different elastomeric materials
474265, 474263, F16G 500, F16G 100, F16G 900
Patent
active
045099383
ABSTRACT:
An endless power transmission belt having a toothed compression section and method of making the same are provided, the belt being formed substantially of polymeric materials and comprising a tension section, a compression section, and a load-carrying section disposed between the tension section and the compression section and having a transverse centerline, the compression section having an outer layer and an inner layer joined to the outer layer and defining an interface therewith that is substantially uniformly spaced from the load-carrying section by the outer layer throughout substantially the entire width and length of the belt. The compression section has an inner surface in the form of alternating transverse teeth and grooves with the grooves respectively defining the roots of the teeth. The inner layer has a thickness from the interface to the tips of the teeth thereof that is approximately the same as the thickness of the outer layer. The inner layer of the compression section is softer than the outer layer thereof and the roots of the teeth are spaced inwardly from the interface of the layers so that the root of each tooth is spaced from the interface of the layers a distance that is approximately 25% of the distance of that tooth from the centerline of the load-carrying section whereby the inner layer tends to prevent cracking of the belt in the toothed area thereof.
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Patent Application, Serial No. 232,326, filed Feb. 6, 1981, Miranti, Jr.
Bednarek Michael D.
Dayco Corporation
Staab Lawrence J.
Tassone Joseph V.
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