Endless power transmission belt construction and method of making the same
First Claim
1. In a method of making an endless power transmission belt construction having opposed side edge means and having an inner surface means defining a plurality of longitudinally disposed and alternately spaced apart projections and grooves for meshing with a ribbed surface means of a rotatable pulley means or the like and defining a plurality of transversely disposed and alternately spaced apart projections and grooves that respectively extend between and to said opposed side edge means, the improvement comprising the step of forming the longitudinal spacings between said transverse grooves to be staggered so as to tend to reduce noise during normal operation of said belt construction with said pulley means or the like, the step of forming causing said longitudinal spacings to comprise different lengths that are arranged in a random sequence of a certain number of said lengths with that sequence then being repeated throughout the length of said belt construction in the longitudinal direction thereof, the step of forming comprising the step of first forming said transversely disposed and alternately spaced apart projections and grooves in a surface means of a belt sleeve and then the step of forming said longitudinally disposed and alternately spaced apart projections and grooves in said surface means of said belt sleeve.
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Accused Products
Abstract
An endless power transmission belt construction and method of making the same are provided, the belt construction having opposed side edges and having an inner surface defining a plurality of longitudinally disposed and alternately spaced apart projections and grooves for meshing with a ribbed surface of a rotatable pulley or the like and defining a plurality of transversely disposed and alternately spaced apart projections and grooves that respectively extend between and to the opposed side edges, the longitudinal spacings between the transverse grooves or/and the depths of the transverse grooves being staggered so as to tend to reduce noise during normal operation of the belt construction with the pulley or the like.
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Citations
11 Claims
- 1. In a method of making an endless power transmission belt construction having opposed side edge means and having an inner surface means defining a plurality of longitudinally disposed and alternately spaced apart projections and grooves for meshing with a ribbed surface means of a rotatable pulley means or the like and defining a plurality of transversely disposed and alternately spaced apart projections and grooves that respectively extend between and to said opposed side edge means, the improvement comprising the step of forming the longitudinal spacings between said transverse grooves to be staggered so as to tend to reduce noise during normal operation of said belt construction with said pulley means or the like, the step of forming causing said longitudinal spacings to comprise different lengths that are arranged in a random sequence of a certain number of said lengths with that sequence then being repeated throughout the length of said belt construction in the longitudinal direction thereof, the step of forming comprising the step of first forming said transversely disposed and alternately spaced apart projections and grooves in a surface means of a belt sleeve and then the step of forming said longitudinally disposed and alternately spaced apart projections and grooves in said surface means of said belt sleeve.
Specification