Endless belt power transmission systems or components – Friction drive belt – Including embedded elongated strand having multiple...
Patent
1984-08-23
1985-06-11
Staab, Lawrence J.
Endless belt power transmission systems or components
Friction drive belt
Including embedded elongated strand having multiple...
474261, 264229, F16G 100, F16G 500, F16G 900, B29D 300
Patent
active
045226148
ABSTRACT:
An automatic tension maintaining power transmission belt, a method of making the same and a method for maintaining tension in a rubber belt transmission. The belt is made by embedding polyester fiber cord employing a polyester of high relative viscosity and after being subjected to a hot stretching process as a tensile member in rubber forming the belt. The thermal contraction force of the polyester cord is to be substantially maintained by avoiding shrinkage of the belt during vulcanization.
The belt of the present invention is characterized by exhibiting shrinkage of said polyester fiber cords through thermal contractive forces caused by frictional heat generated by slippage of the belt upon lowering of belt tension during belt running. The minimum tension necessary for transmission of power is recovered, the slippage is eliminated for a while and proper tension is maintained. Such automatic action repeats when it becomes needed again.
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Furukawa Yutaka
Matsuoka Hiroshi
Bando Chemical Industries Ltd.
Bednarek Michael D.
Staab Lawrence J.
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