Method of manufacturing a rubber sheet for a power transmission belt and a power transmission belt incorporating the rubber sheet
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United States of America Patent
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Feb 6, 2007
Grant Date -
Nov 4, 2004
app pub date -
Dec 29, 2003
filing date -
Dec 26, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of manufacturing a power transmission belt having a body with a length and a cushion rubber layer in which at least one carrying member is embedded so as to extend lengthwise of the body. The method includes the steps of: extrusion molding (a) a first rubber composition including rubber with short fibers therein and (b) a second rubber composition that is different than the first rubber composition to produce a first sheet in which the second rubber composition defines at least a part of the cushion rubber layer; applying the at least one load carrying member to the second rubber composition to produce a preform assembly; and processing the preform assembly to produce a power transmission belt.
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