Power transmission belt and method of making same
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United States of America Patent
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Jul 28, 2015
Grant Date -
Sep 12, 2013
app pub date -
Apr 22, 2013
filing date -
Sep 21, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
A method of making a belt including the steps of: (a) helically wrapping a fabric strip of predetermined width on a mandrel at a first helix angle; (b) helically winding a tensile cord onto the mandrel over the fabric at a second helix angle less than the first helix angle; (c) wrapping a sheet or a strip of elastomer material around the mandrel over the tensile cord; and (d) curing the elastomer material under pressure to form a belt sleeve. The mandrel may be grooved for making toothed belts. The fabric strip may be preformed. A resulting toothed belt has a fabric seam spanning several teeth and having a helix angle. The seam may be joined.
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