Sole elements of varying density and methods of manufacture
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United States of America Patent
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Dec 16, 2008
Grant Date -
Aug 4, 2005
app pub date -
Nov 1, 2004
filing date -
Nov 11, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
The invention relates to sole elements and methods for manufacturing sole elements for shoes, in particular for sport shoes, with a specific density distribution in a transverse and/or longitudinal direction. The methods include the steps of manufacturing a sole element preform from a polymer material with a thickness varying in the transverse and/or longitudinal direction depending on the desired density distribution and the press-forming of the sole element preform in a forming tool to form the finished sole element from the sole element preform.
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