Electronic Power Assist Steering Worm Gears
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United States of America Patent
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Issued Date -
Sep 20, 2007
app pub date -
Apr 13, 2005
filing date -
Apr 16, 2004
priority date (Note) -
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Abstract
Composite worm gears having little residual stress are prepared by forming a tube (101) of synthetic resin by extrusion, compression molding, or centrifugal processing, and fixing the tube thus produced or rings (102) cut therefrom onto a boss (103) or core (105), preferably of metal. The process allows high performance high molecular weight thermoplastics to be employed.
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