Rotary joint
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United States of America Patent
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Jan 27, 2009
Grant Date -
Apr 3, 2008
app pub date -
Oct 2, 2006
filing date -
Oct 2, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
A rotary joint and a method for making a rotary joint are disclosed. The rotary joint includes a cylindrical core having an external surface including at least two circumferentially oriented groove regions and a partition region intermediate the groove regions. At least a portion of the surface of a groove region is electrically conductive and at least a portion of the surface of the partition region is electrically insulating. A method for making the rotary joint includes molding the cylindrical core from a plateable resin and molding over at least some of the plateable resin with a non-plateable resin. A conductive material is plated over the plateable resin to form a rotary joint of unitary structure, eliminating the numerous components and assembly steps associated with conventional rotary joints.
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