Dynamic bearing manufacturing method
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United States of America Patent
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-
Aug 2, 2011
Grant Date -
Jul 5, 2007
app pub date -
Dec 28, 2006
filing date -
Jan 3, 2006
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A dynamic bearing manufacturing includes steps of: providing a bearing and a processing tool, the bearing having an axial hole, and the processing tool having at least one protruding pattern formed on an exterior wall of the processing tool; positioning the processing tool into the axial hole of the bearing; pressing the processing tool to contact with an inner wall of the bearing so as to transfer and print the protruding pattern of the processing tool onto the inner wall of the bearing; rotating the processing tool at a first rotation speed and driving the bearing to rotate at a second rotation speed; and forming at least one concave pattern on the inner wall of the bearing, and the at least one concave pattern being corresponding to the protruding pattern of the processing tool.
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