Rigid disc plastic substrate with high stiffness insert
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United States of America Patent
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Apr 25, 2000
Grant Date -
N/A
app pub date -
Apr 22, 1998
filing date -
Jul 25, 1997
priority date (Note) -
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status (Latency Note)
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Abstract
An injection molded plastic disc substrate incorporating a stiff insert made of a very stiff material (metal, ceramic, composite . . . e.g. silicon) embedded in the plastic matrix. Preferably, the insert has a circular center region and radially extending fingers. Additional features of the web may include one or more chordal connecting elements extending between the fingers. In this way, both vibration or flutter in the circumferential or radial direction is suppressed by the insert.
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