Dental turbine support structure
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United States of America Patent
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Sep 14, 2004
Grant Date -
N/A
app pub date -
Jun 2, 2003
filing date -
Jun 2, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
A support structure for a turbine motor for use in a dental handpiece includes a pair of resilient rings to capture and limit rotation of an outer race of a bearing supporting a rotor of the turbine motor. The turbine motor is supported by first and second bearing assemblies, the first bearing assembly being proximate a dental tool and the second bearing assembly being distal the dental tool. The pair of rings are preferably located on the first bearing assembly, but optionally could be located on only the second bearing assembly or on both first and second bearing assemblies. The support structure further includes a resilient spacer ring located on the second bearing assembly to provide axial pre-load to the bearing assemblies.
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