Friction material evaluation apparatus
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United States of America Patent
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Nov 18, 1997
Grant Date -
N/A
app pub date -
Dec 20, 1996
filing date -
Dec 20, 1996
priority date (Note) -
Expired
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Abstract
Evaluation apparatus for detecting the onset parameters of friction, wear and groan and squeal noise characteristics associated with a specimen of a particular brake friction material composition is provided with a movable apparatus table which carries both a variable-speed electric motor that drives a brake rotor and that has a near-zero speed capability and a reversible electric motor that may be selectively and independently actuated to advance the brake rotor into friction contact with a friction material specimen and with a normal-force that correlates to the output torque of the reversible electric motor.
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