System for detecting flat portion of peripheral surface of vehicle wheel
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Sep 29, 1987
Grant Date -
N/A
app pub date -
Mar 20, 1984
filing date -
Apr 7, 1983
priority date (Note) -
Expired
status (Latency Note)
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Abstract
There is disclosed a system for detecting a flat portion of a peripheral surface of a vehicle wheel disposed in rolling engagement with a track rail. A detecting device is provided for detecting one of acceleration representative of vibration of the wheel, stress developing in a support member connected to the wheel, and a noise produced by the rolling of the wheel on the rail to produce a first detection signal in response to a predetermined angular movement of the wheel. A device is provided for determining whether the first detection signal is above a predetermined reference level to produce a second detection signal in synchronism with the rotation of the wheel and indicative of a wheel flat portion of above a predetermined length.
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