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United States of America Patent
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-
Dec 24, 2002
Grant Date -
Sep 6, 2001
app pub date -
Feb 28, 2001
filing date -
Mar 1, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A conveyor has a rotary encoder for measuring the amount of rotation of a driven sprocket having an intermittently drivable chain reeved therearound, and a processor for processing the measurement obtained by the encoder as operation support operating data corresponding to the amount of rotation of the driven sprocket. The processor determines a reference position of the chain in time series when the chain is moved a distance at a time by intermitting driving, computes the actual position of the chain corresponding to the reference position based on the measurement obtained by the encoder, and computes the deviation of the actual position of the chain from the reference position.
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