Position detecting apparatus utilizing a magnetic scale and sensor
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United States of America Patent
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Apr 16, 2002
Grant Date -
N/A
app pub date -
Aug 2, 2000
filing date -
Aug 2, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A position detecting apparatus including a magnetic scale and a magnetic sensor for detecting a magnetic field generated by the magnetic sensor. The magnetic field extending in a magnetism-sensing direction perpendicular to a first direction in which the magnetic sensor moves relative to the magnetic scale and a second direction in which the magnetic sensor is spaced from the magnetic scale. The positional relationship between the magnetic scale and the magnetic sensor is detected from the magnetic field detected by the magnetic sensor in the magnetism-sensing direction.
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