Magnetic encoder
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United States of America Patent
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Aug 19, 2014
Grant Date -
Dec 27, 2012
app pub date -
May 16, 2011
filing date -
May 17, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
To provide a magnetic encoder that is stable relative to an outside force and has only small variation of a gap between a magnetic sensor and a magnetic medium. The magnetic encoder includes a magnetic medium placed on a first member and a magnetic sensor placed on the second member, the first and second member for moving relative to each other. The magnetic sensor includes a sensor substrate, a sensor holding plate for holding the sensor substrate, and a wire for extracting a signal from the magneto-resistive element to outside. The sensor holding plate includes a fixing portion for fixing the sensor holding plate to the second member, a sensor holding member for holding the sensor substrate, and a plurality of arm portions provided in the relative movement direction with the sensor holding member in-between and extending from the fixing portion to constitute a cantilever.
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