Magnetic encoder and wheel support bearing assembly using the same
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United States of America Patent
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Sep 22, 2009
Grant Date -
Nov 29, 2007
app pub date -
Sep 10, 2004
filing date -
Sep 10, 2004
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A magnetic encoder includes a multipolar magnet, having magnetic poles formed therein so as to alternate with each other in a direction circumferentially thereof, and a core metal supporting the multipolar magnet. The multipolar magnet is prepared from a sintered element formed by sintering a powdery mixture of a magnetic powder and a non-magnetic metallic powder. This multipolar magnet is fixed to the core metal to form a unitary component made up of the sintered element and the core metal. The unitary component is subjected to a surface treatment for anticorrosion.
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