Machining Spindle Speed Probes
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United States of America Patent
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Issued Date -
Jan 3, 2008
app pub date -
Jul 21, 2005
filing date -
Jul 28, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Spindle speed probes and spindles including such speed probes. The speed probe is arranged to sense the speed of rotation of a shaft making use of a magneto resistive sensor. The magneto resistive sensor is arranged in a stack with a circuit board substrate, an electronics module and a permanent magnet. An additional magnet may be provided to provide additional drag to help prevent undesirable windmilling.
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