Tool or tool holder
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United States of America Patent
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-
Oct 2, 2001
Grant Date -
N/A
app pub date -
Aug 27, 1998
filing date -
Sep 2, 1997
priority date (Note) -
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status (Latency Note)
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Abstract
A tool holder for holding a tool has at least one sensor for measuring an operating parameter of the tool holder or the tool during the operation thereof and generating measured value signals which are fed to a signal processing unit for evaluation. The sensor is a surface acoustic wave sensor operating according to acoustic wave principles and its measured value signals are readable in a contactless manner by means of radio waves. The surface acoustic wave sensor requires no current supply circuit but instead draws transmission energy required for transmission of the measured value signals to the signal processing unit from a high frequency interrogation signal, that is transmitted by radio waves from the signal processing unit and is received by the surface acoustic wave sensor.
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