Motion detecting system for use in a safety system for power equipment
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United States of America Patent
Stats
-
Mar 23, 2010
Grant Date -
Oct 18, 2007
app pub date -
Jun 4, 2007
filing date -
Aug 14, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
A woodworking machine including a detection system adapted to detect a dangerous condition between a person and a working portion of the machine is disclosed. The machine includes a reaction system associated with the detection system to cause a predetermined action to take place relative to the working portion upon detection of the dangerous condition. A motion detection system is adapted to detect motion of the working portion and to disable the reaction system when the working portion is not moving. The motion detection system may include a sensor, such as a Hall effect sensor, an electromagnetic field sensor, an optical sensor, or an electrical sensor. The woodworking machine may take the form of a saw, the working portion may be a blade adapted to cut when spinning, and the dangerous condition may be a person contacting the blade.
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