Collision protective arrangement for the measuring arm of a coordinate measuring apparatus
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United States of America Patent
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-
Jun 8, 1999
Grant Date -
N/A
app pub date -
Sep 13, 1996
filing date -
Sep 16, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention is directed to a collision protective arrangement for a measuring arm of a coordinate measuring apparatus for measuring a workpiece. The measuring arm has a surface facing toward the workpiece. The collision protective arrangement includes a part for covering and protecting the surface; and, a circuit switchable between a first electrical state wherein no contact is present between the part and the workpiece and a second electrical state indicative of a collision between the workpiece and the part. The surface of the measuring arm and the part conjointly define an interface and the circuit includes a plurality of resiliently-biased contact pins and contacts mounted at the interface to coact to switch the circuit into the second electrical state when the collision takes place.
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