Probe assembly and circuit for measuring machine
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United States of America Patent
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-
Nov 1, 1988
Grant Date -
N/A
app pub date -
Nov 10, 1986
filing date -
Nov 10, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A probe assembly has a housing connected to the head of a coordinate measuring machine, a carrier movably connected to the housing, and a piezoelectric crystal mounted on the carrier. A stylus is mounted on the carrier. An electronic circuit receives signals from the crystal and, at an adjustable threshold value, the circuit provides output signals which are greater than and substantially simultaneous with signals from the crystal. A timer maintains the output signal for a time interval after the signal is produced by the crystal.
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