Measuring apparatus for determining the degree of utilization of a machine
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United States of America Patent
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May 15, 1990
Grant Date -
N/A
app pub date -
Mar 24, 1988
filing date -
Apr 4, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A portable measuring apparatus for determining utilization factor of a machine includes a microphone for detecting operational noise of the machine and a computerized evaluation circuit driving a display device. From time intervals between the detected noise the evaluation circuit generates digital data indicative of work interruptions of the machine and divides total operational time of the measuring apparatus by the total non-operative time of the machine to determine and display the utilization factor of the machine.
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