Supervising apparatus
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United States of America Patent
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Oct 13, 1987
Grant Date -
N/A
app pub date -
May 5, 1986
filing date -
May 5, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An apparatus for supervising the operation of a pneumatic safety system of an industrial door opening/closing mechanism or the like. The apparatus includes a pressure pulse generator for generating a pneumatic pressure pulse, and a pneumatic pathway for directing the pressure pulse to the pressure switch of the door opening/closing mechanism. The integrity of the safety system is confirmed if the pressure switch is moved in response to the pressure pulse.
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