Suction device for liquids
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United States of America Patent
Stats
-
Dec 7, 1993
Grant Date -
N/A
app pub date -
May 3, 1991
filing date -
May 5, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Known suction devices for liquids are provided with a motor-driven suction fan, that introduces an air/liquid flow via a suction nozzle into a liquid receptacle in which the liquid is separated and collected. In order to avoid introduction of liquid into the motor-driven suction fan a device for monitoring the level of liquid in the receptacle is provided which, when a maximum filling level is reached, activates an emptying display. In order to achieve an exact determination of the filling level of the receptacle; it is suggested to provide the monitoring device in the form of a light barrier.
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