Apparatus for detecting low liquid level in bottom-draining container
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United States of America Patent
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-
Oct 17, 2000
Issued Date -
N/A
app pub date -
Jul 1, 1999
filing date -
Jun 27, 1996
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An apparatus for is disclosed for detecting low liquid level in a bottom-draining container (12), the apparatus including a spout (14, 48) extended outwardly from the container, the spout having a central bore (18) through which liquid can drain from a bottom of the container; at least one guide member (26, 56, 62) positioned in the spout; at least one float (38) mounted for movement in the spout along the guide member, the float being buoyant in a liquid to be drained from the container; a source (42) for directing a beam of radiation into the spout along a path intersected by the float when a liquid drains to a preselected level within the spout; and a device (44, 46) for detecting when the float intersects the beam. The guide member may be omitted in one embodiment.
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