US PATENT SUBCLASS 119 / 81
.~.~ Movable trough-controlled supply

Current as of: June, 1999
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119 /   HD   ANIMAL HUSBANDRY

72  DF  WATERING OR LIQUID FEED DEVICE {3}
74  DF  .~ Fountains and troughs {4}
81.~.~ Movable trough-controlled supply

DEFINITION

Classification: 119/81

Fountains and troughs having depressible water receptacles connected to a water-supply valve, so as to hold it open when in its uppermost position. The weight of the water in the receptacle causes the trough to move and close the supply valve.

SEE OR SEARCH CLASS

137, Fluid Handling,

386+, for tanks combined with automatic devices for maintaining a liquid level.