US PATENT SUBCLASS 405 / 92
.~.~.~ Condition responsive

Current as of: June, 1999
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405 /   HD   HYDRAULIC AND EARTH ENGINEERING

52  DF  FLUID CONTROL, TREATMENT, OR CONTAINMENT {7}
80  DF  .~ Flow control {7}
87  DF  .~.~ Water gate or adjustable weir {7}
92.~.~.~ Condition responsive {3}
93  DF  .~.~.~.~> To weight of liquid separated from a main body
94  DF  .~.~.~.~> To pressure on pivoted water gate {1}
96  DF  .~.~.~.~> Float {1}

DEFINITION

Classification: 405/92

Condition responsive:

(under subclass 87) Method or apparatus wherein a characteristic or a change in a characteristic is effective to change the position of the water gate.