US PATENT SUBCLASS 137 / 195
.~.~.~.~.~.~ Servo-control

Current as of: June, 1999
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137 /   HD   FLUID HANDLING

154  DF  DIVERSE FLUID CONTAINING PRESSURE SYSTEMS {7}
171  DF  .~ Fluid separating traps or vents {5}
177  DF  .~.~ Discriminating outlet for liquid {4}
183  DF  .~.~.~ With fluid responsive valve {3}
187  DF  .~.~.~.~ Level responsive {2}
192  DF  .~.~.~.~.~ Float {4}
195.~.~.~.~.~.~ Servo-control

DEFINITION

Classification: 137/195

(under subclass 192) Separating traps wherein the liquid outlet valve is controlled by a servo mechanism or pilot valve operated means which is in turn controlled by the float.

SEE OR SEARCH THIS CLASS, SUBCLASS:

191, for similar devices in which the level responsive means responds to weight or pressure of the accumulated fluid, and see the search notes thereto.

SEE OR SEARCH CLASS

236, Automatic Temperature and Humidity Regulation,

55, for a float controlled pilot with a thermostatically controlled trap in automatic temperature regulation devices.

251, Valves and Valve Actuation, 25+, for fluid pressure servo-motors for valve actuation, and see the search notes to subclass 25.