US PATENT SUBCLASS 137 / 305
.~.~.~.~ Unidirectional abutting connection between main valve or actuator and waste valve

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

272  DF  HYDRANT TYPE {15}
301  DF  .~ Protection against freezing {1}
302  DF  .~.~ Stop and waste {3}
304  DF  .~.~.~ Separate relatively movable valves with single actuator {2}
305.~.~.~.~ Unidirectional abutting connection between main valve or actuator and waste valve

DEFINITION

Classification: 137/305

(under subclass 304) Apparatus in which the drain valve is operated in only one direction by abutment of a part thereof with the control valve or a projection thereon or on the valve actuator, operation in the other direction being by weight or spring bias.

SEE OR SEARCH CLASS

222, Dispensing,

231, for free engagement connection between successive agitators and discharge assistant and/or interconnected valve, and subclass 446 for free engagement interconnection between trap chamber cut-offs in dispensers.