US PATENT SUBCLASS 137 / 121
.~.~.~.~ Control by filling outlet tank or receiver

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

87.01  DF  SELF-PROPORTIONING OR CORRELATING SYSTEMS {8}
109  DF  .~ Self-controlled branched flow systems {4}
118.01  DF  .~.~ Plural outflows {5}
119.01  DF  .~.~.~ Alternately or successively substituted outflow {7}
121.~.~.~.~ Control by filling outlet tank or receiver {1}
122  DF  .~.~.~.~.~> Float controlled

DEFINITION

Classification: 137/121

(under subclass 119) Systems in which the control of the flow is in response to a filling of a tank or receivers receiving fluid from an outflow of the system.

SEE OR SEARCH THIS CLASS, SUBCLASS:

115.01+, for by-pass control in response to a change in main line condition.

386+, for other liquid level responsive flow control.

SEE OR SEARCH CLASS

141, Fluent Material Handling, With Receiver or Receiver Coacting Means,

198+, for filling devices controlled by the quantity in a separable receiver. 222, Dispensing,

56, for delivery from a dispenser controlled by the quantity in a discharging receiver.