US PATENT SUBCLASS 137 / 9
.~.~ For producing proportionate flow


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

1  DF  PROCESSES {5}
2  DF  .~ With control of flow by a condition or characteristic of a fluid {6}
9.~.~ For producing proportionate flow


DEFINITION

Classification: 137/9

(under subclass 2) Processes in which one or more conditions of a fluent material is determined and used to produce or control the flow of a fluent material at a part of the system, which flow is regulated by the condition or conditions sensed so as to vary proportionally therewith.

(1) Note. The flow in which the condition is sensed may be the controlled flow or a different flow.

SEE OR SEARCH THIS CLASS, SUBCLASS:

82+, for pressure modulating relays or followers, per se.

98+, for self-proportioning flow systems.

109+, for self-controlled branched flow systems.