US PATENT SUBCLASS 251 / 142
WITH CORRELATED FLOW PATH

Current as of: June, 1999
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251 /   HD   VALVES AND VALVE ACTUATION

142WITH CORRELATED FLOW PATH {9}
149  DF  .~> Valve operated by joining flow path sections {1}
149.8  DF  .~> Valve operated by motion of flow path
149.9  DF  .~> Flow path joint interlocked with valve or actuator
144  DF  .~> Tank
145  DF  .~> Pipe side {1}
147  DF  .~> Pipe end (terminal valve)
148  DF  .~> Pipe coupling or union {3}
143  DF  .~> With mounting or support
153  DF  .~> With particular outlet or inlet {2}

DEFINITION

Classification: 251/142

(under the class definition) Subject matter in combination with a flow path wherein the combination relationship is specifically set forth.

SEE OR SEARCH CLASS

137, Fluid Handling,

561+, for distribution systems including details of the flow path which go beyond the cooperative relation thereof with a valve or its actuator, and subclasses 798+ for a flow line coupling forming part of a fluid handling system.

138, Pipes and Tubular Conduits,

43, 45 and 46 for a flow pipe with variable restrictor.