US PATENT SUBCLASS 137 / 887
.~.~ Containing rotary valve

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

561 R  DF  SYSTEMS {32}
861  DF  .~ With flow control means for branched passages {8}
887.~.~ Containing rotary valve

DEFINITION

Classification: 137/887

Containing rotary valve:

(under subclass 861) System in which a fluent material flow control means rotates about its axis of symmetry.

SEE OR SEARCH CLASS

251, Valves and Valve Actuation,

304+, for rotary valves, per se.