US PATENT SUBCLASS 137 / 170.4
.~.~ With conditioning trap or chamber

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

154  DF  DIVERSE FLUID CONTAINING PRESSURE SYSTEMS {7}
170.1  DF  .~ Foam control in gas charged liquids {3}
170.4.~.~ With conditioning trap or chamber {2}
170.5  DF  .~.~.~> Recarbonation
170.6  DF  .~.~.~> With trap or chamber by-pass

DEFINITION

Classification: 137/170.4

(under subclass 170.1) Apparatus wherein the means for preserving or modifying the pressure of the gas includes an enclosed vessel through which such fluids pass and in which they are retained for a time.

SEE OR SEARCH THIS CLASS, SUBCLASS:

571+, for plural tanks or compartments, including traps, connected for serial flow.

613+, for single flow path devices with serial valves which may comprise alternately seated inlet and outlet valves.

SEE OR SEARCH CLASS

222, Dispensing, 424.5+, for dispensers including stationary trap chambers, and especially subclass 442 for such arrangements in which a vent is provided for the trap chamber. See also Class 222, Class Definition, "Stationary Traps," for a discussion of the disposition of stationary trap chamber structures and for a listing of other classes containing similar structures.

516, Colloid Systems and Wetting Agents; Subcombinations Thereof; Processes of Making, Stabilizing, Breaking, or Inhibiting,

115+, for processes of or compositions for or subcombination compositions for the breaking of or inhibiting of foam colloid systems, when generically claimed or when there is no hierarchically superior provision in the USPC for the specifically claimed art.