US PATENT SUBCLASS 137 / 896
.~.~ With means to promote mixing or combining of plural fluids


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

561 R  DF  SYSTEMS {32}
602  DF  .~ Multiple inlet with single outlet {4}
896.~.~ With means to promote mixing or combining of plural fluids {1}
897  DF  .~.~.~> With selectively operated flow control means {1}


DEFINITION

Classification: 137/896

With means to promote mixing or combining of plural fluids:

(under subclass 602) System including means to promote admixing or combining together of the fluids leaving the admission passages prior to discharge from the single outlet so as to provide a single, combined, or uniformly mixed output stream.

(1) Note. Mere plural inlets to a combining chamber is insufficient for causing classification in this subclass. The means to promote combining of plural fluids must include structure for bringing the fluids into contact in a particular manner such as baffles or other means to cause turbulence, flow-shaping or fluid-guiding means to cause the fluids to be combined in a particular manner, etc.

(2) Note. In regard to the classification of a system having two or more inlets connected to a single outlet, which system including means to promote "mixing" of two or more fluids, classification in Class 366, Agitating, is proper if the plural fluids to be mixed are liquids and the means to promote mixing of the liquids is something other than an aspirator. A mixing system is properly classified in this class (137), either (a) in subclasses 888+ if the fluids (including liquids) are mixed by aspiration, or (b) in these subclasses 896+ if the fluids to be mixed are other than two or more liquids. A system including means to promote "combining" of two or more fluids, as opposed to means to promote "mixing" of two or more fluids, is classifiable in this class (137), subclasses 888+ or 896+ even if the fluids are liquids since Class 366 requires a means to promote "mixing" of the fluids.

SEE OR SEARCH THIS CLASS, SUBCLASS:

603, for faucet attachments wherein water from hot and cold water faucets is mixed or combined to provide a single output stream of intermediate temperature.

605+, for mixing faucets for hot and cold water which do not claim additional means to promote mixing.

888+, for mixing or combining of plural fluids by aspiration means wherein a fluid is mixed or combined with another by the action of entrainment, and see the search notes under subclass 888.

SEE OR SEARCH CLASS 222, Dispensing,

129+, for dispensers comprising plural sources which may also have a common discharge, and particularly indented subclasses 145.1+ for dispensers comprising plural sources having a common discharge.

239, Fluid Sprinkling, Spraying, and Diffusing,

310+, 335+, 337+, and 398+ for spraying devices having additional means to promote mixing of a plurality of different streams.

261, Gas and Liquid Contact Apparatus, appropriate subclasses for apparatus for mixing a liquid with a gas.

366, Agitating, appropriate subclasses for devices adapted to promote mixing of plural fluent materials by means other than aspiration, and see note (2) above.