US PATENT SUBCLASS 285 / 148.23
.~.~.~ Reducer

Current as of: June, 1999
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285 /   HD   PIPE JOINTS OR COUPLINGS

144.1  DF  SERIAL,RELATIVELY MOVABLE PORTIONS {4}
148.1  DF  .~ Serial diverse single flow path or line {10}
148.22  DF  .~.~ Diverse size or shape {2}
148.23.~.~.~ Reducer {3}
148.24  DF  .~.~.~.~> Sheet-metal (e.g., stove duct, etc.)
148.25  DF  .~.~.~.~> Having bolted flange
148.26  DF  .~.~.~.~> Having clamp

DEFINITION

Classification: 285/148.23

Reducer:

(under subclass 148.22) Subject matter wherein the coupling provides for a difference in the cross-sectional areas of the lines that are being joined.

SEE OR SEARCH THIS CLASS, SUBCLASS:

123.1+, for an inner to spaced outer tube coupling.

324, for a reducing bushing in a contractible socket type joint.

SEE OR SEARCH CLASS

138, Pipes and Tubular Conduits,

40+, for flow restrictors.