US PATENT SUBCLASS 419 / 67
.~.~ Extrusion

Current as of: June, 1999
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419 /   HD   POWDER METALLURGY PROCESSES

61  DF  FORMING ARTICLES BY UNITING RANDOMLY ASSOCIATED METAL PARTICLES {2}
66  DF  .~ Consolidation of powders {3}
67.~.~ Extrusion

DEFINITION

Classification: 419/67

Extrusion:

(under subclass 66) Processes wherein the compaction is effected by forcing the powder through a restricted orifice under pressure.

(1) Note. Extrusion processes as here contemplated are sometimes referred to as die expressing or squirting.