US PATENT SUBCLASS 164 / 320
.~.~.~ Core or internal compression member

Current as of: June, 1999
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164 /   HD   METAL FOUNDING

271  DF  MEANS TO SHAPE METALLIC MATERIAL {12}
284  DF  .~ Pressure shaping means {5}
319  DF  .~.~ Inelastic compression means for confined metal {2}
320.~.~.~ Core or internal compression member

DEFINITION

Classification: 164/320

(under subclass 319) Apparatus wherein the pressure means is an element which applies a pressure acting in a radially outward direction from a cavity in the product.