US PATENT SUBCLASS 164 / 321
.~.~.~ Fluid pressure actuated

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}
321.~.~.~ Fluid pressure actuated

DEFINITION

Classification: 164/321

(under subclass 319) Apparatus which includes a fluid

pressure actuated piston compression means.

(1) Note. The inelastic compression member may either be directly or indirectly actuated by fluid force.