US PATENT SUBCLASS 164 / 212
.~.~.~ Fluid pressure means reciprocating or oscillating mold shaping member

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

159  DF  MEANS TO SHAPE A FORMING SURFACE {8}
169  DF  .~ Including means for compacting particulate fluent mold materials {12}
207  DF  .~.~ Press type compactor {5}
212.~.~.~ Fluid pressure means reciprocating or oscillating mold shaping member

DEFINITION

Classification: 164/212

(under subclass 207) Apparatus including fluid pressure means moving a mold shaping member in an oscillatory or reciprocatory movement, generally to provide engagement with a substantially stationary rammer member.