US PATENT SUBCLASS 164 / 308
.~.~.~.~ Flask sealing cap contains a pressure conduit

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}
303  DF  .~.~ Injection type {4}
306  DF  .~.~.~ Direct pneumatic charging means {3}
308.~.~.~.~ Flask sealing cap contains a pressure conduit

DEFINITION

Classification: 164/308

(under subclass 306) Apparatus which includes a cover member for a mold holding means which makes a gas tight closure and contains a port through which the pneumatic charging pressure is introduced.