US PATENT SUBCLASS 425 / 421
.~.~ Including vibrator or tamper

Current as of: June, 1999
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425 /   HD   PLASTIC ARTICLE OR EARTHENWARE SHAPING OR TREATING: APPARATUS

406  DF  PRESS FORMING APPARATUS HAVING OPPOSED PRESS MEMBERS {6}
412  DF  .~ Male shaping member and female mold {11}
421.~.~ Including vibrator or tamper

DEFINITION

Classification: 425/421

(under subclass 412) Apparatus which includes means for disturbing the equilibrium of the particles of a fluent material by causing relative motion of its particles to cause the material to be compacted.

SEE OR SEARCH THIS CLASS, SUBCLASS:

456, for vibrators or tampers with mechanical movement of power means; see the search notes thereunder.