US PATENT SUBCLASS 162 / 405
.~.~.~ Expanding and/or contracting core

Current as of: June, 1999
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162 /   HD   PAPER MAKING AND FIBER LIBERATION

232  DF  APPARATUS {22}
382  DF  .~ Foraminous forming mold for discrete articles (pulp molding) {9}
396  DF  .~.~ Press felting (i.e., pressure member acting on pulp on mold) {6}
405.~.~.~ Expanding and/or contracting core

DEFINITION

Classification: 162/405

(under subclass 396) Apparatus in which a core member is adapted to be changed in dimension in normal operation.

(1) Note. The core may be expanded to exert pressure on the slurry material, or it may be contracted for ease of removal from the mold.

SEE OR SEARCH CLASS

249, Static Molds,

178+, for static cores having means to expand or contract the core.