US PATENT SUBCLASS 425 / 390
.~.~ Opposed, registering, coacting mold cavities

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

383  DF  PREFORM RESHAPING OR RESIZING MEANS: OR VULCANIZING MEANS INCLUDING A CONFORMING PREFORM SUPPORT {10}
389  DF  .~ By fluid pressure actuated flexible diaphragm {1}
390.~.~ Opposed, registering, coacting mold cavities

DEFINITION

Classification: 425/390

(under subclass 389) Apparatus comprising means providing opposed cooperating shaping cavities having meeting portions of co-extensive area.

(1) Note. Excluded under this definition is a device in which either cavity portion includes a protuberance that extends into the other cavity.

SEE OR SEARCH THIS CLASS, SUBCLASS:

43, for a similar combination limited to toroidal female molds for making a tire, tube or endless belt.

408, for a press couple means for shaping fluent stock; see the collection of search notes thereunder.