(under the class definition) Molding apparatus wherein the molding apparatus is inflatable or has an inflatable element which is deflated to facilitate the removal of the molding apparatus or the element from the product, or the product from the apparatus.
SEE OR SEARCH THIS CLASS, SUBCLASS:
66.1, for molding including means to apply force to remove or release product from the mold.
SEE OR SEARCH CLASS
425, Plastic Article or Earthenware Shaping or Treating: Apparatus,
389+, for a preform reshaping apparatus having a fluid pressure actuated flexible diaphragm and subclass 417 for an expansible shaping member in a press forming machine.