US PATENT SUBCLASS 425 / 389
.~ By fluid pressure actuated flexible diaphragm

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.~ By fluid pressure actuated flexible diaphragm {1}
390  DF  .~.~> Opposed, registering, coacting mold cavities

DEFINITION

Classification: 425/389

(under subclass 383) Apparatus wherein the reshaping is accomplished at least in part by means of a flexible diaphragm, actuated by fluid pressure, which diaphragm contacts a surface of the preform to effect shaping thereof.

(1) Note. Inflatable bags, etc.., used to force a solid press member against the work are included (See subclasses

394+).

(2) Note. The fluid pressure may be due solely to the weight of a super-imposed shaping surface.

SEE OR SEARCH THIS CLASS, SUBCLASS:

27, for an "air bag" type fluid pressure actuated diaphragm as an expansible internal support in combination with means supporting a tire in tire repair apparatus.

43, for a toroidal female shaping means and a coacting fluid pressure actuated internal diaphragm in a tire or tube reshaping, resizing or vulcanizing apparatus. 52+, for an internal mold, form or support of the fluid pressure actuated diaphragm type in a tire or tube reshaping, resizing or vulcanizing apparatus.

387.1+, for preform reshaping or vulcanizing apparatus comprising means to contact the work directly with fluid pressure.

405.1+, for press molding machine utilizing differential fluid pressure in shaping bulk material; see the search notes thereunder.