US PATENT SUBCLASS 425 / 52
.~.~.~ Fluid pressure actuated diaphragm type

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

28.1  DF  RESHAPING, RESIZING OR VULCANIZING MEANS FOR TIRE, TIRE TUBE, OR DRIVE BELT {9}
49  DF  .~ Internal mold, form or support for toroid {4}
51  DF  .~.~ Expansible surface {1}
52.~.~.~ Fluid pressure actuated diaphragm type {1}
53  DF  .~.~.~.~> Including valve stem

DEFINITION

Classification: 425/52

(under subclass 51) Apparatus in which the mold or form comprises an impermeable flexible diaphragm or bag into which fluid under pressure is introduced to cause expansion.