US PATENT SUBCLASS 425 / 35
.~ Toroidal or annular female shaping means and coacting means holding preform thereagainst

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}
35.~ Toroidal or annular female shaping means and coacting means holding preform thereagainst {8}
36  DF  .~.~> Including distinct means to engage tire-type bead
37  DF  .~.~> Including core pins forming transverse voids in solid tire portion
38  DF  .~.~> Including means placing preform in mold or removing product from mold
39  DF  .~.~> Female mold surface is expansible
40  DF  .~.~> Including heating or cooling means {2}
43  DF  .~.~> Coating holding means is expansible structure
44  DF  .~.~> Means to directly apply fluid pressure to preform {1}
46  DF  .~.~> Including removable tire tread shaping portion

DEFINITION

Classification: 425/35

(under subclass 28.1) Apparatus which includes the combination of (1) a shaping means comprising a cavity of generally toroidal or annular shape and (2) means for holding preform material against said means.

SEE OR SEARCH THIS CLASS, SUBCLASS:

32, for similar structure in combination with means for converting a drum-shaped preform into a hollow toroid.