US PATENT SUBCLASS 425 / 39
.~.~ Female mold surface is expansible

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


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  DF  .~ Toroidal or annular female shaping means and coacting means holding preform thereagainst {8}
39.~.~ Female mold surface is expansible

DEFINITION

Classification: 425/39

(under subclass 35) Apparatus in which the shaping means defining the cavity comprises resilient material capable of being extended or expanded during use.

(1) Note. To be included herein, the mold surface must change size, not merely be designed for knockdown.