US PATENT SUBCLASS 425 / 111
.~ And means to apply stress to preform and uniting in stressed condition

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

110  DF  DISTINCT MEANS TO FEED, SUPPORT OR MANIPULATE PREFORM STOCK AND MEANS FOR SHAPING FLUENT OR BULK STOCK TO FORM UNITED PRODUCT {6}
111.~ And means to apply stress to preform and uniting in stressed condition

DEFINITION

Classification: 425/111

(under subclass 110) Apparatus comprising means to exert or

maintain sufficient force on a preform to hold it under a tensile stress below its elastic limit during the molding operation.

(1) Note. Merely holding a preform taut is not considered placing under stress.

SEE OR SEARCH CLASS

156, Adhesive Bonding and Miscellaneous Chemical Manufacture,

160+, and 494+ for processes and apparatus for laminating a preform while in a stressed condition.

264, Plastic and Nonmetallic Article Shaping or Treating: Processes, 228, and 229 for processes of stressing a preform and uniting by a molding operation.