US PATENT SUBCLASS 264 / 171.12
.~.~ Hollow preform

Current as of: June, 1999
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264 /   HD   PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES

165  DF  FORMING CONTINUOUS OR INDEFINITE LENGTH WORK {8}
171.1  DF  .~ Layered, stratified traversely of length, or multiphase macrostructure containing material (e.g., conjugate, composite, islands-in-sea, core-sheath, etc.) {8}
171.12.~.~ Hollow preform

DEFINITION

Classification: 264/171.12

Hollow preform:

Processes under subclass 171.1 wherein a hollow article or hollow stock material which is self sustaining is subjected to a shaping or reshaping operation.

SEE OR SEARCH THIS CLASS, SUBCLASS:

166, for processes in which a core mold may be formed or the core mold employed in the process is removed or destroyed, wherein at least for an interval of time, the mold and the molding material may be in a composite relationship.

171.26, for indefinite length hollow composites formed from nonhollow stock material.

SEE OR SEARCH CLASS

427, Coating Processes,

230+, for processes of coating the interior of hollow articles.