US PATENT SUBCLASS 264 / 334
.~.~ Article or material ejecting, core or mold stripping or separating

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

Internet Version by PATENTEC © 1999      Terms of Use


264 /   HD   PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES

239  DF  MECHANICAL SHAPING OR MOLDING TO FORM OR REFORM SHAPED ARTICLE {10}
299  DF  .~ Shaping against forming surface (e.g., casting, die shaping, etc.) {10}
334.~.~ Article or material ejecting, core or mold stripping or separating {2}
335  DF  .~.~.~> By direct fluid pressure or pressure differential
336  DF  .~.~.~> Ejecting or stripping before full set or cure of work

DEFINITION

Classification: 264/334

(under subclass 299) Processes which include the step of removing or displacing molding material or the formed article from or relative to the shaping surface.

(1) Note. This subclass includes processes of removing articles from molds, per se, when claimed in such a manner as to have utility only in a molding operation.

SEE OR SEARCH THIS CLASS, SUBCLASS:

304, for an ejecting operation in an accretion from bulk forming process.

317, where a core or mold is destroyed for removal of the article.

318, for the molding of trapped or undercut articles wherein the articles are removed from the mold by a nonlinear motion.