US PATENT SUBCLASS 425 / 153
.~ Secondary means to prevent accidental motion, (e.g., mold closing, etc.) or means to relieve gaseous pressure

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

151  DF  WITH SAFETY FEATURE {3}
153.~ Secondary means to prevent accidental motion, (e.g., mold closing, etc.) or means to relieve gaseous pressure

DEFINITION

Classification: 425/153

(under subclass 151) Apparatus comprising (1) an auxiliary means to hold an element in a given position upon failure of a primary holding means or (2) means to release excessive gaseous pressure.

SEE OR SEARCH THIS CLASS, SUBCLASS:

812, for a digest collection of venting means, per se.