US PATENT SUBCLASS 429 / 54
.~ Elastic, resilient or spring biasing valve means

Current as of: June, 1999
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429 /   HD   CHEMISTRY: ELECTRICAL CURRENT PRODUCING APPARATUS, PRODUCT, AND PROCESS

53  DF  MEANS EXTERNALLY RELEASING INTERNAL GAS PRESSURE FROM CLOSED CELL, I.E., VALVE ETC. {2}
54.~ Elastic, resilient or spring biasing valve means {1}
55  DF  .~.~> Elastic band or O-ring valve member

DEFINITION

Classification: 429/54

(under subclass 53) Apparatus wherein the release means is either an (a) elastic, (b) resilient, or (c) spring, biasing valve structure.