US PATENT SUBCLASS 429 / 82
.~ Venting structure

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

72  DF  HAVING SPECIFIED VENTING, FEEDING OR CIRCULATION STRUCTURE (OTHER THAN FEEDING OR FILLING FOR ACTIVATING DEFERRED ACTION-TYPE BATTERY) {5}
82.~ Venting structure {5}
83  DF  .~.~> Separate ventilating inlet and exhaust openings
84  DF  .~.~> Nonspill fluent electrolyte type other than gas diffusive type {1}
86  DF  .~.~> Reactive, absorbable or diffusive type
87  DF  .~.~> Gang type {1}
89  DF  .~.~> Other stopper, cap or plug type

DEFINITION

Classification: 429/82

(under subclass 72) Apparatus providing an opening for ingress or egress of a fluid.

SEE OR SEARCH THIS CLASS, SUBCLASS:

53+, for battery having means to release internal gas pressure.