US PATENT SUBCLASS 429 / 131
.~.~ Having electrode enclosing feature

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

122  DF  CURRENT PRODUCING CELL, ELEMENTS, SUBCOMBINATIONS AND COMPOSITIONS FOR USE THEREWITH AND ADJUNCTS {16}
129  DF  .~ Separator, retainer or spacer insulating structure (other than a single porous flat sheet, or either an impregnated or coated sheet not having distinct layers) {4}
131.~.~ Having electrode enclosing feature {4}
132  DF  .~.~.~> Separating material in bulk form about electrode
133  DF  .~.~.~> Cylindrical unit cell type, flat unit cell type or porous cup type {1}
136  DF  .~.~.~> Envelope type {3}
140  DF  .~.~.~> Tubular type {1}

DEFINITION

Classification: 429/131

(under subclass 129) Apparatus which encloses or is adapted for enclosing an electrode to physically separate an active material from an opposing electrode and to functionally retain or hold the active material in position to stop transfer of an active material to the opposing electrode.