US PATENT SUBCLASS 205 / 668
.~ Local application of electrolyte

Current as of: June, 1999
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205 /   HD   ELECTROLYSIS: PROCESSES, COMPOSITIONS USED THEREIN, AND METHODS OF PREPARING THE COMPOSITIONS

640  DF  ELECTROLYTIC EROSION OF A WORKPIECE FOR SHAPE OR SURFACE CHANGE (E.G., ETCHING, POLISHING, ETC.) (PROCESS AND ELECTROLYTE COMPOSITION) {19}
668.~ Local application of electrolyte {2}
669  DF  .~.~> Using surface tension or capillary action to hold electrolyte in contact with workpiece
670  DF  .~.~> Through open nozzle or flow-through piping (e.g., unsupported jet, etc.)

DEFINITION

Classification: 205/668

Local application of electrolyte:

(under subclass 640) Process in which only a portion of a workpiece surface is contacted with electrolyte.

SEE OR SEARCH THIS CLASS, SUBCLASS:

652+, for electrolytic erosion in which an insulating member serves both to maintain spacing between the tool and workpiece and to confine electrolyte contact to a portion of a workpiece surface.

666+, for electrolytic erosion in which contact of the electrolyte is confined to only a portion of a workpiece surface by positioning a mask against the workpiece.

671+, for electrolytic erosion in which an entire workpiece surface is in contact with an agitated electrolyte.

SEE OR SEARCH CLASS

204, Chemistry: Electrical and Wave Energy, 224+, for electrolytic apparatus having a localized area applicator.