US PATENT SUBCLASS 205 / 658
.~ Simple alternating current

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}
658.~ Simple alternating current {1}
659  DF  .~.~> Plural separate currents or voltages applied

DEFINITION

Classification: 205/658

Simple alternating current:

(under subclass 640) Process in which electric current passing through the electrolyte (usually between the tool and workpiece) can be represented by a smooth sine wave having equal amplitude above and below a straight line ordinate at zero current (e.g., pure alternating current, etc.).

SEE OR SEARCH THIS CLASS, SUBCLASS:

711, for an electrolytic metal cleaning process which employs simple alternating current.