US PATENT SUBCLASS 205 / 642
.~.~ To adjust voltage across or size of tool-workpiece gap

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}
641  DF  .~ With control responsive to sensed condition {2}
642.~.~ To adjust voltage across or size of tool-workpiece gap {1}
643  DF  .~.~.~> In response to sensed voltage

DEFINITION

Classification: 205/642

To adjust voltage across or size of tool-workpiece gap:

(under subclass 641) Process in which the detected characteristic or change therein is used (a) to establish proper gap or spacing between a tool and a workpiece, (b) to adjust or keep this gap or spacing constant, or (c) to vary the voltage across this gap or spacing.

(1) Note. This subclass and the subclass indented hereunder are not intended to provide for mere process shutdown in response to a sensed condition unless the shutdown is clearly accompanied by or is the result of an interruption in the gap voltage. Subclasses 641 and 644 provide for mere process shutdown in response to a sensed condition.

SEE OR SEARCH THIS CLASS, SUBCLASS:

652+, for electrolytic erosion in which the tool-workpiece gap size is either specified or maintained constant without using (1) control responsive to a sensed condition, (2) measuring, testing, or sensing, or (3) programmed, cyclic, or time responsive control.