US PATENT SUBCLASS 205 / 652
.~ Gap maintenance or defined tool-workpiece gap

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


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}
652.~ Gap maintenance or defined tool-workpiece gap {2}
653  DF  .~.~> Using tool electrode with two or more holes for passage of electrolyte
654  DF  .~.~> Moving tool electrode

DEFINITION

Classification: 205/652

Gap maintenance or defined tool-workpiece gap:

(under subclass 640) Process in which a method is recited for keeping a gap or spacing between the tool and workpiece essentially constant or in which this gap or spacing is mathematically specified.

(1) Note. The spacing may be maintained by the presence of a solid, insulating, nonabrasive material (e.g., stencil, mask, etc.) between the tool and workpiece.

SEE OR SEARCH THIS CLASS, SUBCLASS:

642+, for electrolytic erosion in which a sensed condition is used to adjust the voltage across or size of the tool-workpiece gap.

662+, for electrolytic erosion in which the spacing may be maintained somewhat constant by the presence of abrasive particles between the tool and workpiece, but in which the use of such particles is not intended to maintain such spacing constant.

666+, for electrolytic erosion in which a stencil or mask is attached to the workpiece, but is not used to maintain the spacing between the tool and workpiece.