Workpiece with abraded machine-readable marking therein and...

Details Workpiece with abraded machine-readable marking therein and... Workpiece with abraded machine-readable marking therein and...

B - Operations, Transporting

24

C

51/13

B24C 1/06 (2006.01) B24C 1/04 (2006.01) B24C 3/00 (2006.01)

Patent

CA 1139951

RCA 73,360 ABSTRACT OF THE DISCLOSURE A workpiece has a machine-readable coded marking abraded into the surface thereof. The marking comprises a plurality of related marks, such as a bar-code marking, which have substantially different light reflectances than the surrounding surface. The marks may be made by moving a means for abrading a defined surface area along a particular path with respect to the surface to be marked. The abrading means is selectively activated or deactivated according to a prearranged program to selectively abrade the surface.

351723

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