Patent ID: 7845872
Filing Date: 2010-12-07
Classification: C09D

Abstract:
1. A marking instrument of non-liquid marker material, said instrument including a shank with a plurality of generally planar longitudinal outer surfaces positioned relative to one another to form a generally uniform longitudinally extending transverse cross-sectional shape having at least three vertices along the length of the shank; a tip extending from one end of the shank, said tip having a distal end and a proximal end, said tip tapering inwardly from the proximal end to the distal end, at least a portion of the tip having a generally uniform transverse cross-sectional shape; the tip and shank being integral and including material for applying a mark to a substrate; wherein the tip and shank having a plurality of longitudinally extending color zones with each zone having a different color with the number of zones being equal to the number of vertices of the transverse cross-sectional shape, each color zone extending from the distal end of the tip to a distal end of the shank; and wherein at least two of the at least three colors are exposed on each shank outer surface such that each cross-sectional vertex is contained within a respective color zone.