Coating implements with material supply – Diverse coating tools
Reexamination Certificate
2001-03-23
2003-03-25
Walczak, David J. (Department: 3751)
Coating implements with material supply
Diverse coating tools
C401S195000, C347S109000
Reexamination Certificate
active
06536972
ABSTRACT:
FIELD OF THE INVENTION
This invention pertains to a writing device, and more particularly to a writing device incorporating multiple colors.
BACKGROUND OF THE INVENTION
The arts of writing and drawing are ancient ones. Cave paintings are some extraordinarily early examples of drawing. And written language goes back at least as far as Egyptian culture.
But there have always been limits to what can be done with writing and drawing. First and foremost is the limitation of “one pen=one color and pen size.” Even today, graphic artists have tremendous numbers of pens, each dedicated to a single combination of color and nib size. Further, manufacturers generally limit the color choices available to artists. When the graphic artist wants a different color or to use a different nib, the graphic artist must change pens, and find a pen with the best match for the desired color.
Painters typically work with only a few brushes of different sizes, and mix their own colors. But even with only a few brushes, changing the size of the brush requires changing brushes. Further, reusing brushes requires cleaning them with chemicals. And mixing colors on a palette is difficult work, requiring a high degree of skill to know what colors to mix and in what proportions.
The present invention addresses this and other problems associated with the prior art.
REFERENCES:
patent: 4758849 (1988-07-01), Piatt et al.
patent: 5388924 (1995-02-01), Chao
patent: 5501535 (1996-03-01), Hastings et al.
patent: 5599122 (1997-02-01), Yu
patent: 5988900 (1999-11-01), Bobry
patent: 6347868 (2002-02-01), Headrick et al.
Bramlett Brian W.
Brown Frank T.
Intel Corporation
Marger & Johnson & McCollom, P.C.
Walczak David J.
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