Writing implement

Details Writing implement Writing implement

2006-08-01

2006-08-01

Walczak, David J. (Department: 3751)

Coating implements with material supply

Concentrated material and liquid carrier

Concentrated material in or adjacent reservoir outlet or feeder

C401S041000, C401S209000

Reexamination Certificate

active

07083349

ABSTRACT:
A writing implement includes a cylindrical shaft member, a pen tip member which is fixed to one end of the shaft member and from which colored ink seeps out, liquid for ink which is stored in the shaft member and which comprises a part of the colored ink seeping out from the end of the pen tip member, and colorant to be added to the above described liquid for ink to be the colored ink. Moreover, at least a part of a cylindrical side surface of the shaft member corresponding to the storing part of the liquid for ink is formed to be transparent. Between the liquid for ink and the colorant-storing part storing the colorant is provided a colorant-adsorbing core which introduces the liquid for ink into the colorant-storing part while capturing the colorant diffusing toward the storing part of the liquid for ink.

REFERENCES:
patent: 1935639 (1933-11-01), Keeshan
patent: 1978676 (1934-10-01), Kingman
patent: 1998930 (1935-04-01), Kingman
patent: 3993409 (1976-11-01), Hart
patent: 5433545 (1995-07-01), Keil
patent: 6244774 (2001-06-01), Barosso et al.
patent: 6517273 (2003-02-01), Koyama et al.
patent: 14-14173 (1939-09-01), None
patent: 15-7603 (1940-06-01), None
patent: 01/70515 (2001-09-01), None

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