Writing implement

Coating implements with material supply – Concentrated material and liquid carrier – Concentrated material in or adjacent reservoir outlet or feeder

Reexamination Certificate

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Details

C401S040000, C401S198000, C401S192000

Reexamination Certificate

active

07070352

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 major component of the colored ink seeping out from an end of the pen tip member, colorant to be added to the liquid for ink, and a valve member for isolating the colorant from the liquid for ink. In the writing implement, at least a part of a cylindrical side surface of the shaft member corresponding to a part where the liquid for ink is stored is formed to be transparent, the valve member is positioned between the storing part of the liquid for ink and the colorant, and the storing part of the liquid for ink is provided with a pressure-regulating part.

REFERENCES:
patent: 1346184 (1920-07-01), Dickinson
patent: 1978676 (1934-10-01), Kingman
patent: 1998930 (1935-04-01), Kingman
patent: 2061405 (1936-11-01), Kingman
patent: 2581739 (1952-01-01), Wing
patent: 3720473 (1973-03-01), Nakata
patent: 3993409 (1976-11-01), Hart
patent: 5433545 (1995-07-01), Keil
patent: 6244774 (2001-06-01), Barosso 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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