Double-head writing instrument

Details Double-head writing instrument Double-head writing instrument

2008-05-20

2008-05-20

Walczak, David J. (Department: 3751)

Coating implements with material supply

Diverse coating tools

Including porous tool through which material flows

C401S017000, C401S034000

Reexamination Certificate

active

11012069

ABSTRACT:
A double-head writing instrument has a barrel having a partition formed inside thereof, first and second ink-tanks provided inside the barrel so as not to communicate each other, first and second ink-retaining members connected with first and second nibs provided on an opening of the first and second ink-tanks, respectively, first and second ink reserved inside first and second ink-reservoirs, respectively. The partition is extended in an axial direction so as that the first and second ink-reservoirs overlap each other in a radial direction, and thickness C of the partition and thickness D of a side wall of the barrel connected with the partition satisfy a relation of 0.2≦C/D≦2.5.

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European Search Report for EP 04 02 9696 dated Jul. 3, 2007.

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