Writing instrument

Details Writing instrument Writing instrument

2005-05-31

2005-05-31

Nguyen, Tuan (Department: 3751)

Coating implements with material supply

Plural tools including projectable and retractable tool

Including individual actuators

C401S029000

Reexamination Certificate

active

06899482

ABSTRACT:
A multi-color writing instrument such as a ballpoint pen or mechanical pencil, which is adapted such that a selection of a writing color can be easily performed even under poor lighting conditions and/or by a person with poor eyesight. The writing instrument includes a plurality of reservoir tubes containing different writing colors, which are accommodated in a barrel. Operating portions are provided on the reservoir tubes and exposed outside the barrel. The operating portions can be differentiated from each other by touch. Thereby a specific one of the reservoir tubes can be selected by the operating portions for use.

REFERENCES:
patent: 3170441 (1965-02-01), Levoin
patent: 3260242 (1966-07-01), Liguori
patent: 5749663 (1998-05-01), Takahashi
patent: 1 261 212 (1961-05-01), None
patent: WO 01/03948 (2001-01-01), None

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