Multi-cartridge color pen

Details Multi-cartridge color pen Multi-cartridge color pen

2003-06-02

2004-02-03

Nguyen, Tuan N. (Department: 3751)

Coating implements with material supply

Plural exposed tools each with individual supply

Side-by-side

C401S034000

Reexamination Certificate

active

06685373

ABSTRACT:

BACKGROUND OF THE INVENTION
(a) Field of the Invention
The present invention is related to an improved structure of a multi-cartridge color pen, and more particularly, to one allows drawing of lines in different colors at the same time, and faster and easier process and assembly.
(b) Description of the Prior Art
As illustrated in
FIG. 1
of the accompanying drawings of the present invention, a multi-cartridge color pen
1
of the prior art is comprised of a barrel
11
and a base
12
with the barrel
11
containing multiple cartridges
13
each provided with a nib
13
. The base
12
and the barrel
11
being inserted into each other and fixed allowing those cartridges
13
to contact their respective nibs
14
to draw multiple lines in different colors at the same time. Upon assembling, those cartridges
13
are first placed into the barrel
11
, without any separation and fixation in position. Therefore, it prevents easy process and those cartridges
13
are vulnerable to be contaminated among one another resulting in mixture of colors. Furthermore, it is also difficult to segregate those cartridges
13
upon placing the base
12
into the barrel
11
to create the bottleneck in the manufacturing process that frustrates any attempt of improving the production efficiency.
Therefore, it is an object of the present invention to provide an improved structure of a multi-cartridge color pen which can obviate and mitigate the above-mentioned drawbacks.
SUMMARY OF THE INVENTION
The primary purpose of the present invention is to provide an improved structure of a multi-cartridge color pen that permits easier process and assembly to improve production efficiency and prevent mutual contamination of colors among cartridges for quality assurance of the color pen. To achieve the purpose, the present invention is comprised of a hollow barrel, a base and a base cover. Wherein, multiple insertion holes are provided to the base and multiple separators protrude from the lower edge of the base with each having a point bottom; and the base cover to separate multiple cartridges placed into respective sleeves to prevent mixture of colors among those cartridges. The bottom of the separate is point to allow easier assembly by separating the cartridges. The top of the barrel is graded to receive the insertion of a retaining ring to secure the connection between the base and barrel.
The foregoing object and summary provide only a brief introduction to the present invention. To fully appreciate these and other objects of the present invention as well as the invention itself, all of which will become apparent to those skilled in the art, the following detailed description of the invention and the claims should be read in conjunction with the accompanying drawings. Throughout the specification and drawings identical reference numerals refer to identical or similar parts.


REFERENCES:
patent: 3164906 (1965-01-01), Andaloro
patent: 6554517 (2003-04-01), Ahmed
patent: D476362 (2003-06-01), Whitehorn

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