Ink control mechanism for a pen

Details Ink control mechanism for a pen Ink control mechanism for a pen

2006-01-31

2006-01-31

Walczak, David J. (Department: 3751)

Coating implements with material supply

Including means to apply material-moving force

Manually engageable resilient wall or wall portion

C401S205000, C401S206000, C401S017000, C401S023000

Reexamination Certificate

active

06991395

ABSTRACT:
The ink control structure of a pen includes a pen body and a pen point. The interior of the pen body is an empty cavity for containing ink and the surrounding wall of the pen body is flexible and can be pinched. The inner end of the pen point joins the empty cavity via an ink supply passage. The pen point has hydraulic conductivity and can lead the ink out. The pressure-driven control valve is configured into the ink supply passage and includes a stopper end and an elastic part. The elastic part can normally push the stopper end to pressingly meet a narrow opening in the ink supply passage, thus forming a state that the ink is prevented from a flow out. While under pressure, the ink supply passage is opened to make ink flow downward to the pen point for applying or writing.

REFERENCES:
patent: 3196886 (1965-07-01), Brown
patent: 4867593 (1989-09-01), Kurokawa et al.
patent: 6332730 (2001-12-01), Taghavi-Khanghah
patent: 6464418 (2002-10-01), Visser et al.

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