Writing implement and a fabricating method thereof
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United States of America Patent
Stats
-
Sep 20, 1994
Grant Date -
N/A
app pub date -
Feb 1, 1994
filing date -
Feb 16, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A writing implement includes a valve device provided at a specified position along a liquid passage along which liquid to be applied flows. The valve device has a ball valve member, a chamber portion in which the ball valve member is placed, the chamber portion having a cross-section in the form of a non-circular substantially circumscribing the ball valve member, a sealing portion operable to come to contact with the ball valve member entirely along a circumference of the ball valve member to interrupt the flow of liquid, and a restricting portion operable to come to contact with a circumferential portion of the ball valve member to restrict the movement of the ball valve member toward a leading end of the writing implement.
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