Direct-feed ballpoint writing implement
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United States of America Patent
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-
Jun 29, 2004
Grant Date -
Apr 29, 2004
app pub date -
Mar 24, 2003
filing date -
Apr 4, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A direct-feed ballpoint writing implement includes a barrel internally provided with an ink tank, a grooved member placed in a front part of the barrel and provided with a groove for guiding air and ink, an ink feed member pressed in the grooved member, a barrel tip fixedly joined to a front end part of the grooved member, a ball holder inserted in the barrel tip and put on a front end part of the ink feed member, and a ball held in a front end part of the ball holder. A compression spring may be extended at least between the ink feed member and the ball in the ball holder.
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