Reservoir type writing pen having micro-porous straight-liquid structure
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United States of America Patent
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Jul 4, 2017
Grant Date -
Jan 5, 2017
app pub date -
Jul 30, 2015
filing date -
Jul 2, 2015
priority date (Note) -
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Abstract
A reservoir type writing pen having a micro-porous straight-liquid structure comprises a writing pen core (9); wherein the micro-porous straight-liquid structure includes an air pressure balance plug (3), a liquid storage pipe (11) configured for storing liquid ink, and a liquid guiding device configured for leading the liquid ink in the liquid storage pipe (11) into the writing pen core (9). The present application adopts the gap between the relaying pen core and the writing pen core, the ventilating core and the nano breathing plate to realize keeping the inner air pressure of the liquid storage space and the outside atmosphere pressure consistent. The writing pen of the present application has a simple structure, and the producing processes of the ventilating core have been matured, which can reduce the producing cost greatly.
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