Cap with air passage for a writing instrument

Details Cap with air passage for a writing instrument Cap with air passage for a writing instrument

1994-03-08

1995-06-27

Bratlie, Steven A.

Coating implements with material supply

Material flows through porous tool

With removable cap for tool

401213, 401243, 401247, 24 11F, B43K 900

Patent

active

054274648

ABSTRACT:
A cap is provided for a writing instrument to eliminate a potential threat to safety when swallowed. The cap permits easy assembly of an inner cap into an outer shell without using any tools. The cap has an outer shell and a tip seal member (inner shell) fitted in the outer shell to form an air passage therebetween. The outer shell has a rectangular recess at one end and an annular projection on the inner surface adjacent to a bottom edge of the rectangular recess, and snap-fit projection is engageable with a barrel of the writing instrument. The tip seal member has a coupling device for holding a clip, a plurality of first and second projections frictionally engageable with the inner surface of the outer shell so that when the coupling device of the tip sealing member is press-fitted to the rectangular recess, the first projections are engaged with the annular projection of the outer shell.

REFERENCES:
patent: 2489144 (1949-11-01), Lanoie
patent: 5000603 (1991-03-01), Isoda
patent: 5066156 (1991-11-01), Petrillo

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