Cap for writing instrument

Details Cap for writing instrument Cap for writing instrument

1998-01-09

1999-09-28

Recla, Henry J.

Coating implements with material supply

Material flows through porous tool

With removable cap for tool

401213, 401243, 401247, 401245, B43K 500

Patent

active

059576081

ABSTRACT:
Basic configuration of a cap is as follows. When the end face of an elastic seal cylinder arranged in a cap for a writing instrument is caused to abut against and come into tight contact with the end portion of the mouth piece of a barrel cylinder to hermetically seal a point assembly and the opening portion of an air groove, first, the distal end of the point assembly is hermetically sealed with the bottom of the seal cylinder. The inner opening edge portion of the seal cylinder fits on the conical portion of an ink reservoir or of a point assembly support from an intermediate portion of the conical portion, and is gradually attached to the barrel cylinder while widening the opening portion of the seal cylinder in the radial direction. When the end face of the seal cylinder abuts against and comes into tight contact with the end portion of the mouth piece and attachment of the cap is completed, the end face of the seal cylinder and the end portion of the mouth piece are in tight contact with each other throughout the entire circumference.

REFERENCES:
patent: 4380403 (1983-04-01), Endres et al.
patent: 5154526 (1992-10-01), Bothe
patent: 5462379 (1995-10-01), Matsumoto et al.
patent: 5762435 (1998-06-01), Fukushima

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