Pen core for writing instrument

Details Pen core for writing instrument Pen core for writing instrument

1984-06-01

1985-12-03

Bratlie, Steven A.

Coating implements with material supply

Material flows through porous tool

Wick feed from within reservoir to tool

401224, 401225, 401227, 401242, B43K 802, B43K 300

Patent

active

045563365

ABSTRACT:
A pen core for a writing instrument, particularly, for use in a recorder in which writing must be continuously carried out over long periods using a relatively small ink supply. The instrument has an ink conducting core for conducting ink to a writing member, and a barrel with an ink reservoir, the barrel being fitted on the outer wall of the pen core body. An annular groove in the form of a single continuous passageway is formed in the outer wall of the pen core body, the annular groove having a front end connected to an ink sucking groove, which is in turn communicated with the ink conducting core. An air passageway having a front end communicated with an air hole and a rear end communicated with the rear end of the annular groove is formed in the outer wall of the pen core body in such a manner that the air passageway does not cross the annular groove.

REFERENCES:
patent: 2260571 (1941-10-01), Johndohl
patent: 2766728 (1956-10-01), Kouacs
patent: 3411854 (1968-11-01), Rosler et al.
patent: 4239408 (1980-12-01), Mutschler

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