Method of manufacturing the writing tip of a ball point pen

Details Method of manufacturing the writing tip of a ball point pen Method of manufacturing the writing tip of a ball point pen

1986-07-02

1988-02-02

Goldberg, Howard N.

Metal working

Method of mechanical manufacture

Assembling or joining

15444, 15445, 401216, 401220, B23P 1100

Patent

active

047221240

ABSTRACT:
A method of manufacturing the writing tip of a ball point pen which has the steps of inwardly pressing the end of a fine metallic tube at the entire periphery to form a drawn portion, drawing the inner wall of the drawn portion to form a ball holding portion, forming a slot for leading ink at the ball seat portion, inserting the ball into the ball holding portion, and allowing the ball to be held at the ball holding portion. Thus, the durability of the tube can be improved, and the design of the supply passage of ink can be freely performed without restriction in the diameter of the ball.

REFERENCES:
patent: 3181228 (1965-05-01), Droubay
patent: 3470603 (1969-10-01), Azzariti

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