Four part ball point pen mechanism

Details Four part ball point pen mechanism Four part ball point pen mechanism

1994-07-26

1996-05-21

Bratlie, Steven A.

Coating implements with material supply

Projectable and retractable tool

By screw mechanism

401 99, B43K 2406

Patent

active

055183301

ABSTRACT:
A four part writing instrument mechanism includes a one piece synthetic anchor bushing and a one piece synthetic cartridge shuttle which are axially movable with respect to each other. A metal driver with a helical section engages a groove in the shuttle for moving the shuttle axially. The driver is axially fixed but rotatable on the anchor bushing. A writing cartridge, such as a ball point pen cartridge, is fixed to the shuttle and has a writing point which is extendable from and retractable into an opposite end of the anchor bushing.

REFERENCES:
patent: 2516938 (1950-08-01), Aimes
patent: 2753844 (1956-07-01), Boss
patent: 3272184 (1966-09-01), Crowley
patent: 3436160 (1969-04-01), Lanoie
patent: 3630629 (1971-12-01), DiSpirito
patent: 5048991 (1991-09-01), Guo

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