Multiplex writing implement

Details Multiplex writing implement Multiplex writing implement

1995-09-18

1997-07-01

Hafer, Robert A.

Coating implements with material supply

Plural tools including projectable and retractable tool

Single actuator for simultaneous projection of one tool and...

B43K 2700

Patent

active

056429533

ABSTRACT:
A multiplex writing implement includes a mechanical pencil refill and ball-point pen refill which can be selectively used as desired, and is equipped with a delivering mechanism for delivering a stick-shaped article such as an eraser etc. The multiplex writing implement further includes: a front barrel for accommodating at least tip portions of these refills; a middle barrel for accommodating the remaining parts of these refills; a rear barrel which is able to rotate clockwise or counterclockwise relative to the middle barrel; and a cylindrical cam which moves integrally with the rear barrel and, in accordance with the rotational direction of the rear barrel, allows selective use of one of the refills by projecting any one of the refills from the front end of the front barrel and retracting the other refill. In this configuration, the front and middle barrels are integrally joined in such a state that each barrel is prevented from rotating and falling off relative to the other barrel.

REFERENCES:
patent: 5022774 (1991-06-01), Kageyama et al.
patent: 5306085 (1994-04-01), Kobayashi

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