Four part ball point pen mechanism

B - Operations – Transporting – 43 – K

Patent

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Details

B43K 7/00 (2006.01) B43K 24/06 (2006.01)

Patent

CA 2152733

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.

Mécanisme d'instrument pour écrire en quatre parties, comportant deux parties monobloc synthétiques, soit une bague de fixation et un dispositif de poussée de cartouche, qui sont axialement mobiles l'une par rapport à l'autre. Un élément moteur métallique à section hélicoïdale engage une rainure dans le dispositif de poussée de la cartouche pour le déplacer axialement. L'élément moteur est fixé axialement, mais de façon à pouvoir tourner, sur le dispositif de poussée de la cartouche. Une cartouche permettant d'écrire, par exemple une cartouche de rechange pour stylographe à bille, est fixée au dispositif de poussée de la cartouche et comporte une pointe pour écrire pouvant sortir d'une extrémité opposée de la bague de fixation et s'y rétracter.

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