Mechanical pencil

Details Mechanical pencil Mechanical pencil

B - Operations, Transporting

43

K

B43K 21/027 (2006.01) B43K 21/16 (2006.01)

Patent

CA 2371267

There is provided a mechanical pencil which permits an effective use of a residual lead which is left in a front end of the pencil. The pencil has a tubular shaft having at its front portion a slide member which has a passage for a writing lead, and a lead advancement mechanism axially slidably disposed in the tubular shaft. The slide member and at least one element of the lead advancement mechanism are co-acted and interlocked with each other. This structure permits a favorable feeling of writing and an effective use of the writing lead.

L'invention concerne un porte-mine dont la configuration permet l'utilisation efficace du reste de mine au bout de l'instrument d'écriture. Ledit porte-mine comprend un élément coulissant présentant un trou d'insertion de mine et disposé à l'avant du boîtier, et un moyen pour faire avancer la mine disposé à l'intérieur du boîtier de manière à pouvoir effectuer un mouvement de va-et-vient, l'élément coulissant fonctionnant avec le recul d'au moins un des éléments du moyen pour faire avancer la mine. Cette disposition permet d'écrire sans avoir une sensation d'inconfort durant la phase d'écriture avec le reste de la mine; ainsi, le reste de la mine peut être utilisé de manière efficace.

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