Patent ID: 7080949
Filing Date: 2006-07-25
Classification: B43K

Abstract:
1. A composite writing utensil for housing a plurality of writing members, at least one of which is a propelling pencil writing member, comprising: a front shaft; a rear shaft which is rotatable relative to the front shaft and includes a cam portion, said cam portion allowing a tip of one of the plurality of writing members to selectively project from a tip of the front shaft upon a relative rotation between the front shaft and rear shaft; a guide shaft for guiding the writing member in a back-and-forth direction, said guide shaft being unrotatably coupled to the front shaft and extends within the rear shaft; an annular engaging stepped portion projecting in a direction of inner diameter formed on an inner peripheral surface of the rear shaft; a plurality of engaging pieces formed at the rear end portion of the guide shaft to pass through an inner diameter-side hollow portion defined by the annular engaging stepped portion of the rear shaft and to be engaged with the engaging stepped portion of the rear shaft; and a lead guiding member rotatable relative to the rear shaft disposed between the plurality of the engaging pieces, said lead guiding member including a lead guiding portion which further extends forward and communicates to an aperture at a rear end of a lead case of the propelling pencil writing member, and a plurality of concave portions on its peripheral surface to be fitted with the plurality of the engaging pieces; wherein the lead guiding member together with the engaging pieces of the guide shaft pass through the inner diameter-side hollow portion of the annular engaging stepped portion formed on the rear shaft.