Patent ID: 6994484
Filing Date: 2006-02-07
Classification: B43K

Abstract:
1. A composite writing tool comprising: a front shaft for accommodating a plurality of writing shafts always urged backward; a rear shaft; an intermediate shaft between the front shaft and the rear shaft for guiding the writing shafts in the axial direction, said intermediate shaft being unrotatably coupled to the front shaft and rotatably coupled to the rear shaft; a cam sleeve disposed within the rear shaft so as to be unrotatable and movable in the axial direction relative to the rear shaft, for selectively protruding one of the writing shafts and retracting all of the writing shafts upon a relative rotation between the cam sleeve and, the front shaft and the intermediate shaft; and a knocking member coupled to the cam sleeve and protruding out of the rear shaft, whereby knocking of the knocking member allows the writing shaft protruded by the cam sleeve to be subjected to a knocking operation, wherein a rear part of the intermediate shaft is inserted into the cam sleeve and a rear end of the intermediate shaft penetrates a through hole formed in an engaging wall perpendicular to the axial direction within the rear shaft and is engaged with the through hole, and wherein the cam sleeve and the knocking member are coupled to each other through an opening provided one of within the rear shaft and in the rear shaft.