| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a duplex writing utensil which is equipped with a plurality of writing bodies including a mechanical pencil as one of them refills housed in the lead tank of the mechanical pencil, prevents from breaking and, at the same time, can solve the complicatedness of the supply of the refills by increasing the housing number of the refills through the increase of the capacity of the lead tank. <P>SOLUTION: In this duplex writing utensil, a plurality of kinds of writing bodies including the mechanical pencil are housed under the condition that each writing body is so constituted as to alternately extend and retract its writing tip part through a barrel tip port. The mechanical pencil is equipped with the lead tank connected with the rear end of a mechanical pencil main body and a delivering operating member joined with the rear end part of the lead tank. The lead tank is made of metal and, at the same time, a joining part formed bendable along the axial direction of the lead tank is provided at the tip part of the delivering operating member. <P>COPYRIGHT: (C)2008,JPO&INPIT |
