| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a writing utensil which can accurately and surely fix its shaft tube or outer cap casing to other parts made of a plastic or metal, the shaft tube or the outer cap casing being made of a hard and fragile ceramic or porcelain, making dimensional accuracy difficult. <P>SOLUTION: Ground cutouts 11, 11 being formed by grinding the periphery of both ends of the shaft tube 1 made of porcelain, and the rear end of the connection tube 2 disposed in the shaft tube being screwed into the rear crown 3 mounted on the rear end of the shaft tube, annular squeezing members 4, 5 disposed so as to fit into the respective ground cutouts on both ends of the shaft tube hold the shaft tube in a squeezing manner by screwing the rear crown into the connection tube. <P>COPYRIGHT: (C)2009,JPO&INPIT |
