| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a graver capable of preventing a user from erroneously injuring his or her fingers, etc., when the user uses the graver. <P>SOLUTION: The graver 1 has a shaft cylinder 3 held by the user, a core member 2 disposed in the shaft cylinder 3, and a blade member 6 fixed to the top end of the core member 2. The graver 1 is configured so that the shaft cylinder 3 can be relatively moved with respect to the core member 2 and the blade member 6 can be switched between a projection attitude where the blade member 6 is projected from the shaft cylinder 3 and a retreat attitude where the blade member 6 is retreated into the shaft cylinder 3 by the movement in the axial direction of the shaft cylinder 3 and is fixed in each of the projection attitude and the retreat attitude by the rotation in the circumferential direction of the shaft cylinder 3. <P>COPYRIGHT: (C)2013,JPO&INPIT |
