| 摘要 |
PROBLEM TO BE SOLVED: To make a conical body capable of reducing the diameter thereof to accurately and tightly fit to a conical hole section with a tapered face having the same inclination angle as the cone inclination angle. SOLUTION: A tapered face front end section of the conical hole section 1b with the tapered face having the same inclination angle as the cone inclination angle of the conical body capable of reducing the diameter thereof tightly fit thereto is a substantially linear hole section 7. An edge section 8 is formed with which a front section of the conical body capable of reducing the diameter thereof can make point contact. COPYRIGHT: (C)2005,JPO&NCIPI
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