| 摘要 |
PROBLEM TO BE SOLVED: To provide an overturning preventive means of a tombstone replacing a tenon assembly. SOLUTION: A hole 6 is bored in the under surface center of a pole stone 3, and a sleeve 7a of an anchor bolt 7 is inserted into its hole, and is fixed by driving a mandrel 7b. A screw cylinder 9 is threadedly engaged with a screw part 7d of the anchor bolt, and a support bolt 5 is threadedly engaged with this cylinder. A bolt hole 10 is bored in the center on a base stone 2, and the pole stone 3 is placed on the base stone 2 by inserting the support bolt 5 into the bolt hole. A nut 11 is threadedly engaged with and fastened to the lower end of the support bolt 5 projecting under the base stone 2. COPYRIGHT: (C)2006,JPO&NCIPI
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