BOLT REQUIRING MUCH TIME TO BE DEMOUNTED AFTER MOUNTED ONCE

摘要

PROBLEM TO BE SOLVED: To protect an mounted object against deliberate mischief and prevent the malfunction and theft thereof.;SOLUTION: A nut is provided at the center of the head of a bolt, and another thread-off bolt is screwed and fixed to an object to be screwed and mounted, at the same time.;COPYRIGHT: (C)2004,JPO&NCIPI