| 摘要 |
PROBLEM TO BE SOLVED: To provide a door opening preventing implement wherein the diameter of its ring can freely be adjusted to the size of an arm link of a door closer, so as to fit any size of a door closer. SOLUTION: The door opening preventing implement 1, which is externally inserted onto an arm link A of a door closer to be fastened and fixed, is composed of a belt part 2 having a length at least surrounding the arm link A and a belt adjustment part 3 mounted at a free end of the belt part 2 for freely adjusting the length of the belt part 2. COPYRIGHT: (C)2009,JPO&INPIT
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