| 摘要 |
<p>PURPOSE:To let a spring and radially installed wires work synergetically and generate irregular swings by installing the anticorrosive spring whose axis is in the up and down direction rotatably and installing at any place of the spring a plurality of the wires shakably and radially with the spring being at the center. CONSTITUTION:An anticorrosive spring 2 whose axis is in the up and down direction is installed rotatably on a fixture 1 which is mounted on a steel tower material 'a'. At any places of the spring 2, a plurality of shakable wires 3 are installed radially with the spring being at the center and a wind vane 4 is also installed. Due to this structure, the radially installed fine wires 3 rotate, move, or swing due to the contact with wind or birds and the synergetic action between the spring 2 and the radially-installed wires 3 generates irregular swings. Therefore, birds coming near this equipment can be repelled constantly over a long period of time.</p> |
