| 摘要 |
<P>PROBLEM TO BE SOLVED: To construct a grating fence capable of being installed as a protective fence with increased strength of gratings and permanently displaying characters, symbols, pattern, etc., without the need of maintenance at a low cost. <P>SOLUTION: In a twisted grating fence, commercial flat steel is used and several to several tens of gratings 3 twisted at every 180 degrees at fixed parts and at fixed intervals to increase flexural strength are connected. Also, artistic gratings are produced by drawing the characters, the symbols and the patterns by the twisted parts at positions fixed beforehand, the characters, the symbols and the patterns are displayed by connecting several to several tens of them, and the characters, the symbols and the patterns are displayed permanently without the need of maintenance. <P>COPYRIGHT: (C)2012,JPO&INPIT |
