| 摘要 |
PROBLEM TO BE SOLVED: To provide an animal invasion-preventing device which is set to a gateway to prevent wild animals such as deer or wild boars from invading from the gateway of a farm and messily eating farm products, and prevents the invasion of the wild animals. SOLUTION: A lattice-like groove lid-like wood deck 6 comprising narrow plate-like main members 3 in the gateway of a farm, end plates 4 for connecting both the ends of the main members 3 arranged at an equal distance, and twist bars 5 fixed to the main members between the end plates at an equal distance in a state orthogonal to the main members 3, is disposed. Openings formed of the main members 2 and the twist bars 5 each has a rectangular shape into which the leg of a man can not be inserted but the leg of a wild animal can be inserted. A roller 9 is laterally disposed between the main members below the openings, and is rotated, when the leg of the wild animal is stepped in the opening and contacted with the roller 9. COPYRIGHT: (C)2011,JPO&INPIT
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