| 摘要 |
PROBLEM TO BE SOLVED: To provide a simple roof for protecting a workshop from sudden rain in outside work such as in a construction field. SOLUTION: A fiber material (1) is cut; an end face is adhered for forming a closed body (2); an air valve (3) with a check valve is provided in the closed body; and a plurality of fixing tools (4) are fitted to the end face. COPYRIGHT: (C)2004,JPO
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