| 摘要 |
PROBLEM TO BE SOLVED: To provide a movable plastic cone having functions and simplicity not found in a conventional plastic cone used for an inclined wall in concrete form work having an inclined wall surface in civil engineering and building work and usable in the same sense as a plastic cone for an upright wall. SOLUTION: The movable plastic cone is composed of a plastic cone shaft body, a metallic spherical body, a wear-resistant plastic fixed body, and a plastic cone body covering the outside. COPYRIGHT: (C)2007,JPO&INPIT
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