[Patent Granted] Through Hole Formation Device and Method for Forming Through Holes in Concrete Structures

Introducing a patented technology that provides a skin material retaining member capable of forming various lengths of through-holes in concrete structures using low-cost materials.

The purpose of the present invention is to provide a skin material holding member that can form various lengths of through holes in concrete structures using low-cost materials. When attaching the through hole forming device to the formwork, the support rod is rotated. This causes the screw-type telescopic section to extend and tighten, with the sharp ends at both ends biting into the formwork material and becoming fixed. After that, a base member is attached to both ends and the center of the support rod, and a semicircular outer shell member is further attached from the outside, thereby forming the core body. In this state, pouring concrete into the formwork allows for the formation of through holes. 【Features】 - Multiple outer skin materials can be easily connected using the skin material holding member, enabling the easy formation of long through holes in concrete structures while suppressing the enlargement of the outer skin materials. - The skin material holding member can be strongly fixed with simple operations. - Even when the outer skin material is cut to the desired size, it is less likely to create gaps, effectively preventing the intrusion of concrete. Patent Registration Number: 4270406 *For more details, please visit our website or feel free to contact us.

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