To stabilize the locking action of an anchor hole to the external peripheral face of a linear wedge material, which is pressed against the internal wall of the anchor hole.
A wedge-shaped anchor device comprises a tapered section 2, which has a tapered external peripheral face 3 whose diameter becomes smaller toward the section to be pulled out, formed at the insertion end of an anchor material 1 to be inserted and fixed in an anchor hole formed in a concrete, and the tapered external peripheral face of the tapered section wound by a linear wedge material 5 capable of being pressed against the internal peripheral face of the anchor hole due to the enlargement of the tapered section, which is caused by the taper action of the tapered external peripheral face due to the pulling out motion of the anchor material 1 on the tapered external peripheral face of the tapered section.
NOGUCHI ISAO
NOGUCHI ISAO
NAKAGAWA KATSUHIKO
YANAGI SHUZO