Hydraulic and earth engineering – Earth treatment or control – Shoring – bracing – or cave-in prevention
Reexamination Certificate
2005-08-09
2005-08-09
Lagman, Frederick L. (Department: 3673)
Hydraulic and earth engineering
Earth treatment or control
Shoring, bracing, or cave-in prevention
C405S276000, C405S278000
Reexamination Certificate
active
06926470
ABSTRACT:
A metal sheet pile has an improved joint strength and is suitable for high productivity manufacturing. Right and left end flanges are formed at opposite sides of the rolled steel sheet pile. Joints are formed at edges of the right and left end flanges. Cross-sections of the joints are point-symmetric or line-symmetric, wherein the end flange and the joint are disposed so that a center of point-symmetry of a pair of interfitted joints is located on or near a centerline of the end flange in the thickness direction. Furthermore, the joint has a protrusion for preventing rotation near the border between the joint and the end flange portion.
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Ishiguro et al., “Ko-Yaita Ko-Ho” (“Method of construction using steel sheet pile”), vol. 1, pp. 34-36.
Ko-kan Kui Kyo-kai, “Ko-Yaita Sekkei kara sekou made” (“Steel Sheet Pile; Design and Construction”) pp. 8-9.
Eda Kazuhiko
Maeda Humitaka
Miura Yousuke
Nishiumi Kenji
Taenaka Shinji
Birch & Stewart Kolasch & Birch, LLP
Lagman Frederick L.
Nippon Steel Corporation
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