The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 15, 2014
Filed:
Mar. 16, 2010
Makoto Nagata, Tokyo, JP;
Masamichi Sawaishi, Tokyo, JP;
Masatoshi Wada, Tokyo, JP;
Nippon Steel Engineering Co., Ltd., Tokyo, JP;
Abstract
A steel pipe pile having pile bearing capacity without disturbing the surrounding ground during installation. The steel pipe pile including a first steel pipe pile that has a hollow steel pipe and a first helical fin on the outer periphery thereof from one end toward the other end at a constantly equal pitch; and a second steel pipe pile that has a hollow steel pipe and a helical fin on the outer periphery thereof from one end toward the other end at a constantly equal pitch and that is joined at an end to the other end of the first steel pipe pile, the pitch of the first helical fin and the pitch of the second helical fin being equal, and the first helical fin and second helical fin being continuous along an imaginary helix at the joint between the first steel pipe pile and the second steel pipe pile.