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:
Mar. 02, 2010
Filed:
Jun. 22, 2004
Toru Nakajima, Tsuchiura, JP;
Takeshi Takahashi, Tsukuba, JP;
Toru Nakajima, Tsuchiura, JP;
Takeshi Takahashi, Tsukuba, JP;
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Abstract
A wide plate-like material (), having thin and thick wall portions in a transverse direction, is prepared by alternately joining one of flat thin plates () and one of thick corner plates () or thick plates (). The wide plate-like material () is bent at and along right and left thick corner plates () and formed into a U-shaped structure () which is U-shape in cross section. Separately from the U-shaped structure (), a plate-like member () is prepared by butt welding thick plates () to right and left sides of a thin plate (). The plate-like member () is welded to a lower side of the U-shaped structure () by laser welding or the like to form a square tubular structure, which is in a square shape in cross section and serves as a major part of an operating arm.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile