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:
Nov. 17, 2006
Masahiko Hamaguchi, Hirakata, JP;
Akinobu Iwasaki, Hirakata, JP;
Masahiko Hamaguchi, Hirakata, JP;
Akinobu Iwasaki, Hirakata, JP;
Komatsu Ltd., Tokyo, JP;
Abstract
A proximal portion of a first link is pivotally supported by a rear end portion of a frame. A second support shaft is provided in a distal portion of the first link. A first cylinder and a second link to which a counterweight is connected are supported by the second support shaft. A second cylinder is connected to the second link. Through pivoting of the second link by the second cylinder, the counterweight is selectively raised and lowered between a mounting position defined on the frame and a separating position above the mounting position. Through pivoting of the first link by the first cylinder, the counterweight moves between the separating position and the ground surface.