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:
Jun. 17, 2003
Filed:
Nov. 28, 2001
Kenzo Kimoto, Hirakata, JP;
Masatake Tamaru, Tatsunokuchi-machi, JP;
Masami Naruse, Hirakata, JP;
Sadao Nunotani, Oyama, JP;
Jun Maruyama, Oyama, JP;
Kenji Kanemaru, Koriyama, JP;
Tatsuya Futami, Koriyama, JP;
Komatsu Ltd., Tokyo, JP;
Abstract
A hydraulic pipe arrangement of a working machine is not in contact with an obstacle and no torsion and no bending are generated. Accordingly, in a hydraulically driven type working machine provided with a boom ( ) having a vertical swing supporting point supported at a base end side by a machine frame and a joint connection supporting point in a front end side, an arm ( ) connected in a base end side to the joint connection supporting point, a boom driving hydraulic cylinder ( a) hoisting around a hoist supporting point provided in the machine frame so as to drive the boom, an arm driving hydraulic cylinder ( ), and a working tool driving hydraulic cylinder ( ), a swivel joint mechanism relaying a hydraulic pipe arrangement from a side of the machine frame is provided at a center of at least one of the vertical swing supporting point, the joint connection supporting point and the boom driving hydraulic cylinder hoist supporting point.