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. 01, 2010
Filed:
Jun. 18, 2007
Takanobu Nakayoshi, Hiroshima, JP;
Hirokazu Imashige, Hiroshima, JP;
Tomohiko Asakage, Hiroshima, JP;
Kazuyuki Takeda, Hiroshima, JP;
Takanobu Nakayoshi, Hiroshima, JP;
Hirokazu Imashige, Hiroshima, JP;
Tomohiko Asakage, Hiroshima, JP;
Kazuyuki Takeda, Hiroshima, JP;
Kobelco Construction Machinery Co., Ltd., Hiroshima-shi, JP;
Abstract
In a hydraulic excavator wherein a control valve unit having a plurality of control valves in a united form and an operation pattern switching valve for switching from one to another among combined patterns of operating valves and control valves are disposed side by side in front and rear positions respectively within a valve accommodating space formed between an upper frame base plate and a floor plate in an upper rotating body, the operation pattern switching valve is inclined forwardly downward in a state in which its upper surface side including an operating lever thereof faces an operation port being formed to the floor plate.