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:
Jan. 30, 2007
Filed:
Jul. 02, 2003
Kouji Chikaishi, Kawasaki, JP;
Akiko Konishi, Kawasaki, JP;
Shotaro Ishii, Kawasaki, JP;
Noboru Kanayama, Kawasaki, JP;
Kazuhiro Yoshida, Kawasaki, JP;
Kouji Chikaishi, Kawasaki, JP;
Akiko Konishi, Kawasaki, JP;
Shotaro Ishii, Kawasaki, JP;
Noboru Kanayama, Kawasaki, JP;
Kazuhiro Yoshida, Kawasaki, JP;
Komatsu Ltd., Tokyo, JP;
Abstract
A hydraulic excavator is equipped with one or more downsizing scheme including at least one of: (i) a bubble removing device for removing bubbles in hydraulic fluid, (ii) a hydraulic tank including a main tank and a variable capacity tank arranged separately from each other, and (iii) a variable capacity tank or hydraulic tank which is fitted to the rear surface of the upper cover of the seat-side block. Thus, the lateral section of the seat can be ultimately downsized to provide a large space around the seat. Then, unlike the prior art, a canopy or a cab of a larger hydraulic excavator can be securely arranged on the upper swing body of a small hydraulic excavator. Since such large parts can be commonly used with large hydraulic excavators, it is possible to significantly reduce the cost of the hydraulic excavator.