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:
May. 23, 2006
Filed:
Oct. 26, 2004
Masahiro Tosen, Fukushima, JP;
Tatsuya Futami, Fukushima, JP;
Kenji Kanemaru, Kanagawa, JP;
Yoshiaki Yamamoto, Kanagawa, JP;
Masahiro Tosen, Fukushima, JP;
Tatsuya Futami, Fukushima, JP;
Kenji Kanemaru, Kanagawa, JP;
Yoshiaki Yamamoto, Kanagawa, JP;
Komatsu Ltd., Tokyo, JP;
Komatsu Zenoah Co., Saitama, JP;
Abstract
A hydraulic circuit for a hydraulic cylinder capable of executing and adjusting a shock absorbing function at the time of stopping the operation of a cylinder piston rod and releasing the function, comprises a damping control valve (v) having a first switching position (v) which blocks the connection of the accumulation port () with outside and performs supply and discharge or discharge and supply of the operating oil with respect to the first cylinder chamber () and the second cylinder chamber (), a second switching position (v) connecting at least the accumulation port () and the second cylinder chamber (), and a third switching position (v) connecting at least the accumulation port () and the first cylinder chamber ().