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:
Sep. 01, 2026
Filed:
Apr. 04, 2023
Kawasaki Jukogyo Kabushiki Kaisha, Kobe, JP;
Hideyasu Muraoka, Kobe, JP;
Nobuyuki Kinoshita, Kobe, JP;
Yoji Yudate, Kobe, JP;
Yoshihiko Hata, Kobe, JP;
Yuki Kuwabara, Kobe, JP;
Yuichi Miyagi, Kobe, JP;
KAWASAKI JUKOGYO KABUSHIKI KAISHA, Kobe, JP;
Abstract
This hydraulic drive device supplies a working fluid to a plurality of hydraulic cylinders including a first hydraulic cylinder and includes: a plurality of hydraulic drive systems that are respectively associated with the plurality of hydraulic cylinders and each of which supplies the working fluid to the corresponding hydraulic cylinder; and one or more communication valves that place the plurality of hydraulic drive systems in communication with each other according to a received communication command. Each of the plurality of hydraulic drive systems includes a hydraulic pump motor, an electric motor, and a directional control valve. A first hydraulic drive system which is associated with the first hydraulic cylinder includes a first directional control valve that is the directional control valve. The first directional control valve causes the working fluid to flow from the first hydraulic cylinder to the hydraulic pump motor according to a received first operation command.