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:
Nov. 24, 2020
Filed:
Dec. 18, 2017
Kawasaki Jukogyo Kabushiki Kaisha, Kobe, JP;
Akihiro Kondo, Kobe, JP;
Makoto Ito, Kobe, JP;
Naoki Hata, Akashi, JP;
Hideyasu Muraoka, Akashi, JP;
Hitoshi Nakagawa, Akashi, JP;
KAWASAKI JUKOGYO KABUSHIKI KAISHA, Kobe, JP;
Abstract
A hydraulic system includes: a control valve connected to a pump and a tank; a cylinder connected to the control valve by a rod-side and a head-side supply lines; a recycle line connects the rod-side to the head-side supply lines; a recycle valve on the recycle line being opened at a time of extending the cylinder and closed at a time of retracting the cylinder; a switching valve on the recycle line between the recycle valve and the head-side supply line being switched to a first state at the time of extending the cylinder and switched to a second state at the time of retracting the cylinder; a release line branches off from the recycle line at a position between the recycle and switching valves, and connects to the tank; and a release valve closed at the time of extending the cylinder and opened when retracting the cylinder.