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:
Oct. 28, 2025
Filed:
Jun. 14, 2024
Kubota Corporation, Osaka, JP;
Sumio Yagyu, Sakai, JP;
Tsunehiro Ii, Sakai, JP;
KUBOTA CORPORATION, Osaka, JP;
Abstract
A working machine includes a working device, a hydraulic system including an actuator, and a hydraulic pump to supply a hydraulic fluid to the actuator, an electric device, a power generator to generate electric power to be directly or indirectly supplied to the electric device, a first cooling system to cool the electric device with a first cooling medium, and a second cooling system to cool the power generator with a second cooling medium. The first cooling system includes a first heat exchanger to cool the hydraulic fluid through heat exchange with the first cooling medium, a second heat exchanger to cool the second cooling medium through heat exchange with the first cooling medium, and a third heat exchanger to cool the first cooling medium through heat exchange with outside air to a temperature lower than temperatures before the heat exchange of the hydraulic fluid and the second cooling medium.