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:
Jun. 07, 2022
Filed:
Aug. 06, 2021
Kubota Corporation, Osaka, JP;
Yuji Fukuda, Osaka, JP;
Daiki Abe, Osaka, JP;
Ryota Hamamoto, Osaka, JP;
Kazuki Ueda, Osaka, JP;
Kohei Kurachi, Osaka, JP;
Yuya Konishi, Osaka, JP;
Masaki Inaoka, Osaka, JP;
Yasushi Otagaki, Osaka, JP;
Yuya Tanabe, Osaka, JP;
KUBOTA CORPORATION, Osaka, JP;
Abstract
A working machine includes a fan motor driven with hydraulic fluid, the fan motor including a first port and a second port, a bypass fluid passage connecting the first port of the fan motor and the second port to each other, a flow rate control valve provided on the bypass fluid passage to control a flow rate of the hydraulic fluid flowing in the bypass fluid passage, a drain passage configured to drain the hydraulic fluid upstream of the flow rate control valve, and an unloading valve shiftable between a full-closing position to close the drain passage and a full-opening position to open the drain passage.