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, 2023
Filed:
Nov. 30, 2022
Kubota Corporation, Osaka, JP;
KUBOTA CORPORATION, Osaka, JP;
Abstract
A work machine includes a first oil passage connecting a first hydraulic pump and a first chamber of a bucket cylinder, a fourth oil passage connecting an arm control valve and a fourth chamber of an arm cylinder, a bypass oil passage connecting the fourth oil passage and the first oil passage, and a switching mechanism configured to control connection/disconnection of the fourth oil passage to/from the first oil passage via the bypass oil passage. Circuitry is configured to determine whether an uptilt operation to raise the arm and to tilt the bucket downward has been performed based on outputs of an arm operation detection sensor and a bucket operation detection sensor, and to control the switching mechanism to connect the fourth oil passage and the first oil passage when it is determined that the uptilt operation has been performed.