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:
Feb. 26, 2013
Filed:
Jul. 09, 2009
Kazuhito Nishimaki, Komatsu, JP;
Michihiro Aida, Komatsu, JP;
Noritoshi Takekuma, Komatsu, JP;
Osamu Kodama, Komatsu, JP;
Takafumi Takenaka, Komatsu, JP;
Kazuhito Nishimaki, Komatsu, JP;
Michihiro Aida, Komatsu, JP;
Noritoshi Takekuma, Komatsu, JP;
Osamu Kodama, Komatsu, JP;
Takafumi Takenaka, Komatsu, JP;
Komatsu Ltd., Tokyo, JP;
Abstract
A motor grader includes an engine, a torque converter, a drive wheel, an engine revolution detector, and a control unit. The torque converter, including a lock-up clutch, transmits driving force from the engine. The drive wheel is rotationally driven by the driving force from the engine. The engine revolution detector detects engine revolution. When the lock-up clutch is engaged, the control unit is configured to: maintain the engaged state of the lock-up clutch when the engine revolution is greater than a predetermined lock-up release revolution lower than a low idle revolution; and switch the lock-up clutch into a disengaged state when the engine revolution is less than or equal to the predetermined lock-up release revolution.