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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.:

US 9945101 B1

PDFFull Text
Date of Patent:
Apr. 17, 2018

Filed:

Mar. 27, 2015

Work vehicle

Applicant:

Komatsu Ltd., Tokyo, JP;

Inventors:

Yoshiaki Hino, Komatsu, JP;

Kazuyuki Kirino, Komatsu, JP;

Tomoyuki Iwasawa, Komatsu, JP;

Assignee:

KOMATSU LTD., Tokyo, JP;

Attorney:

Global IP Counselors, LLP

Primary Examiner:

Jacob D Knutson

Int. Cl.
CPC ...
E02F 9/20 (2006.01); F01P 7/04 (2006.01); B62D 55/06 (2006.01); E02F 9/02 (2006.01); E02F 9/08 (2006.01); E02F 9/26 (2006.01); F01P 5/04 (2006.01); E02F 3/76 (2006.01);
U.S. Cl.
CPC ...
E02F 9/2095 (2013.01); B62D 55/06 (2013.01); E02F 9/02 (2013.01); E02F 9/0866 (2013.01); E02F 9/2062 (2013.01); E02F 9/26 (2013.01); F01P 5/04 (2013.01); F01P 7/044 (2013.01); E02F 3/7609 (2013.01); F01P 2025/04 (2013.01); F01P 2025/64 (2013.01);
Abstract

A work vehicle includes a drive unit, a fan motor, a fan configured to be driven by the fan motor, an overrun state detecting unit configured to detect an overrun state of the drive unit, and a control unit. The control unit is configured to control a rotational speed of the fan to reach a first fan rotational speed by increasing the rotational speed of the fan when a detection value detected by the overrun state detecting unit becomes greater than or equal to a first threshold. The control unit is configured to control the rotational speed of the fan to reach a second fan rotational speed higher than the first fan rotational speed when the detection value becomes greater than or equal to a second threshold greater than the first threshold.

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