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.

Date of Patent:
Feb. 21, 2017

Filed:

Jul. 12, 2013
Applicant:

Komatsu Ltd., Tokyo, JP;

Inventors:

Shinya Kondou, Hitachinaka, JP;

Ryuuen Kou, Hiratsuka, JP;

Assignee:

Komatsu Ltd., Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H 61/16 (2006.01); F16H 61/10 (2006.01); F16H 61/18 (2006.01); F16H 61/21 (2006.01); E02F 9/20 (2006.01);
U.S. Cl.
CPC ...
F16H 61/16 (2013.01); F16H 61/10 (2013.01); F16H 61/18 (2013.01); E02F 9/2079 (2013.01); F16H 61/21 (2013.01); F16H 2061/163 (2013.01); F16H 2306/20 (2013.01);
Abstract

A work vehicle including a transmission that transmits power of an engine to wheels at a plurality of different transmission gear ratios, the work vehicle traveling while maintaining a targeted speed by controlling a degree of opening of an accelerator, brakes, and the transmission, wherein the work vehicle includes a controller which inhibits change in the transmission gear ratio of the transmission when the transmission shifts up before lapse of a first predetermined time after the transmission shifts down while the vehicle is running downhill and then before a second predetermined time elapses, the transmission shifts down while the vehicle is running downhill.


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