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:
Dec. 29, 2015

Filed:

May. 28, 2013
Applicant:

Komatsu Ltd., Tokyo, JP;

Inventors:

Eiji Ishibashi, Komatsu, JP;

Hidehiro Hashimoto, Komatsu, JP;

Kenji Yamamoto, Kaga, JP;

Yasuhito Yonezawa, Komatsu, JP;

Fumio Imamura, Hakusan, JP;

Kenjiro Shimada, Komatsu, JP;

Assignee:

KOMATSU LTD., Tokyo, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E02F 3/84 (2006.01); E02F 3/76 (2006.01); E02F 9/20 (2006.01);
U.S. Cl.
CPC ...
E02F 3/844 (2013.01); E02F 3/7613 (2013.01); E02F 3/7618 (2013.01); E02F 9/2041 (2013.01);
Abstract

A bulldozer includes a blade pivotably attached to a vehicle body, a blade operation lever, and a blade control section. The blade operation lever outputs a lowering instruction signal, a holding instruction signal, and a raising instruction signal for the blade. The blade control section controls a height of the blade according the signal input. The blade control section can lower the blade to a predetermined position when the lowering instruction signal and the holding instruction signal are input in order after a transmission has been switched from a state, which is different from an advancing state, to the advancing state. The blade control section can raise the blade to a predetermined position when the raising instruction signal and the holding instruction signal are input in order after a transmission has been switched from a state, which is different from a reversing state, to the reversing state.


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