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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 9409553 B1

PDFFull Text
Date of Patent:
Aug. 09, 2016

Filed:

Jan. 18, 2013

Control device for work vehicle

Applicant:

Hitachi Construction Machinery Co., Ltd., Bunkyo-ku, Tokyo, JP;

Inventors:

Yuta Nakamura, Tsuhiura, JP;

Katsuaki Kodaka, Tsuchiura, JP;

Masahiro Kayane, Tsuchiura, JP;

Assignee:

Hitachi Construction Machinery Co., Ltd., Tokyo, JP;

Attorney:

Crowell & Moring LLP

Primary Examiner:

Bao Long T Nguyen

Int. Cl.
CPC ...
B60T 7/04 (2006.01); B60T 13/66 (2006.01); B60T 13/68 (2006.01); E02F 9/22 (2006.01); B60T 13/16 (2006.01); F16D 55/24 (2006.01); B60T 8/17 (2006.01); B60T 8/32 (2006.01); G05G 9/047 (2006.01); E02F 9/20 (2006.01);
U.S. Cl.
CPC ...
B60T 7/045 (2013.01); B60T 8/17 (2013.01); B60T 8/326 (2013.01); B60T 13/168 (2013.01); B60T 13/662 (2013.01); B60T 13/686 (2013.01); E02F 9/2012 (2013.01); E02F 9/226 (2013.01); E02F 9/2253 (2013.01); E02F 9/2292 (2013.01); F16D 55/24 (2013.01); G05G 9/047 (2013.01);
Abstract

A control device for work vehicle includes: a hydraulic brake device that generates a braking force according to operation of a brake pedal upon traveling; a brake lock device that hydraulically locks the hydraulic brake device and unlocks hydraulic lock of the hydraulic brake device; a brake pedal operation detection unit that detects the operation of the brake pedal; a hydraulic lock directing switch that is provided on a manual operating lever for operating a work device of the work vehicle; and a control unit that controls the brake lock device such that when the hydraulic lock directing switch is operated, the hydraulic brake device is hydraulically locked and when a predetermined depression operation of the brake pedal is detected by the brake pedal operation detection unit, the hydraulic lock of the hydraulic brake device is unlocked.

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