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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 12129627 B1

PDFFull Text
Date of Patent:
Oct. 29, 2024

Filed:

Mar. 12, 2021

Work vehicle

Applicant:

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

Inventors:

Shinichiro Tanaka, Akashi, JP;

Hiroyasu Kodera, Kobe, JP;

Assignee:

HITACHI CONSTRUCTION MACHINERY CO., LTD., Tokyo, JP;

Attorney:

MATTINGLY & MALUR, PC

Primary Examiner:

Jacob M Amick

Int. Cl.
CPC ...
E02F 9/20 (2006.01); B60T 7/04 (2006.01); B60T 8/32 (2006.01); B60T 8/36 (2006.01); B60T 8/58 (2006.01); B60T 8/94 (2006.01); B60T 13/68 (2006.01); E02F 3/28 (2006.01); E02F 9/26 (2006.01); B60T 13/14 (2006.01);
U.S. Cl.
CPC ...
E02F 9/2083 (2013.01); B60T 7/042 (2013.01); B60T 8/326 (2013.01); B60T 8/361 (2013.01); B60T 8/58 (2013.01); B60T 8/94 (2013.01); B60T 13/686 (2013.01); E02F 9/2004 (2013.01); E02F 9/264 (2013.01); B60T 13/148 (2013.01); B60T 2220/04 (2013.01); B60T 2250/02 (2013.01); B60T 2250/04 (2013.01); B60T 2270/402 (2013.01); B60T 2270/404 (2013.01); B60T 2270/82 (2013.01); E02F 3/283 (2013.01); E02F 9/26 (2013.01);
Abstract

Provided is a work vehicle capable of satisfying a user's demand to brake performance in a flexible manner. A wheel loadercomprises a controllerstoring a plurality of control characteristics each of which is set such that a brake valve control pressure Pi of a solenoid proportional valveincreases as a pedal angle θ of a brake pedalincreases, and under the condition where a pedal angle θ is equal to or less than a predetermined pedal angle θ, an increase rate of the brake valve control pressure Pi with respect to the pedal angle θ varies. In a case where the pedal angle θ detected by a potentiometeris equal to or less than the predetermined pedal angle θth, the controller, calculates the brake valve control pressure Pi based on the selected one control characteristic.

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