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:
Oct. 11, 2016

Filed:

Apr. 12, 2013
Applicant:

Komatsu Ltd., Tokyo, JP;

Inventors:

Toru Matsuyama, Kanagawa, JP;

Yoshiki Kami, Hadano, JP;

Masashi Ichihara, Hiratsuka, JP;

Assignee:

KOMATSU LTD., Tokyo, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E02F 9/20 (2006.01); E02F 3/43 (2006.01); E02F 9/22 (2006.01); E02F 9/26 (2006.01); E02F 3/28 (2006.01);
U.S. Cl.
CPC ...
E02F 9/2033 (2013.01); E02F 3/28 (2013.01); E02F 3/435 (2013.01); E02F 9/2029 (2013.01); E02F 9/2221 (2013.01); E02F 9/2292 (2013.01); E02F 9/2296 (2013.01); E02F 9/262 (2013.01); E02F 9/265 (2013.01);
Abstract

A construction machine has a work implement and a work implement operating device. The work implement has a boom, arm, and bucket. A limit velocity determining unit determines a limit velocity of the boom from the limit velocity of the entire work implement, the arm target velocity, and the bucket target velocity. The distance when the blade tip of the bucket is positioned outside of the design plane is a positive value and the velocity in a direction from inside of the design plane toward outside of the design plane is a positive value. The first limit condition includes a condition that the limit velocity of the boom is greater than the boom target velocity. When the first limit condition is satisfied, a work implement control unit controls the boom to match the limit velocity of the boom and controls the arm to match the arm target velocity.


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