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.:
Date of Patent:
Oct. 01, 2013
Filed:
Oct. 06, 2011
Kazuhiko Hayashi, Komatsu, JP;
Kenjiro Shimada, Komatsu, JP;
Kenji Okamoto, Hiratsuka, JP;
Komatsu Ltd., Tokyo, JP;
Abstract
A blade control system includes a first open ratio setting part for setting a first open ratio of a proportional control valve based on a difference angle between a blade angle and a slope angle; a second open ratio setting part for setting a second open ratio of the proportional control valve based on a difference load between a blade load and a target blade load; and a lift controlling part for controlling the proportional control valve in accordance with the second open ratio when the blade load is out of a predetermined load range and for controlling the proportional control valve in accordance with the first open ratio when the blade load is within the predetermined load range.