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:
Mar. 11, 2003
Filed:
May. 31, 2001
Kazuo Fujishima, Ibaraki-ken, JP;
Hiroshi Watanabe, Ushiku, JP;
Hiroshi Ogura, Ryugasaki, JP;
Sadahisa Tomita, Ibaraki-ken, JP;
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Abstract
A setting/display processing section of a control unit comprises means and for computing the positional relationships among a machine body, an external reference and a target excavating surface by using a signal from a setting device and signals supplied from angle sensors when a front device is in a predetermined positional relationship relative to a laser reference surface, and means and for executing picture processing by using the computed positional relationships, and then producing and outputting picture signals to display the positional relationships among the body, the external reference and the target excavating surface. A display device displays an illustration of the body and lines representing respectively the external reference and the target excavating surface on a display section in accordance with the computed positional relationships. As a result, when carrying out excavation continuously over a long distance along a surface at a predetermined depth, a target excavating surface can be easily set using an external reference and a setting error relative to the external reference is less apt to occur.