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:
Jun. 27, 2006
Filed:
Apr. 28, 2003
Naoki Sugano, Kobe, JP;
Koji Inoue, Kobe, JP;
Hideaki Yoshimatsu, Kobe, JP;
Mamoru Uejima, Akashi, JP;
Naoki Sugano, Kobe, JP;
Koji Inoue, Kobe, JP;
Hideaki Yoshimatsu, Kobe, JP;
Mamoru Uejima, Akashi, JP;
Kobelco Construction Machinery Co., Ltd., Hiroshima, JP;
Kobe Steel, Ltd., Kobe, JP;
Abstract
In a neutral range preset, there are set a zone for stopping and holding a rotating body only by a mechanical brake, a zone for holding the body only by performing position holding control, and a zone for simultaneously exerting both effects, i.e., the effect of the mechanical brake and the effect of the holding control. On-the-spot holding torque generated when the position holding control is performed is stored. The higher of the on-the-spot holding torque stored and accelerating torque according to an operation amount of the body at a rotation starting time is set as electric motor torque for acceleration. When performing a pressing work including pressing a bucket against an object for work, torque control is carried out according to the operation amount.