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. 16, 2026
Filed:
Apr. 28, 2023
Kobelco Construction Machinery Co., Ltd., Hiroshima, JP;
Yohei Ono, Hiroshima, JP;
Yuichiro Fujita, Hiroshima, JP;
Masahiro Kawamoto, Hiroshima, JP;
Natsuki Yumoto, Hiroshima, JP;
Kazushige Koiwai, Hiroshima, JP;
KOBELCO CONSTRUCTION MACHINERY CO., LTD., Hiroshima, JP;
Abstract
A drive control apparatus for a slewing-type working machine includes: a compensation control valve between a hydraulic pump and a first actuator that has an adjustable opening degree for changing a flow rate of hydraulic oil to be supplied from the hydraulic pump to the first actuator; a slewing manipulation device that receives a slewing manipulation for actuating a slewing motor; a first manipulation device that receives a first manipulation for actuating the first actuator; and a controller that adjusts, during a combined manipulation of the first manipulation and the slewing manipulation, the opening degree of the compensation control valve to cause an actual slewing acceleration to reach a target slewing acceleration according to a manipulation amount of the slewing manipulation.