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:
Dec. 30, 2025
Filed:
Oct. 27, 2022
Applicant:
Kobelco Construction Machinery Co., Ltd., Hiroshima, JP;
Inventors:
Assignee:
KOBELCO CONSTRUCTION MACHINERY CO., LTD., Hiroshima, JP;
Primary Examiner:
Int. Cl.
CPC ...
E02F 9/22 (2006.01); F15B 11/16 (2006.01); F15B 11/17 (2006.01); F15B 21/047 (2019.01);
U.S. Cl.
CPC ...
E02F 9/226 (2013.01); E02F 9/2235 (2013.01); E02F 9/2296 (2013.01); F15B 11/165 (2013.01); F15B 11/167 (2013.01); F15B 11/17 (2013.01); F15B 21/047 (2013.01); F15B 2211/20523 (2013.01); F15B 2211/20546 (2013.01); F15B 2211/329 (2013.01); F15B 2211/6313 (2013.01); F15B 2211/6316 (2013.01); F15B 2211/633 (2013.01); F15B 2211/6652 (2013.01); F15B 2211/7053 (2013.01); F15B 2211/8609 (2013.01);
Abstract
A work machine capable of preventing cavitation more effectively. The work machine includes a work device, a variable displacement hydraulic pump, a hydraulic actuator, a posture detector, a control valve, an operation unit, an operation detector, and a controller. The controller judges whether or not a work operation detected by the operation detector is a low-pressure operation based on posture information acquired by the posture detector, and increases the pump capacity of the hydraulic pump when judging that the work operation is the low-pressure operation.