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:
Jul. 07, 2020
Filed:
Jan. 19, 2017
Applicants:
Sumitomo Heavy Industries, Ltd., Tokyo, JP;
Sumitomo(s.h.i.) Construction Machinery Co., Ltd., Tokyo, JP;
Inventors:
Eisuke Matsuzaki, Kanagawa, JP;
Daisuke Kitajima, Chiba, JP;
Assignees:
SUMITOMO HEAVY INDUSTRIES, LTD., Tokyo, JP;
SUMITOMO (S.H.I.) CONSTRUCTION MACHINERY CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E02F 9/22 (2006.01); F02D 29/04 (2006.01); E02F 9/20 (2006.01); F02D 29/00 (2006.01); F02D 45/00 (2006.01); E02F 3/32 (2006.01);
U.S. Cl.
CPC ...
E02F 9/2246 (2013.01); E02F 3/32 (2013.01); E02F 9/20 (2013.01); E02F 9/2235 (2013.01); E02F 9/2296 (2013.01); F02D 29/00 (2013.01); F02D 29/04 (2013.01); F02D 45/00 (2013.01); E02F 9/2292 (2013.01);
Abstract
A shovel includes a lower traveling body, an upper rotating body, an attachment including a boom and an arm, a controller, an engine, and a hydraulic pump that is driven by the engine and discharges hydraulic oil to drive the attachment. The controller is configured to obtain a hydraulic load applied to the attachment and calculate an engine speed command at predetermined time intervals based on the obtained hydraulic load.