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:
Apr. 25, 2023
Filed:
Apr. 27, 2020
Applicant:
Sumitomo Construction Machinery Co., Ltd., Tokyo, JP;
Inventor:
Takashi Yamamoto, Chiba, JP;
Assignee:
SUMITOMO CONSTRUCTION MACHINERY CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E02F 3/43 (2006.01); E02F 3/32 (2006.01); E02F 9/20 (2006.01); E02F 9/22 (2006.01); E02F 9/26 (2006.01);
U.S. Cl.
CPC ...
E02F 3/435 (2013.01); E02F 3/32 (2013.01); E02F 3/439 (2013.01); E02F 9/2033 (2013.01); E02F 9/2041 (2013.01); E02F 9/2203 (2013.01); E02F 9/2228 (2013.01); E02F 9/26 (2013.01);
Abstract
An excavator may perform a finishing operation to prepare a slope while maintaining workability. The excavator includes an undercarriage, a slewing upper structure rotatably mounted on the undercarriage, a boom pivotally mounted on the upper structure, an arm rotatably mounted on a tip end of the boom, a bucket mounted on a tip end of the arm, and a controller. The controller restricts a lowering operation of the boom, so that at least one of a pressing force of the bucket against the ground and a speed of lowering the bucket toward the ground does not become relatively large.