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. 11, 2017
Filed:
Aug. 04, 2016
Applicant:
Sumitomo (S.h.i.) Construction Machinery Co., Ltd., Tokyo, JP;
Inventor:
Jitsutaka Takeo, Chiba, JP;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E02F 9/20 (2006.01); E02F 9/12 (2006.01); B60L 1/00 (2006.01); B60L 11/18 (2006.01); B60W 10/00 (2006.01); B60K 6/485 (2007.10); E02F 3/32 (2006.01); B60L 11/00 (2006.01);
U.S. Cl.
CPC ...
E02F 9/2091 (2013.01); B60K 6/485 (2013.01); B60L 1/003 (2013.01); B60L 11/1862 (2013.01); B60W 10/00 (2013.01); E02F 9/123 (2013.01); E02F 9/2075 (2013.01); E02F 9/2095 (2013.01); B60L 11/005 (2013.01); B60L 2200/40 (2013.01); B60L 2210/40 (2013.01); B60L 2240/527 (2013.01); B60L 2240/529 (2013.01); B60L 2240/545 (2013.01); B60L 2240/547 (2013.01); B60L 2240/549 (2013.01); E02F 3/32 (2013.01); Y02T 10/7005 (2013.01); Y02T 10/705 (2013.01); Y02T 10/7044 (2013.01); Y02T 10/7241 (2013.01); Y10S 903/903 (2013.01);
Abstract
A shovel according to an embodiment of the present invention includes an upper swivel body, an engine, a motor generator which can assist the engine, a capacitor, a swiveling electric motor which swivels the upper swivel body, a DC bus which is connected to the motor generator, the capacitor, and the swiveling electric motor, and a controller which controls charging and discharging of the capacitor. In a case where a swiveling operation is performed, the controller drives the swiveling electric motor by discharging power discharged by the capacitor, and thereafter, drives the swiveling electric motor by power generated by the motor generator.