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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.:

US 10060096 B1

PDFFull Text
Date of Patent:
Aug. 28, 2018

Filed:

Aug. 04, 2016

Shovel

Applicant:

Sumitomo (S.h.i.) Construction Machinery Co., Ltd., Tokyo, JP;

Inventor:

Jitsutaka Takeo, Chiba, JP;

Assignee:

SUMITOMO (S.H.I.) CONSTRUCTION MACHINERY CO., LTD., Tokyo, JP;

Attorney:

Fenwick & West LLP

Primary Examiner:

Jeffrey J Restifo

Int. Cl.
CPC ...
E02F 9/02 (2006.01); E02F 9/20 (2006.01); B60K 6/485 (2007.10); B60K 6/54 (2007.10); B60W 10/26 (2006.01); B60W 20/00 (2016.01); E02F 9/12 (2006.01); B60L 1/00 (2006.01); B60L 7/14 (2006.01); B60L 11/00 (2006.01); B60L 11/18 (2006.01); E02F 3/32 (2006.01); H02J 7/14 (2006.01); E02F 9/22 (2006.01);
U.S. Cl.
CPC ...
E02F 9/2095 (2013.01); B60K 6/485 (2013.01); B60K 6/54 (2013.01); B60L 1/003 (2013.01); B60L 7/14 (2013.01); B60L 11/005 (2013.01); B60L 11/1862 (2013.01); B60L 11/1875 (2013.01); B60W 10/26 (2013.01); B60W 20/00 (2013.01); E02F 3/32 (2013.01); E02F 9/123 (2013.01); E02F 9/2091 (2013.01); H02J 7/14 (2013.01); B60L 2200/40 (2013.01); B60L 2210/12 (2013.01); B60L 2210/14 (2013.01); B60L 2240/36 (2013.01); B60L 2240/545 (2013.01); B60L 2240/547 (2013.01); E02F 9/2075 (2013.01); E02F 9/2296 (2013.01); Y02T 10/705 (2013.01); Y02T 10/7005 (2013.01); Y02T 10/7022 (2013.01); Y02T 10/7044 (2013.01); Y02T 10/7225 (2013.01); Y02T 10/7233 (2013.01); Y10S 903/903 (2013.01);
Abstract

A shovel according to embodiments of the present invention includes a lower travelling body, an upper swivel body, an operation attachment, an engine, a motor generator which is connected to the engine, a hydraulic pump which is connected to the motor generator and supplies hydraulic oil to the operation attachment, a swiveling electric motor which is mounted on the upper swivel body, a power storage device, a DC bus which electrically connects the power storage device and the swiveling electric motor to each other, and a control device, in which the control device decreases a charging/discharging limit value of the power storage device and changes a discharging requirement value which is the maximum value of power which is supplied from the power storage device to the swiveling electric motor, according to a decrease of temperature.

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