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:
May. 29, 2018
Filed:
Apr. 03, 2015
Sumitomo(s.h.i.) Construction Machinery Co., Ltd., Tokyo, JP;
Sumitomo Heavy Industries, Ltd., Tokyo, JP;
Jitsutaka Takeo, Chiba, JP;
Makoto Yanagisawa, Chiba, JP;
SUMITOMO(S.H.I.) CONSTRUCTION MACHINERY CO., LTD., Tokyo, JP;
SUMITOMO HEAVY INDUSTRIES, LTD., Tokyo, JP;
Abstract
A shovel includes an electrical power storage device that may be made of a plurality of electrical power storage cells for charging electricity generated by a generator; and an electrical power storage administration part that includes equalizing circuits each of which may be connected to corresponding one of the plurality of electrical power storage cells, an equalizing circuit defect determination part which determines whether a defect exists in the equalizing circuit, and a shutoff part which shuts off a connection between the equalizing circuit in which the defect may be determined to exist and the electrical power storage cell connected to the equalizing circuit.