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:
Jan. 21, 2014
Filed:
May. 24, 2011
Akira Noguchi, Koka, JP;
Masayuki Yunoue, Koka, JP;
Akira Noguchi, Koka, JP;
Masayuki Yunoue, Koka, JP;
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Abstract
The object of the present invention is to provide an electric construction machine capable of efficiently cooling the battery mounted on the swing structure. To achieve the object, there is provided an electric construction machine in which a battery storage roomis formed in the swing structureand a plurality of batteriesas electric power sources are arranged in the battery storage room, comprising: a battery storage structurestoring the batteriesand having an air flow channel through which air can flow upward from a lower part of the battery storage structure; a covering sheetentirely covering the top and side faces of the battery storage structure; and a ductfor discharging the air, one end of which is arranged in an upper part of the covering sheet