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. 14, 2015
Filed:
Jul. 21, 2011
Shinya Okumura, Tsuchiura, JP;
Mitsugu Ojima, Tsuchiura, JP;
Yasunori Ota, Tsuchiura, JP;
Toshihiko Ishida, Tsuchiura, JP;
Takenori Hiroki, Tsuchiura, JP;
Shinya Okumura, Tsuchiura, JP;
Mitsugu Ojima, Tsuchiura, JP;
Yasunori Ota, Tsuchiura, JP;
Toshihiko Ishida, Tsuchiura, JP;
Takenori Hiroki, Tsuchiura, JP;
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Abstract
An electric work vehicle is provided in which the length of a high-tension cable connecting an electric motor included in a slewing motor with an inverter for controlling the electric motor can be set to be comparatively short. A region on a main frame is divided into three regions consisting of a center region, a first side region, and a second side region, via a first vertical rib and a second vertical rib. A slewing hydraulic motor and a slew assist electric motor, which constitute the slewing motor, are disposed in the center region, and an inverter for controlling the slew assist electric motor is disposed in a position near the second vertical rib in a second tool chamber provided in the second side region.