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:
Jun. 26, 2018
Filed:
Oct. 15, 2013
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Takako Satake, Ishioka, JP;
Shinji Nishikawa, Kasumigaura, JP;
Hidetoshi Satake, Ishioka, JP;
Shinya Imura, Toride, JP;
Shiho Izumi, Hitachinaka, JP;
Kouji Ishikawa, Kasumigaura, JP;
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Abstract
A construction machine includes: a swing structure (); a hydraulic pump (); a hydraulic motor () for driving the swing structure () using hydraulic fluid from the hydraulic pump (); an electric motor () for driving the swing structure () with or without the aid of the hydraulic motor (); and a hydraulic actuator () driven by the hydraulic fluid from the hydraulic pump, the hydraulic actuator can be operated together with the swing structure (). When the swing structure () is operated together with the hydraulic actuator (), only the electric motor () is used to swing the swing structure ().