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:
Dec. 30, 2014
Filed:
Aug. 18, 2011
Shinya Imura, Toride, JP;
Seiji Ishida, Hitachinaka, JP;
Yusuke Kajita, Ushiku, JP;
Kazuo Fujishima, Tsuchiura, JP;
Takatoshi Ooki, Kasumigaura, JP;
Takako Satake, Ishioka, JP;
Shinya Imura, Toride, JP;
Seiji Ishida, Hitachinaka, JP;
Hidetoshi Satake, Ishioka, JP;
Yusuke Kajita, Ushiku, JP;
Kazuo Fujishima, Tsuchiura, JP;
Takatoshi Ooki, Kasumigaura, JP;
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Abstract
A hybrid construction machine is provided with a variable displacement hydraulic pumpwhich supplies hydraulic oil to a hydraulic actuator, an enginewhich is provided to be able to drive and rotate the hydraulic pump, an electric motorwhich is provided to be able to drive and rotate the hydraulic pump, an engine control dial, a controllerand an operating lever. The controller changes the rotation speed of the engineto reduce fuel consumption according to power generated by the engine, and changes displacement of the hydraulic pumpbased on the rotation speed of the engine, the dial position of the engine control dialand the amount of operation on the operating lever