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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.:

US 8948944 B1

PDFFull Text
Date of Patent:
Feb. 03, 2015

Filed:

Jan. 29, 2010

Hybrid-type construction machine

Applicant:

Koji Kawashima, Kanagawa, JP;

Inventor:

Koji Kawashima, Kanagawa, JP;

Assignees:

Sumitomo Heavy Industries, Ltd., Tokyo, JP;

Sumitomo (S.H.I.) Construction Machinery Co., Ltd., Tokyo, JP;

Attorney:

IPUSA, PLLC

Primary Examiner:

Behrang Badii

Int. Cl.
CPC ...
B60L 9/00 (2006.01); F02D 29/06 (2006.01); B60W 10/06 (2006.01); B60W 10/08 (2006.01); B60W 10/30 (2006.01); B60W 30/188 (2012.01); E02F 9/20 (2006.01); E02F 9/22 (2006.01); F02D 29/04 (2006.01); B60K 6/445 (2007.10); B60K 6/20 (2007.10); B60W 20/00 (2006.01); E02F 9/12 (2006.01);
U.S. Cl.
CPC ...
F02D 29/06 (2013.01); B60K 6/445 (2013.01); B60K 6/20 (2013.01); B60W 10/06 (2013.01); B60W 10/08 (2013.01); B60W 10/30 (2013.01); B60W 20/00 (2013.01); B60W 30/1884 (2013.01); B60W 30/1888 (2013.01); B60Y 2200/25 (2013.01); B60Y 2200/412 (2013.01); E02F 9/123 (2013.01); E02F 9/2075 (2013.01); E02F 9/2091 (2013.01); E02F 9/2246 (2013.01); F02D 29/04 (2013.01); Y02T 10/6286 (2013.01);
Abstract

A hybrid-type construction machine includes: an engine to drive a variable-volume-type hydraulic pump; a plurality of hydraulic actuators driven by a hydraulic pressure from the variable-volume-type hydraulic pump; and a motor generator driven by an electric power from an electric power accumulator to assist the engine. A maximum output of the variable-volume-type hydraulic pump is equal to or larger than a maximum output of the engine. When operating by setting an output of the variable-volume-type hydraulic pump larger than the maximum output of the engine, the engine is assisted by the motor generator.

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