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:
Mar. 31, 2015
Filed:
Nov. 17, 2011
Kenichi Terauchi, Hiroshima, JP;
Masatsugu Hamasaki, Hiroshima, JP;
Kenichi Terauchi, Hiroshima, JP;
Masatsugu Hamasaki, Hiroshima, JP;
Kobelco Construction Machinery Co., Ltd., Hiroshima-shi, JP;
Abstract
A drive apparatus for a construction machine includes: a motor having a motor shaft; a speed reducer unit having a speed reducer output shaft and a casing and reducing speed of rotation force of the motor, and transmitting the force to an upper slewing body; and a cooler formed with a coolant path through which liquid or gas for cooling lubricating oil inside the casing passes as a cooling medium, wherein the motor and the speed reducer unit are provided in a row in an apparatus-axis direction such that the motor shaft and the speed reducer output shaft are arranged along the same line, and the cooler is provided in a row with the speed reducer unit in the apparatus-axis direction in a state where at least a part of the cooler is immersed in the lubricating oil, so as to enable heat exchange with the lubricating oil.