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. 23, 2015
Filed:
Apr. 05, 2012
Kazushige Koiwai, Hiroshima, JP;
Mitsunori Hirozawa, Hiroshima, JP;
Yoichiro Yamazaki, Hiroshima, JP;
Kazushige Koiwai, Hiroshima, JP;
Mitsunori Hirozawa, Hiroshima, JP;
Yoichiro Yamazaki, Hiroshima, JP;
KOBELCO CONSTRUCTION MACHINERY CO., LTD., Hiroshima-shi, JP;
Abstract
The axial lengths of coupling portions of a flywheel, a rotor shaft, and a pump shaft are reduced to reduce the axial length of an entire power unit. A crankshaftand a flywheelare directly coupled to each other and the flywheeland a rotor shaftare directly coupled to each other. A couplingis directly coupled to an end face of the rotor shafton the opposite side to the flywheel. A pump shaftis connected to the coupling. Coupling surfaces of the flywheeland the rotor shaftand coupling surfaces the rotor shaftand the couplingare arranged within a width range of a coil