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:
Apr. 30, 2013
Filed:
Nov. 17, 2010
Tetsuya Morimoto, Nomi, JP;
Tetsuya Morimoto, Nomi, JP;
Komatsu Ltd., Tokyo, JP;
Abstract
A power transmission device includes a first planetary gear reducer, a second planetary gear reducer and a hydraulic clutch mechanism. The first planetary gear reducer includes: a first sun gear receiving torque inputted thereto; a first carrier supporting plural first planet gears; and a first ring gear coupled to a wheel. The second planetary gear reducer includes: a second sun gear coupled to the first carrier; a second carrier, coupled to the hydraulic clutch mechanism while supporting plural second planet gears; and a second ring gear coupled to the first ring gear and the wheel. The hydraulic clutch mechanism includes a rotary part coupled to the second carrier and a stationary part configured to be coupled/decoupled to/from the rotary part.