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:
Jan. 03, 2017
Filed:
Jul. 18, 2016
Hitachi Construction Machinery Co., Ltd., Bunkyo-ku, Tokyo, JP;
Daisuke Yamamoto, Koka, JP;
Yohei Iwamoto, Koka, JP;
Hiroshi Tabeta, Konan, JP;
Osamu Kokuryo, Koka, JP;
Junya Kawamoto, Moriyama, JP;
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Abstract
Disclosed is a construction machine that enables an operator to operate a vehicle width changing control lever while visually confirming positions of crawlers. The construction machine includes a lower track structurewhose left and right crawler track devicesA andB are adapted to change in spatial interval, and an upper swing structureswingably mounted above the lower track structure. The construction machine further includes a hydraulically actuated cylinder for changing vehicle width, disposed between the left and right crawler track devices, the vehicle width changing cylinder changing the interval between the left and right crawler track devices upon supply and discharge of a hydraulic fluid being controlled by a vehicle width changing control valve, and a vehicle width changing control leverdisposed on a left section of a swing body support structurerelative to an operator's seat, the vehicle width changing control lever operating the vehicle width changing control valve.