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. 22, 2014
Filed:
Feb. 26, 2010
Tsuyoshi Yoshida, Hirakata, JP;
Shinji Mitsuta, Hiratsuka, JP;
Shinya Nakamura, Hiratsuka, JP;
Souichi Tsumura, Hirakata, JP;
Tetsunori Yamashita, Hirakata, JP;
Tsuyoshi Yoshida, Hirakata, JP;
Shinji Mitsuta, Hiratsuka, JP;
Shinya Nakamura, Hiratsuka, JP;
Souichi Tsumura, Hirakata, JP;
Tetsunori Yamashita, Hirakata, JP;
Komatsu Ltd., Tokyo, JP;
Abstract
There is provided a running device for track-laying vehicle, which can resolve a feeling of fear of falling height in a leading end portion of a crawler while relax a large impact when the crawler runs over a raised contact area. The running device includes a spring constant equalizing unit that equalizes an apparent spring constant of a second arm of lower track roller bogie device over a total length. The apparent spring constant is generated in maximum reverse camber of the crawler. The spring constant equalizing unit increases an oscillation angle α of the second arm that can abut on the first arm in the maximum reverse camber of the crawler such that the oscillation angle α of the second arm is larger than a crossing angle β of the connecting link. Desirably the increased maximum oscillation angle of the second arm is 1.3-2.0 times the crossing angle β.