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.

Date of Patent:
Nov. 09, 2010

Filed:

Jan. 23, 2006
Applicants:

Seiji Sakada, Chikugo, JP;

Makiko Tajima, Chikugo, JP;

Kouichi Takata, Chikugo, JP;

Yousuke Yamashita, Chikugo, JP;

Inventors:

Seiji Sakada, Chikugo, JP;

Makiko Tajima, Chikugo, JP;

Kouichi Takata, Chikugo, JP;

Yousuke Yamashita, Chikugo, JP;

Assignee:

Yanmar Co., Ltd., Osaka-shi, Osaka, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E02F 3/38 (2006.01);
U.S. Cl.
CPC ...
Abstract

A lift arm having a plate-like structure that is capable of taking a large load is realized without increasing a plate thickness and at low cost. The structure with required strength and of low cost is realized by a simple construction and achieves, at the same time, both weight lightening of a loader and sufficient load bearing performance. In a loader () of a working machine (), connection sections between a cross member () and lift arms () are each formed in a shape broadening from the cross member () toward a lift arm (). Further, reinforcement plates are attached to outer surfaces of a front loader () so as to overlap the connection sections between the cross member () and the lift arms (). Contact members () are attached to lower side faces at the heads of the lift arms () to restrict the amount of rotation of a working device installed on the heads of the lift arms ().


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