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:
May. 11, 2010
Filed:
Jan. 20, 2006
Seiji Sakada, Fukuoka, JP;
Yousuke Yamashita, Fukuoka, JP;
Kouichi Takata, Fukuoka, JP;
Hayato Tsuji, Fukuoka, JP;
Syoubu Aramaki, Fukuoka, JP;
Seiji Sakada, Fukuoka, JP;
Yousuke Yamashita, Fukuoka, JP;
Kouichi Takata, Fukuoka, JP;
Hayato Tsuji, Fukuoka, JP;
Syoubu Aramaki, Fukuoka, JP;
Yanmar Co., Ltd., Osaka, JP;
Abstract
A lock device is improved in durability by operating the operation member of a boom lock device in a non-contact state to solve a problem in a conventional work machine because there is a problem that the operation member is worn at the lateral rotating part of a boom bracket. In the lock devicefor locking a boomof the excavating device to the main body, an engaging member is provided on one of the boom and a boom bracketprovided on the main body, and an engaged member is provided on the other of the boom and the boom bracket. The engaging member is constituted by a plate formed on one side thereof with a hook part, and on the other side thereof with a slot. A support pinis inserted into the slot, and a stoppedis disposed above the support pin, so that the support pinand the stoppersupport the engaging member.