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:
Oct. 04, 2005
Filed:
Feb. 13, 2002
Hideki Akita, Tsuchiura, JP;
Yoshiaki Sekiguchi, Yasato-machi, JP;
Hideki Akita, Tsuchiura, JP;
Yoshiaki Sekiguchi, Yasato-machi, JP;
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Abstract
A seal () is constituted by an outer lip portion () to be held in abutting engagement with an outer link portion () of a crawler belt (), an inner lip portion () to be held in abutting engagement with a bush (), and an interconnecting bridge portion () bridged and connected between the outer and inner lip portions (). The outer lip portion () on the side of track link, the inner lip portion () on the side of bush, and outer bridge portion (A) and inner bridge portion (B) of the interconnecting bridge portion () are formed in thicknesses (T, T, T' and T′), respectively, which are in the relations of (TT′>T≈T′). A maximum outside diameter portion (C) of the interconnecting bridge portion () is located radially outward of a median point between inner and outer peripheral ends of the lip portion () on the side of bush. The inner lip portion () as a whole is uniformly pressed against an end face (A) of the bush () by the interconnecting bridge portion ().