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. 21, 2002
Filed:
Jul. 14, 2000
Wataru Idetsu, Chiyoda-machi, JP;
Genroku Sugiyama, Miho-mura, JP;
Yoshiaki Sekiguchi, Yasato-machi, JP;
Kazuyoshi Hatano, Minori-machi, JP;
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Abstract
The present invention concerns a crawler belt ( ) incorporating a sealing devices ( ), which are each constituted by a coned disc spring ( ) and a seal ring ( ), to seal up gap spaces between track links ( ) and bushes ( ). A seal anchor hole ( ) is provided in each one of outer link portions ( ) of track links ( ) of the crawler belt ( ), and the sealing device ( ) is fitted in the seal anchor hole ( ) between an outer link portion ( ) and an opposing end face ( A) of a bush ( ). The sealing device ( ) includes the seal ring ( ) in the shape of an O-ring, and the coned disc spring ( ) which is arranged to press the seal ring ( ) resiliently against peripheral wall surface ( B) of the seal anchor hole ( ) and the end face ( A) of the bush ( ).