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:
Aug. 09, 2005
Filed:
Mar. 22, 2001
Teiji Yamamoto, Osaka, JP;
Akira Hashimoto, Osaka, JP;
Hiroyuki Nakaishi, Osaka, JP;
Komatsu Ltd., Tokyo, JP;
Abstract
An link of a caterpillar which is allowed to maintain stabilized durability for a long period. The fixing structure has a link, and a pin inserted into a pin inserting bore formed in the link. A peripherally extending concave groove formed on the end portion of the pin and an opening periphery conjugate to forms an annular space. In order to limit relative escaping motion of the pin in the off-opening side (toward receding direction), a escape limiting ring is fitted into the annular space. The hardness of the bottom surface of the peripherally extending concave groove is lowered than the surface hardness of a link engaging portion of the pin.