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. 09, 1995
Filed:
Mar. 25, 1994
Masaru Furuyama, Tokyo, JP;
Yamakyu Chain Kabushiki Kaisha, Tokyo, JP;
Abstract
To provide a roller chain according to the present device pertaining to a bushed chain with an oil-impregnated sintered bushing fitted on a roller, which has an improved roller retaining power required during the sliding of the roller chain, and further requires no installation time and labor at the time of unlinking and linking of the roller chain, thereby preventing impairing or breaking each member. Pin diameter is increased to lower a bearing surface pressure to thereby improve wear resistance. Furthermore, the thickness of the sintered bushing axially supported on a pin is made nearly equal to that of the roller. According to the present device, the chain provided is a bushed chain with an oil-impregnated sintered bushing fitted on a roller, in which the working accuracy of the punched surface of a link plate has been improved, requiring no staking of a pin end face after installation.