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:
Feb. 03, 2004
Filed:
May. 01, 2002
Applicant:
Inventors:
Assignee:
Tsubakimoto Chain Co., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16G 1/302 ;
U.S. Cl.
CPC ...
F16G 1/302 ;
Abstract
In a roller chain in which a plurality of rolling bodies is disposed between a roller and a bushing, between a bushing and a pin, or between a roller and a pin, the rolling bodies include at least one carbon-impregnated ceramic rolling body, or at least one carbon-coated steel rolling body. Preferably, the carbon-impregnated or carbon-coated rolling bodies are disposed in an alternating configuration with steel rolling bodies.