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:
Mar. 08, 2005
Filed:
Jul. 27, 2001
Takahiro Niwa, Nagoya, JP;
Hideki Iwata, Nagoya, JP;
Nobutaka Hiramatsu, Nagoya, JP;
Takayuki Shibayama, Nagoya, JP;
Takahiro Niwa, Nagoya, JP;
Hideki Iwata, Nagoya, JP;
Nobutaka Hiramatsu, Nagoya, JP;
Takayuki Shibayama, Nagoya, JP;
Daido Metal Company Ltd., Nagoya, JP;
Abstract
Bushcomprises back metal layermade from a steel plate and porous sintered metal layermade from copper, provided on the surface of back metal layerthrough copper plating layerand impregnated and coated with sliding materialwithin and on the surface of porous sintered metal layer, where sliding materialcomprises PTFE as the main component (not less than 50 vol. % of the entire material), 3-40 vol. % of Bi particles and/or Bi alloy particles, 1-40 vol. % of injection moldable fluororesin such as PFA, etc., 0.1-20 vol. % of hard particles such a W, AlO, etc., and 0.1-20 vol. % of a solid lubricant such as graphite, etc. The sliding material based on PTFE as the main component is free from lead and can further improve the wear resistance, while maintaining good sliding characteristics.