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, 2006
Filed:
Jul. 07, 2004
Akira Fujiki, Yokohama, JP;
Yukihiro Maekawa, Yokohama, JP;
Yutaka Mabuchi, Yokohama, JP;
Takashi Murata, Yokohama, JP;
Takashi Suzuki, Matsudo, JP;
Jyun-ichi Yamada, Matsudo, JP;
Tadayuki Tsutsui, Matsudo, JP;
Kei Ishii, Matsudo, JP;
Akira Fujiki, Yokohama, JP;
Yukihiro Maekawa, Yokohama, JP;
Yutaka Mabuchi, Yokohama, JP;
Takashi Murata, Yokohama, JP;
Takashi Suzuki, Matsudo, JP;
Jyun-ichi Yamada, Matsudo, JP;
Tadayuki Tsutsui, Matsudo, JP;
Kei Ishii, Matsudo, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Hitachi Powdered Metals Co., Ltd., Matsudo, JP;
Abstract
A sintered sprocket has a high overall density and excellent contact pressure resistance. The sprocket is produced from a sintered alloy selected from the following alloys ((1) to (3)), is densified to have a relative density of 95% or higher in the surface layer of the gear teeth by forming by rolling, having a surface hardness of 700 HV or higher, and is useful for a crankshaft, a cam shaft, a balancer shaft, or a water pump shaft of an internal combustion engine: