Sprocket for a silent chain and method of manufacturing the same 

Patent No. 7,097,580

Issued: August 29, 2006
Filed: October 21, 2003
Priority: Oct 25, 2002 [Japan]

Inventors: Sakamoto; Naoji (Nabari, JP)
Assignee: BorgWarner Morse TEC Japan K.K. (Mie, JP) 

A sprocket for preventing the partial wear on the teeth of the sprocket. The teeth of the sprocket comprised of a pair of side portions located on opposite sides of a tooth and a central portion located between the pair of sides. The pair of side portions has a hardness greater than the central portion.

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