Patent ID: 6591708
Filing Date: 2003-07-15
Classification: B29C,B29L,F16H,Y10S,Y10T

Abstract:
A gear made of fiber reinforced resin, comprising:a metal bushing; a gear body made of resin and arranged on an outside of said metal bushing; said gear body including a resin molded member integrally made of a material containing thermosetting resin as a part thereof and formed on an outer periphery thereof with a plurality of teeth; said resin molded member being formed by cast molding while using at least one reinforcing fiber substrate formed into a ring-like shape as a core thereof; said reinforcing fiber substrate being constituted by a fabric selected from the group consisting of a knitted fabric of a union yarn made of a para-type aramid fiber and an organic fiber reduced in strength as compared with said para-type aramid fiber and a woven fabric thereof; said reinforcing fiber substrate having a volume percentage of 65% by volume or less based on a volume of said resin molded member; said para-type aramid fiber having a mass percentage of 30% to 60% by weight based on a mass of said union yarn.