Patent ID: 7036393
Filing Date: 2006-05-02
Classification: F16H,Y10S,Y10T

Abstract:
1. A gear made of resin, comprising a substantially annular toothed portion formed at a radially outer location, a shaft-supporting portion formed at a radially inner location around a rotational center of said toothed portion, a web connecting said shaft-supporting portion and said toothed portion to each other, wherein at least two circumferential ribs are formed concentrically with the toothed portion and radially provided between said shaft-supporting portion and said toothed portion, a plurality of radially extending diametrical ribs are provided extending radially from an innermost side of a radially outermost of said at least two circumferential ribs toward said shaft supporting portion, said radially outermost of said at least two circumferential ribs being formed outside of an intermediate point in to radial direction which is between the rotational center of the gear and the outermost circumference of to gear, and the circumferential sectional shape of said web between said radially outermost of said at least two circumferential ribs and said toothed portion is a substantially corrugated shape.