Patent ID: 9493211
Filing Date: 2016-11-15
CPC Classification: B62M,F16H,Y10T

Claim Text:
1. A bicycle chainring for engagement with a drive chain, comprising: a plurality of teeth extending from a periphery of the chainring wherein roots of the plurality of teeth are disposed adjacent the periphery of the chainring; the plurality of teeth including a first group of teeth and a second group of teeth, each of the first group of teeth wider than each of the second group of teeth, each of the plurality of teeth includes an outboard side and an inboard side opposite the outboard side and each of the first group of teeth includes at least a first protrusion on one of the outboard side and the inboard side and each of the second group of teeth are free of the first protrusion; at least some of the second group of teeth arranged alternatingly and adjacently between the first group of teeth; and at least some of the first and second group of teeth being asymmetric about a radial tooth centerline along the direction of the chainring circumference, wherein the first protrusion is asymmetrically disposed on a side of the first group of teeth along the direction of the chainring circumference.