| 摘要 |
Solitary chainring for a bicycle front crank and drive chain, including a plurality of teeth formed thereabout. The plurality of teeth includes a first group of teeth and a second group of teeth alternating with the first group of teeth. Each tooth includes an outer face and an inner face which is opposite the outer face, and each tooth of the first group of teeth includes at least one first protrusion on the outer face or the inner face, and each tooth of the second group of teeth is formed without a first protrusion. The first protrusion is formed by a material deformation on one face of the teeth of the first group of teeth, wherein the material deformation is achieved from the inner face or the outer face, or it is formed by an application of material on one face of the teeth of the first group of teeth. |
| 主权项 |
1. A solitary chainring for a bicycle front crank for engaging a drive chain, comprising:
a plurality of teeth disposed on a circumference of the chainring, wherein the plurality of teeth has an even number of teeth; wherein the plurality of teeth comprises a first group of teeth and a second group of teeth disposed alternatingly between the first group of teeth, wherein the first group of teeth and the second group of teeth are equal in number, wherein each tooth of the first and second groups of teeth has an inner face and an outer face which is opposite the outer face, wherein each tooth of the first group of teeth has at least one first protrusion on one of the inner face and the outer face and each tooth of the second group of teeth is formed without first protrusions on the inner face and the outer face, wherein the first protrusion is formed by one of 1) a material deformation of one of the inner face and the outer face of the teeth of the first group of teeth, wherein the material deformation is achieved from the inner face or the outer face, and 2) an application of material on one of the inner face and the outer face of the teeth of the first group of teeth. |
