Patent ID: 8029397
Filing Date: 2011-10-04
Classification: B62J,Y10T

Abstract:
1. A chainguard and a bicycle frame on which the chainguard is mounted comprising: a bicycle frame structure including a rear stay including a first portion and a second portion, with the second portion adapted for engaging with an axle of a rear wheel, with the first and second portions interconnected at a corner defining an obtuse angle and extended obliquely to each other, with the second portion including a first surface proximal to the rear wheel and a second surface opposed to the first surface and a third surface substantially transverse to and interconnecting the first and second surfaces, with the third surface defining a positioning portion; and a chainguard structure including a housing having a length, with the housing including an engaging portion extending substantially transversely to the length of the housing, and with the engaging portion mounted on the positioning portion; and means for securing the engaging portion on the positioning portion; wherein the positioning portion is substantially concave, and wherein the engaging portion includes a convex side lying on the positioning portion.