Chainguard and bicycle frame
OwnerLouis Chuanginventor
Life of this patent
Estimating the term…
Abstract
A chainguard for use on a bicycle includes a housing having a connecting portion and an engaging portion. The connecting portion and the engaging portion are connected to a seat tube and a rear stay of a bicycle frame in the bicycle. Additionally, the rear stay includes a first portion and a second portion adapted for engaging with an axle of a rear wheel, and the first and second portions are interconnected at a corner. Additionally, the second portion includes a first surface, a second surface and a third surface substantially transverse to and interconnecting the first and second surfaces. Further, the third surface defines a positioning portion on which the engaging portion of the chainguard is mounted.
Claims17
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.
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 convex, and wherein the engaging portion includes a concave side lying on the positioning portion.
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 planar, wherein the engaging portion includes a planar side lying on the positioning portion, wherein the positioning portion includes a retaining portion and a space delimited within the retaining portion, and wherein the retaining portion is in the form of a ridge.
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 housing includes a front section and a rear section adjustably mounted to the front section such that the housing has a variable overall length.
Dependencies are inferred from the claim text.