Patent ID: 6659487
Filing Date: 2003-12-09
Classification: B62K

Abstract:
A bicycle frame comprising:a top bar assembly having a front end and a rear end, the top bar assembly having a front, a middle, and a rear section; a lower bar assembly having a forward end connected to the front end of the top bar assembly and extending downwardly and rearwardly from the front end of the top bar assembly, the lower bar assembly having a rearward end opposite the forward end; a seat bar assembly mounted on the rearward end of the top bar assembly and extending downwardly from the top bar assembly toward the rearward end of the lower bar assembly; shock reducing means for reducing the amount of force transferred from a riding surface to a user through the frame when the bicycle encounters rough riding surfaces; and a plurality of joint assemblies mounted on the frame for permitting extending and reducing of the distance between the ends of the top bar assembly, wherein each of the joint assemblies comprises a first portion and a second portion, and connecting means for removably connecting the first and second portions together, the connecting means comprising: a plurality of alternating tenons and mortises formed on the first portion and a plurality of alternating tenons and mortises formed on the second portion; wherein the mortises of the second portion are slidably insertable into the tenons of the first portion and the mortises of the first portion being slidably insertable into the tenons of the second portion.