Patent ID: 7516971

Claim:
A bicycle frame comprising: a base frame having a down tube, a crank set housing with a central axis and at least one device which is mounted on the base frame, provided in the form of a brace structure and has an accommodating area for accommodating a wheel, and at least one brace of the brace structure is configured resilient such that the accommodating area is spring-mounted, wherein said at least one device is a rear body including a rear wheel receiver configured for receiving a rear wheel, and having on each side of said frame, associated with a corresponding side of the rear wheel, a pair of braces meeting at a dropout adjacent a rear wheel axle, wherein said rear body comprises at least one chain brace and at least one seat brace forming said dropout, wherein at least both said at least one seat brace and said at least one chain brace are configured resiliently such that said dropout is displaceable relative to said base frame, and wherein said at least one seat brace is upwardly arched and said at least one chain brace is downwardly arched relative to said dropout to enhance the application of tension by said at least one chain brace and said at least one seat brace, both said chain brace and said seat brace being connected to said down tube, and said chain brace disposed below said central axis.