Abstract: A vehicle with a pedal drive, such as a bicycle, tricycle or moped, includes a frame. A pedal drive is rotatably mounted on the frame and includes a driving gear. A wheel is rotatably mounted on the frame and a driven gear is jointly rotatable with the wheel and includes driven gear teeth. An endless toothed belt is trained about and interconnects the driving and driven gears and includes transmission gear teeth. The driven gear teeth of the driven gear are slightly reduced with respect to driven gear teeth which would correspond to the transmission gear teeth of the endless toothed belt.

Abstract: In a bicycle frame including a plurality of tubes, at least one sleeve coupling connecting two of these tubes together, a separate pipe socket fastened within the sleeve coupling so as to project therefrom, with one of the two tubes being fitted around the pipe socket to contact the exterior surface of the pipe socket, and a layer of a metal adhesive or the like disposed between, and connecting together, the interior surface of the one tube and the exterior surface of the pipe socket, the exterior surface of the pipe socket is mechanically roughened.

Abstract: In a bicycle frame including a plurality of tubes, at least one sleeve coupling connecting two of these tubes together, a separate pipe socket fastened within the sleeve coupling so as to project therefrom, with one of the two tubes being fitted around the pipe socket to contact the exterior surface of the pipe socket, and a layer of a metal adhesive or the like disposed between, and connecting together, the interior surface of the one tube and the exterior surface of the pipe socket, the exterior surface of the pipe socket is mechanically roughened.