Abstract: Two or three-wheeled vehicle which comprises a frame, a drive system connected to the frame and provided with a motor or a pedal system, and a handlebar mounted pivotally in the frame for at least one wheel provided with a hub, wherein the hub is connected to the handlebar via a steering arm extending along the steering wheel, wherein a drive shaft extending at least into the hub of the steering wheel is connected rotatably to a part of the frame extending roughly parallel to the steering arm, and a universal coupling part is arranged between the drive shaft and the hub of the wheel, wherein the drive shaft is connected drivably to the drive system in order to obtain a compact vehicle.

Abstract: A two-wheeled vehicle comprising a frame having two wheels suspended rotatably therein, whereof the one is driven and the other is steerable relative to the frame via a subframe, wherein the frame bears a saddle-like seat element in addition to a rotatable steering member, wherein the subframe for the steerable wheel is situated under the seat element and the driven wheel under the steering member and wherein a coupling mechanism is arranged between the steering member and the sub-frame, whereby due to the reversal of the wheel function it is possible to directly drive the front wheel whereby the distance between both wheels can be considerably reduced, and therewith the length of the bicycle, while preserving a comparatively large wheel diameter.