Abstract: A folding collapsible kick scooter includes a head tube folding structure, which uses a quick-release lock to lock the head tube between an extended position and a collapsed position, and a handlebar folding structure, which uses a quick-release lock to lock the left handlebar and the right handlebar between an extended position and a collapsed position.

Abstract: A folding collapsible kick scooter includes a footplate, a head tube collapsibly coupled to the front side of the footplate by a joint and lock unit, a stem moved in and out of the head tube and releasably locked in position by a quick-release lock, a handlebar connector mounted on the top end of the stem to hold two handlebars, a press control lock installed in the handlebar connector and adapted to lock the handlebars between two positions, a front wheel holder fixedly fastened to the bottom end of the head tube and holding a front wheel on a front suspension arm thereof, a rear wheel holder fixedly fastened to the rear side of the footplate and holding a rear wheel on a rear suspension arm thereof, and a rear fender pivoted to the rear wheel holder and supported on spring means and served as a foot brake for stopping the rear wheel from rotation.

Abstract: An in-line roller skate having an improved sole plate structure includes a boot with an outer sole provided with a plurality of downwardly extending projections. Each projection is provided with a vertically oriented, elongated slot for receiving a bushing of an elastic plastic material for absorbing shock, and at least two pairs of mounting plates for clamping rollers between each pair pivotally-mounted to the corresponding projections. Each pair of mounting pairs secures two rollers at either end thereof. The mounting plates are arranged to be pairs of two and each pair of mounting plates is independently mounted to the projections of the boot. The in-line roller skate has good floor or ground adaptability and shock-absorbing effects.