Abstract: A multi-function carrier includes a bottom plate bilaterally connected to pivotable lateral plates, wherein each of the lateral plates may be a one-piece grid or a two-piece folding grid, a pivotable rear plate, and a pivotable front plate. The front plate has sliding blocks for being slidably mounted on horizontal sliding guides of the bottom plate. The two lateral plates, the front plate and the rear plate, when posed vertically, are mutually coupled and jointly form a top-opened basket-like structure together with the bottom plate. When the two lateral plates and the front plate are laid over the bottom plate, the multi-function carrier provides a rack-like structure. The multi-function carrier further has an extendable gripper which is movably attached to the front plate and has a movable pressing member.

Abstract: A multi-function carrier includes a bottom plate bilaterally connected to pivotable lateral plates, wherein each of the lateral plates may be a one-piece grid or a two-piece folding grid, a pivotable rear plate, and a pivotable front plate. The front plate has sliding blocks for being slidably mounted on horizontal sliding guides of the bottom plate. The two lateral plates, the front plate and the rear plate, when posed vertically, are mutually coupled and jointly form a top-opened basket-like structure together with the bottom plate. When the two lateral plates and the front plate are laid over the bottom plate, the multi-function carrier provides a rack-like structure. The multi-function carrier further has an extendable gripper which is movably attached to the front plate and has a movable pressing member.

Abstract: A transmission neutralizing structure for a pedal-powered vehicle is disclosed. The transmission neutralizing structure is provided on one of sprocket sets of the vehicle, and includes a free gear and a bearing by which a center of the free gear is coupled with a rotatory assembly so that the rotatory assembly and the free gear are rotationally disconnected in both directions. The pedal-powered vehicle has a chain shiftable between the sprocket set and the free gear under control of a derailleur gear unit. When the derailleur gear unit is set in a neutral gear position, the chain is engaged with the free gear. The free gear further has a safety device, which kinetically couples the free gear with the sprocket set.

Abstract: A foldable bicycle that comprises a folding segment provided on the frame thereof, whereupon the bicycle can be folded in the manner that a front wheel is settled at the side of a back wheel of the bicycle. The bicycle further comprise an auxiliary wheel deposited on the frame in front of the folding segment so that when the bicycle is folded, the auxiliary wheel, the front wheel and back wheel of the bicycle can function as three supporting points that are arranged in a triangular form on a plane.

Abstract: A foldable bicycle includes a frame. A first foldable device is connected to a top tube of the frame so as to fold a front wheel together with a head tube and a handlebar backward at the first foldable device such that the front and rear wheels are located parallel with each other. At least one assistant wheel is connected to a lower end of a down tube so that the at least one assistant wheel cooperates with the front and rear wheels to form a stable triangle support arrangement and the foldable bicycle can be easily moved by the at least one assistant wheel cooperating with the front and rear wheels. A carry rack is located above the rear wheel, which can be positioned by engaging pivot rods of the carry rack with engaging members on two support rods connected to a hub of the front wheel.