Abstract: An improved lightweight, durable collapsible scooter which is safe to operate and is easy and convenient to collapse, transport and store. The scooter has a steering assembly which is pivotally secured to the front portion of a frame assembly. A front wheel is rotably secured to the steering assembly and a rear wheel is rotably secured to the rear portion of the frame assembly. A hydraulic gas spring strut is pivotally secured at one end to the steering assembly and at the other end to the frame assembly. When extended, the collapsible strut releasably locks the steering assembly in an upright operating position for operation by a rider, and when the strut is in a compressed or collapsed position, it releasably locks the steering assembly in a position generally parallel to and adjacent to the frame assembly, for storing or transporting the scooter.

Abstract: An electric propulsion system for a bicycle includes one or two electric motors secured to a mounting assembly attached to the bicycle, a drive roller that impinges on the front wheel of the bike, a battery pack secured to the frame of the bicycle, and a motor controller device operated by the bicycle rider. The mounting assembly is secured to the bicycle steerer tube and includes a laterally extending pivot shaft that is generally parallel to the axle of the adjacent front wheel. A pair of pivot arms are secured to opposed ends of the pivot shaft. A pair of electric motors are disposed face-to-face with their shafts in coaxial alignment and joined by a drive roller. Lower ends of the pivot arms are secured to respective electric motors. A main brace extends between the motors and includes an upper end adjustably secured to the pivot arms, and the lower end is also joined the electric motors.