Abstract: A personal mobility vehicle having a low center of gravity and compact overall size which facilitates travel in narrow hallways and in negotiating sharp turns both indoors and out of doors on smooth and uneven surfaces. The vehicle includes a generally horizontally disposed frame supported in close proximity above the ground by a pair of side-by-side spaced steerable rear wheels and two spaced motor-driven front wheels. A battery arrangement is connected to and supported by the frame and operably connected between a control lever in electrical communication with an electronic circuit and the motors for propelling the front wheels through a transaxle arrangement and for steering the rear wheel. By the side-by-side spaced rear wheel arrangement, steering angles of up to about 90.degree. are achieved without stalling propulsion. A seat is provided whereby a user's feet may be comfortably supported on the frame or separate removable or fixed foot rests.

Abstract: A self-propelled personal mobility vehicle and frame therefor and method of assembly of the dismantled vehicle. The frame includes a front support for a steerable wheel and a coupling member connected to a rear portion of the frame which is releasibly engagable with a drive assembly operably positioned immediately rearward of the frame. The drive assembly includes a centrally positioned drive gear housing having a transversely extending tubular drive shaft housing and spaced rear support wheels operably connected at each end of the drive shaft housing for supporting and propelling the vehicle. The coupling member is releasibly engaged over the drive shaft housing by first lifting the rear of the frame with the drive assembly resting on the ground. The frame is then moved diagonally rearwardly or toward the drive assembly and downwardly so that, when fully engaged over and upon the drive shaft housing, the coupling member, by frame and vehicle weight alone, prevents further lateral and fore and aft (e.g.

Abstract: A personal mobility vehicle having a very low center of gravity and compact overall size which facilitates travel in narrow hallways and in negotiating sharp turns both indoors and out of doors on smooth and uneven surfaces. The vehicle includes a generally horizontally disposed frame supported in close proximity above the ground by a steerable, motor-driven rear wheel and two spaced front wheels. A battery arrangement is connected to and supported by the frame and operably connected between a control lever in electrical communication with an electronic circuit and the motors for propelling and steering the rear wheel. A seat is provided whereby a user's feet may be comfortably supported on the frame. An arcuate cushioning ring connected and extending radially from the perimeter of the frame fixed objects such as walls, doorways and the like to facilitate tight maneuvers.

Abstract: A personal mobility vehicle having a very low center of gravity and compact overall size which facilitates travel in narrow hallways and in negotiating sharp turns as into a doorway along a narrow hall. The vehicle includes a generally horizontally disposed preferably circular, disc-shaped frame supported in close proximity above the ground by a steerable, motor-driven rear wheel and two spaced front wheels. A battery arrangement is connected to and supported by the frame and operably connected between a control lever in electrical communication with an electronic circuit and the motors for propelling and steering the rear wheel. A seat is provided whereby a user's feet may be comfortably supported on the frame. A circular cushioning ring, either fixed or preferably rotatably mounted and extending radially from the perimeter of the frame, contacts fixed objects such as walls, doorways and the like to facilitate tight maneuvers not heretofore possible with other such vehicles.