The present invention relates to a novel robot drive train that is robust, and low cost. The drive train is capable of ascending obstacles greater than the height of its wheels, protects the robot against shocks/vibration, and is highly maneuverable, such as able to execute a zero-point turn. To control the bogie in a variety of scenarios, a novel mechanism is used to selectively limit the articulation range of the bogie and/or programmatically apply a preload to the bogie axle.

An electric kart has a frame, a seat, four wheels, an electric motor operatively connected to two of the wheels, and at least one battery operatively connected to the electric motor. The at least one battery has a support structure mounted to the frame of the electric kart, and battery cells positioned on the support structure such that there is at least one air passage defined between the battery cells. Air passes through the at least one air passage when the electric kart is in motion to cool at least some of the battery cells. A battery for an electric kart is also disclosed.

A drive assembly for a kart, and a kart including the assembly is disclosed. The assembly includes an electric motor including an output shaft; an assembly housing surrounding the motor, the housing defining an aperture; an intermediate shaft rotatably disposed within the assembly housing; a driving gear removably disposed on the output shaft within the housing; a reduction gear removably disposed on the intermediate shaft within the housing; and a panel removably connected to the housing for selectively covering the aperture, the driving gear and the reduction gear being removable from the motor and the housing via the aperture when the panel is removed from the housing, the panel, the driving gear, and the reduction gear being disposed above a maximum level of transmission oil contained within the housing when the motor is not operating. A method of changing a kart transmission ratio is also disclosed.

A front suspension lift kit for a golf cart includes first and second beams mountable to a frame of the golf cart. A first strut is mountable to the frame of the golf cart and a distal end portion of the first beam such that the first strut extends between the frame of the golf cart and the first beam. A second strut is mountable to the frame of the golf cart and a distal portion of the second beam such that the second strut extends between the frame of the golf cart and the second beam. A support bracket is mountable to the first and second beams at the distal end portions of the first and second beams. The lift kit also includes a swing arm, a spindle bracket, and a coil-over shock.

A utility cart includes a suspension having an integral perch bracket having a plurality of legs structured to straddle an axle of the utility cart, and can include an opening into which a spring pin (e.g. a pin of a leaf spring) can be inserted. The perch bracket can alternatively include a brake cable attachment feature located on an end of the bracket. In one form the end can extend from one leg and be folded toward an opposing leg. The perch bracket can be cut from sheet stock of material, and stamped into final or near final form. In one embodiment a threaded nut can be attached to the legs of the perch bracket.

The disclosure relates to a wheel suspension of a device having an electrical drive of a wheel for supporting a manual movement impulse. The wheel suspension includes a connector piece movably or bendably arranged between a support element or support frame connected to the device and between an interior stator of an electrical drive, wherein the connector piece is held in a starting position due to the gravity of the device, without other influencing forces. The wheel suspension also includes at least one sensor that detects a deflection of the connector piece, and a control device designed such that the control device together with the electrical drive counteracts a deflection or bending of the connector piece.

A spring suspension includes a support assembly, two shock absorbing columns, two shock absorbing springs, two suspension rocker arms, two connectors and two connecting rods. The two shock absorbing columns are arranged on the support assembly symmetrically. The two suspension rocker arms are arranged on two ends of the support assembly in an opposing manner. Each shock absorbing spring sleeves the corresponding shock absorbing column which is also movably connected to the corresponding connector. Each of the connectors and the corresponding connecting rod are coaxially arranged on a cart body, and an articulation point between the connector and the connecting rod is located between the two shock absorbing columns. Each of the connecting rods is movably connected to the corresponding suspension rocker arm. The spring suspension of the utility model has a simple structure and is capable of improving the off-road performance of a golf cart.

A drive assembly for a kart, and a kart including the assembly is disclosed. The assembly includes an electric motor including an output shaft; an assembly housing surrounding the motor, the housing defining an aperture; an intermediate shaft rotatably disposed within the assembly housing; a driving gear removably disposed on the output shaft within the housing; a reduction gear removably disposed on the intermediate shaft within the housing; and a panel removably connected to the housing for selectively covering the aperture, the driving gear and the reduction gear being removable from the motor and the housing via the aperture when the panel is removed from the housing, the panel, the driving gear, and the reduction gear being disposed above a maximum level of transmission oil contained within the housing when the motor is not operating. A method of changing a kart transmission ratio is also disclosed.

A utility cart includes a suspension having an integral suspension bracket having an attachment point for a lateral suspension link, holes through which U-bolts are passed to secure an axle of the utility cart to the bracket, and can include an opening into which a spring pin (e.g. a pin of a leaf spring) can be inserted. The suspension bracket can alternatively include a brake cable attachment feature. The suspension bracket can be cut from sheet stock of material, and stamped into final or near final form. In one embodiment a threaded nut can be attached to the attachment point for the lateral suspension link.

A drop axle lift kit for a golf cart includes a base plate. Each support arm of a pair of support arms is positioned proximate a respective lateral side of the base plate. Each support plate of a pair of support plates is mounted to a respective support arm of the pair of support arms at a distal end of the respective support arm. A pair of rod end bearings is configured to rotatably support a front steering spindle of the golf cart such that the front steering spindle of the golf cart is rotatable about an axis. The pair of rod end bearings is mounted to one of the pair of support plates such that an angle defined between the axis and vertical is adjustable in order to change a canter of a wheel on the front steering spindle of the golf cart.