A removable weighted vehicle safety guard system having a safety attachment that removably attaches to the back end of a vehicle to add weight, thereby helping to keep the back end of the vehicle stabilized while driving in inclement weather or on slippery road surfaces, and additionally forms a brush guard to prevent damage to the vehicle should another vehicle rear-end the user's vehicle. The removable weighted vehicle safety guard system attaches to the back end of the vehicle via the hitch and is secured using bolts or trailer pins. The removable weighted vehicle safety guard system provides static weight to the back end of the vehicle but may optionally also receive additional if needed. The additional weight may take a number of forms, including weight blocks, and can be added to the removable weighted vehicle safety guard system via bolts or trailer pins.

A method, system and apparatus for carrying a user including a board for supporting the user, a plurality of ground-contacting members coupled with the board, a motorized drive assembly coupled with the ground-contacting members and one or more sensors coupled with the drive assembly. In operation, the drive assembly adjusts the velocity of the ground-contacting member based on one or more distances of the board from a surface below the board as detected by the sensors.

A balancing support system is for a saddle ride-type motor vehicle that includes a frame assembly including a head tube in a front portion of the frame assembly, is configured to assist a rider by balancing the motor vehicle, and includes: a steering shaft rotatably journaled about the head tube; a plurality of sensors that senses various dynamic parameters of the motor vehicle and includes a steering angle sensor; an actuator unit secured to a first portion of the frame assembly; a torque enhancer unit configured to provide a driving force from the actuator unit to the steering shaft and disposed above the head tube; and a balancing support-control unit that estimates an estimated steering angle based on inputs received from the plurality of sensors, compares the estimated steering angle with an actual steering angle, and triggers the actuator unit.

An arrangement and method are provided for enabling rotation movement between a tandem or caterpillar axle and a body of a vehicle. This type of vehicle includes at least one body part that is provided with a tandem or caterpillar axle. At least one body part includes a main body and an auxiliary body connected to it to rotate around the longitudinal axis of the vehicle or an essentially parallel axis thereto. The tandem or caterpillar axle is connected substantially rigidly to the main body, and the body part has at least one actuator for controlling the rotation movement between the main body and auxiliary body. In this way, changes in the position and motion status of the auxiliary body, especially in relation to the rotation around the longitudinal axis of the vehicle, are arranged to cause in the actuator a pushing or pulling motion that steers the auxiliary body to a rotation movement for the purpose of arranging the auxiliary body to a substantially horizontal position.

An arrangement and method are provided for enabling rotation movement between a tandem or caterpillar axle and a body of a vehicle. This type of vehicle includes at least one body part that is provided with a tandem or caterpillar axle. At least one body part includes a main body and an auxiliary body connected to it to rotate around the longitudinal axis of the vehicle or an essentially parallel axis thereto. The tandem or caterpillar axle is connected substantially rigidly to the main body, and the body part has at least one actuator for controlling the rotation movement between the main body and auxiliary body. In this way, changes in the position and motion status of the auxiliary body, especially in relation to the rotation around the longitudinal axis of the vehicle, are arranged to cause in the actuator a pushing or pulling motion that steers the auxiliary body to a rotation movement for the purpose of arranging the auxiliary body to a substantially horizontal position.

Robotic systems according to the invention include a frame or body with two or more wheels rotatably mounted on the frame or body and a motor for independently driving each wheel. A system controller generates a signal for actuating each motor based on information provided by one or more sensors in communication with the system controller for generating feedback signals for providing reactive actuation of the motors for generating one or more functions selected from the group consisting of forward motion, backward motion, climbing, and balancing. A power source is included for providing power to operate the drive motors, system controller and the one or more sensors.

Robotic systems according to the invention include a frame or body with two or more wheels rotatably mounted on the frame or body and a motor for independently driving each wheel. A system controller generates a signal for actuating each motor based on information provided by one or more sensors in communication with the system controller for generating feedback signals for providing reactive actuation of the motors for generating one or more functions selected from the group consisting of forward motion, backward motion, climbing, and balancing. A power source is included for providing power to operate the drive motors, system controller and the one or more sensors.

Sets of magnet assemblies coupled to the undercarriage of an amusement kart are provided. Each of the magnet assemblies can include: a suspension component coupled to the undercarriage; magnetic material coupled to the suspension component; and a rotating component coupled to the suspension component. Other sets of magnet assemblies can include a skid component coupled to the suspension component. Amusement park attractions are provided that can include: an amusement kart having one or more magnet assemblies coupled to an undercarriage of the amusement kart; and a track comprising iron plating sufficient to magnetically engage the one or more magnet assemblies. Amusement karts are also provided that can include: a frame supported by front and rear wheels; and complimentary side rails extending along both sides of the frame and between the front and rear wheels.

Sets of magnet assemblies coupled to the undercarriage of an amusement kart are provided. Each of the magnet assemblies can include: a suspension component coupled to the undercarriage; magnetic material coupled to the suspension component; and a rotating component coupled to the suspension component. Other sets of magnet assemblies can include a skid component coupled to the suspension component. Amusement park attractions are provided that can include: an amusement kart having one or more magnet assemblies coupled to an undercarriage of the amusement kart; and a track comprising iron plating sufficient to magnetically engage the one or more magnet assemblies. Amusement karts are also provided that can include: a frame supported by front and rear wheels; and complimentary side rails extending along both sides of the frame and between the front and rear wheels.

The present invention provides a ground-contour-following autonomous obstacle avoidance mower for hillside orchards and a control method thereof. Through cooperation of a push rod motor and a rotating pair, multi-angle cutting is achieved, and energy consumption needed by mowing operation is reduced. A connecting rod is arranged and forms a flexible mechanism together with an upper base bearing, a lower base bearing and a base-connecting unthreaded shaft. The flexible mechanism interacts with the push rod motor to achieve ground contour following operation, so that the mower as a whole can conduct ground-contour-following mowing operation on a complex orchard terrain, with a better cutting effect than that of a traditional mower. The use of a right-angle bypassing obstacle avoidance mode realizes precise obstacle avoidance of the mower, and achieves the operation purpose of not excessively relying on operators.