A counterbalanced vertical track assembly which may be configured with three types of pulley support assemblies are herein disclosed. The first type of pulley support assembly has a pair of opposed pulley modules having an elongate structural element interposed the two pulley modules which are attached to end plates at both ends of the elongate structural element. The second type of pulley support assembly has a pair of opposed pulley modules which include male end connectors for demountable engagement of the pulley modules with another module of the system with female ends. The third type of pulley support assembly has a pair of opposed pulley modules wherein the modules' pulley brackets are repositionable to varying angular orientations by alternating screw mount positions selected on mount components at opposite ends of an elongate structural element.

A weight-bearing device includes a single wheel, a frame attached to the wheel, and an electric motor attached to the frame. The electric motor is configured to rotate a first gear, connected to a second gear with a chain. The second gear is connected to the wheel. The second gear and the first gear may have a gear ratio of greater than 8:1.

The present invention relates to a balance maintaining device for a transport apparatus. The balance maintaining device comprises a loading frame formed to be long in the lengthwise direction thereof and having two or more first and second supports, which are respectively formed at both sides of the lower portion of the loading frame, and a lower frame provided at the lower portion of the loading frame, and having both upper sides thereof linked and coupled to the first and second supports. The outside of the lower frame is coupled to a transport apparatus so as to maintain the loading frame in a horizontal state when the transport apparatus is shaken.

A cart assembly includes a base with wheels, a shelf support structure orthogonally arranged with respect to the base, one or more shelves supported by the support structure, and a swivel mechanism. The swivel mechanism is coupled to the base and the shelf support structure to provide an axis of rotation, such that the shelf support structure and the shelf or shelves are selectively rotatable with respect to the axis. The swivel mechanism may include a race that defines a socket on a circumference of the race. A pin is selectively engageable with the socket to prevent rotation of the race and the support structure. The shelf may include a thermoformed plastic tray, or three shelves arranged at three different levels of the shelf support structure. Some of the shelves may fold against and secure to the shelf support structure.

A transportation device and an automatic tilt stabilizer are disclosed herein. The transportation device has a structure with wheels joined by a shaft to a platform or chassis configured to support a basket, a mat, a seat and/or a tray. The automatic tilt stabilizer is configured to automatically stabilize the inclination of the platform or chassis, and includes a tilt sensor configured to detect an inclination of the platform or chassis, and a motor activated by a microcontroller configured to correct the inclination of the platform or chassis, so that the platform or chassis returns to a predefined inclination.

A bag configured for attachment to a stroller, a stroller in combination with a first and a second bag, and a method of stabilizing a stroller are provided. A stroller including a front support bar, a rear support bar, and a rear axle is used for transportation. A bag configured for attachment to the stroller has a front engagement member, a rear engagement member, a body coupled between and supported by the front and rear engagement members, the body includes at least one pocket arranged inside the body, and a receptacle in the at least one pocket. A weight is received by the receptacle, and when the bag is attached to the stroller, the weight applies a rotational moment at the front support bar of the stroller to resist rotation of the stroller about the rear axle.

A handcart may include: a front wheel; a rear wheel; a support frame supporting the front wheel and the rear wheel; a receptacle pivotable relative to the support frame; a load sensor configured to detect a load applied to the rear wheel; and a control unit. When the load detected by the load sensor is less than or equal to a predetermined load, the control unit may be configured to determine that the rear wheel is predicted to lift from a ground.

A wheelbarrow with an electric motor built into the wheel helps the user to push and brake the wheelbarrow. A sensor is installed on the handle support, which detects the position of the hand in the axial direction. A button is mounted on the handle support next to the handle. There is an acceleration sensor and a gyroscope on the wheelbarrow. Based on the axial movement of the hand, the wheelbarrow controller calculates the pushing or pulling force of the arms on the handles. The operation of the electric motor is controlled by the wheelbarrow controller via the motor controller, based on the information received from the motor controller, the detected sensor values and the switch status. As a result, the force of the electric motor can be used effectively for an additional drive or braking, so that the required push force of the arms can be reduced. When braking, the motor acts as a generator and charges the battery. Two batteries are placed in the supported legs of the wheelbarrow, which contributes to the weight balance of the wheelbarrow and allows good cooling of the batteries. The construction of the frame provides battery protection and is adapted to transportation on a towing hitch of a passenger car.

A counterbalanced vertical track assembly which may be configured with three types of pulley support assemblies are herein disclosed. The first type of pulley support assembly has a pair of opposed pulley modules having an elongate structural element interposed the two pulley modules which are attached to end plates at both ends of the elongate structural element. The second type of pulley support assembly has a pair of opposed pulley modules which include male end connectors for demountable engagement of the pulley modules with another module of the system with female ends. The third type of pulley support assembly has a pair of opposed pulley modules wherein the modules' pulley brackets are repositionable to varying angular orientations by alternating screw mount positions selected on mount components at opposite ends of an elongate structural element.

A device for use in lifting, transporting and installing sheet material has a base, wheels on which the base is supported, a mast that extends upwardly from the base, a carriage that is in engagement with the mast, a supporting head that is mounted to the carriage, and a lifting mechanism to provide support to the carriage in the longitudinal direction of the mast. The wheels include rear wheels that are connected to the rear of the base in a manner that permits steering of the device during movement across a surface, and a front wheel set that is connected to the front of the base. The front wheel set includes a wheel to each side of the device, and the wheels of the front wheel set are rotatable about a common axis. The connection of the mast to the base is such that the mast is rotatable relative to the base about a rotational axis. The device further has an actuator that is operable to change the angular position of the mast relative to the base. The supporting head is configured to support sheet material above the surface.