Abstract: A child transporter comprises a wheel having an axle, a seat located directly above the wheel for supporting the child, at least one footrest for supporting the child's feet such that, in use, the child straddles the wheel, and a handle extending away from the wheel so as to be graspable by an adult. The seat and footrest are positioned so that the child's weight is substantially over the central axle. This makes the child transporter easy to control from the point of view of tipping sideways, pushing forwards and steering at walking pace. At higher speeds, such as jogging and walking paces, the child transporter becomes even easier to control. This allows an adult to participate in activities such as walking or jogging, at speed or over rough ground, without carrying the child but whilst maintaining proper supervision over the child.

Abstract: A vacuum cleaning head includes a rotatable brush bar and an air turbine driving the brush bar. An air inlet admits air to drive the turbine. A button is movable between an open position, in which it admits air to the turbine, and a closed position in which it closes the inlet and prevents air from reaching the turbine. The button is movable in response to the speed of rotation of the turbine or to the flow of air to or through the turbine exceeding a predetermined limit.