Abstract: An implement for use in removing weeds, moss or other matter from the joints between paviours (P), comprises an elongate handle carrying a blade (12), the blade extending along an axis at an angle of 25° to 65° to the axis of the handle and being formed with an apex at its forward end. The implement is arranged for its handle to be held by a user when standing, with the handle extending forwardly and downwardly from the use and with the apex of the blade engaged in the joint between paviours: the user then draws the implement towards him.

Abstract: An immobilization system for a vehicle for assisting law enforcement includes a first remote control device, which transmits a predetermined wireless control signal, and a second remote control device, which includes a first directional antenna for transmitting a selectable wireless control signal in a first direction and a second directional antenna for transmitting a wireless enable signal in a second direction. The second remote control device includes an externally operable device for selecting the wireless control signal and the enable signal to be transmitted. A receiver is included for receiving the control signal and the enable signal with the predetermined control signal being substantially unique to the receiver. A device for disabling a vehicle by police, in response to either the predetermined control signal or the selectable control signal, is provided for allowing capture of those assailants seeking to escape by use of a motor vehicle.

Abstract: A system for immobilizing a stolen vehicle comprises a unit 10 for mounting in a vehicle and first and second remote control device 11, 21. The vehicle unit 10 comprises a receiver 13 for receiving wireless control signals directly from the remote control devices 11, 21 and means 15 for immobilizing the vehicle in response to predetermined control signals from either remote control device 11, 21. The first remote control device 11 is arranged to transmit a predetermined control signal which is substantially unique to the receiver 13 and the second remote control device 21 comprises means 16 for selecting the predetermined control signal to be transmitted.