Garage parking position indicator

摘要: A garage parking position indicator operable on principles of wave energy. energy detector such as an infrared receiver is mounted to one side the access door at a point displaced from rear wall by distance greater than length vehicle. source, transmitter, opposite receiver. The transmitter and are height suitable for cross-secting traveling vehicle his leading edge its trailing edge, preferably bumper bumper. constantly transmits directs toward receiving means so that presence any portion between will interrupt reception