Device on a motor-driven vehicle to detect an obstacle in the way of the vehicle during backing

摘要

A device on a vehicle to activate its brake system on the presence of an obstacle behind the vehicle during backing. Holders (7) project backwards from the vehicle with members (9, 10) for transmitting and receiving light. If the beam of light is interrupted, the vehicle is braked.PPIn order to keep members (9, 10) free of dirt etc. air lines (5) directed towards them are connected to the quick- emptying valve (2) of the vehicle.