US Patent 9642409 Industrial impact protection helmet

The impact protection cap manufactured from a bendable synthetic material comprises at least one middle shell (3), connected in the forehead area of the wearer by means of flexible areas (12, 13) to lateral shells (1, 2) appended to the sides thereof, characterized in that the lateral shells (1, 2) extend at least partially over the middle shell (3) thereby building overlapping areas (22, 22′) wherebetween ventilation slots (7, 8) are formed.