To meet the needs of docto and nues, who work in contact with infected people in this Emergency-Covid phase, this helmet allows you to have your face free of both masks and viso, especially for those who wear glasses, avoiding uncomfortable phenomena such as fogged glasses. A traparent PVC helmet with a 3D printed structure, the project coists of 2 parts, the structure to hold the PVC around the head and a crescent element to be placed behind the neck with the passage of the closing elastic around the neck and with the connectio for the air inlet pipe from the standard C-PAP respirator and the second tube with "non-return" valve for air outlet with the possibility of adding a soft bag as an expaion chamber. The model is designed in several parts to be printed on a standard 3D printer with dimeio 20x20x20 cm. Traparent PVC can be heat sealed as it is suitable for use in gazebos or tents. The two elastics, with a knot on the forehead, hold the structure to the head and are tied posteriorly to the vertical rod on the back of the neck. The concept of internal overpressure avoids any inflow of external air iide the helmet.
in case of emergency, the structure can also be made of "wire" of adequate thickness.
design by Giovanni Giobbi Vona & Antonio Onorati Public domain files.