Input air mouthpiece has tubular body part with curved guide wall for input air and on opposite side is frontal guide flange

摘要

The input air mouthpiece has a tubular body part with a curved guide wall for input air and on the opposite side is a frontal guide flange. The guide flange extends outwards and is turned away from the body part in order to form a direct frontal guide flange which is essentially crescent-shaped, bulging spherically outwards.