US Patent 9759439 Sound-absorbent element for an air outlet

The invention relates to a sound-absorbent element for an air outlet, said air outlet comprising a housing with an air outlet opening and a connection to an air supply shaft, at least one sound-absorbent element being mounted in said housing and/or a housing of the air supply shaft, and said sound-absorbent element comprising a carrier that is connected to at least one layer of sound-absorbent material. Said at least one layer of sound-absorbent material comprises activated carbon, or at least one additional layer of activated carbon is applied to this layer of sound-absorbent material.