KOCHSTAR TYPE SINGLE-PIECE SOUND ABSORBER Russian patent published in 2014 - IPC E04B1/84 

FIELD: physics, acoustics.

SUBSTANCE: invention relates to industrial acoustics, particularly to broadband soundproofing, and can be used in all industries as a soundproofing means. In the single-piece sound absorber, consisting of a perforated frame filled with a sound-absorbing material, the frame is in the form of an axially symmetrical body of revolution with a cylindrical shape with top and bottom flat bases. The external toothed surface of said body has a toothed shape in a section perpendicular to the axis of the body of revolution, and the internal surface in the form of a cylindrical shell which is arranged coaxially with respect to the cylindrical surface around which triangular teeth are located.

EFFECT: high efficiency of soundproofing.

2 cl, 2 dwg