SILENCER Russian patent published in 1994 - IPC

FIELD: mechanical engineering. SUBSTANCE: silencer has receiving chamber made of a bellows provided with a cover and inlet movable branch pipe positioned within the bellows. Air from bellows enters a chamber formed with a penetrable porous bushing provided with spherical cover made of a penetrable porous material. In addition the silencer is provided with a perforated casing which encloses penetrable porous bushing and bellows. Inner surface of the casing is provided with sound-absorbing material. Perforation is provided at the top part of the casing up to a level corresponding to location of the cover of the bellows. EFFECT: improved design. 3 cl, 1 dwg