US 4,655,317 AGranted

Sound damping device, preferably for reducing the noise of blow-off valves

AssigneesAutoipari Kutato es Fejlesztu Vallalat, szakmagyarorszagi Vegyimuyek

InventorsTibor Kolya, Bela Szoke, Karoly Kadar, Gyorgy Foti, Zoltan Gecsei

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Abstract

A sound damping device for suppressing the noise generated by a gas stream emitted by a blow-off valve includes a body of a porous, resiliently readily compressible material traversed by the gas stream and a nipple projecting into the body and having a passage oriented coaxially with the axis of the body. The passage has an inlet opening adapted to receive the gas stream from the valve and a sound suppressing outlet being spaced from the inlet opening and being situated within the body. There is further provided a deformable outer layer which substantially entirely surrounds the body and is bonded thereto. The outer layer, similarly to the body, is permeable to air.

Claims11

Dependent claims

In a sound damping device for suppressing the noise generated by a gas stream emitted by a blow-off valve;

the device including a body of a porous material traversed by the gas stream;
the improvement wherein said body is readily resiliently deformable and has a central axis;
a nipple projecting into said body and having a passage oriented coaxially with said axis;
said passage having an inlet opening adapted to receive the gas stream from the valve;
said nipple further including means for defining a sound suppressing outlet in said passage;
said sound suppressing outlet being spaced from said inlet opening and being situated within said body;
further comprising an outer layer substantially entirely surrounding said body and being bonded thereto;
said outer layer being deformable and being permeable to air.

5 more elements

Dependencies are inferred from the claim text.