Muffler
OwnerPaulo M. Negraoinventor
Life of this patent
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Abstract
A muffler having a tubular cylindrical fiber-reinforced resin body with tapered extremities ending in short necks, through said body being disposed an axial aluminum tube with extremities projecting outwardly from the assembly, said tube being perforated in the section inside the body and the internal space between the body and tube being filled with sound-absorbing material. During assembly of the muffler, the internal tube and the external body are fastened by means of clamps, with the interposition of gaskets adhered with the body resin itself in order to avoid leakage between the tube and body. The sound absorbing material is also mounted on pre-fabricated channels in the body, thus eliminating the need of handling it.
Claims1
A muffler, comprising a tubular synthetic resin body reinforced with glass fiber material said body having tapered extremities ending in short necks, an axial aluminum tube extending through said body, said tube being provided with extremities projecting outwardly from the body necks, said tube also being perforated in the section located inside the body, a sound-absorbent glass fiber material filling the internal space between said body and said aluminum tube, resilient gasket material interposed between said necks and said tube, said gaskets being adhered to the resin body material, clamps engaging around said body necks and means for tightening the clamps to retain the body parts together and to avoid leakage between the resin body and the aluminum tube.
Dependencies are inferred from the claim text.