US 5,859,394 A · Muffler with stamped internal plates defining tubes and separating chambers

Abstract

An exhaust muffler includes upper and lower internal plates and upper and lower external shells. The internal plates are formed to define a chamber therebetween. The external shells are formed to define chambers on opposite respective sides of the interconnected internal plates. An upper tube plate is secured to the upper internal plate. The upper tube plate and the upper internal plate are formed to define an inlet tube therebetween. The inlet tube includes louvers to permit exhaust gas flow into the chamber between the upper internal plate and the upper external shell. Louvers in the upper internal plate permit exhaust gas to flow from the upper chamber into the internal chamber between the internal plates. Louvers in the lower internal plate permit exhaust gas to flow into the lower chamber. An outlet tube communicates with the gravitational low point in the lower external shell and permits flow of exhaust gas from the muffler while siphoning condensate in the lower chamber.

Claims10

Dependent claims

A muffler comprising:

top and bottom internal plates having peripheral regions securely connected to one another and having internal regions formed away from one another to define an internal chamber therebetween, said first and second plates having aperture means therethrough for permitting gas communication into and out of said internal chamber;
upper and lower external shells having peripheral regions secured respectively to the peripheral regions of said upper and lower internal plates, portions of said upper and lower external shells intermediate said peripheral regions thereof being formed to define upper and lower chambers enclosing the upper and lower internal plates and the aperture means therein;
an upper tube plate secured to said upper internal plate, said upper tube plate and said upper internal plate being formed relative to one another to define an inlet tube to the muffler, said inlet tube including aperture means for permitting gas communication into the upper chamber;
and
an outlet tube disposed in said lower chamber for permitting flow of exhaust gas from said lower chamber out of said muffler.

2 more elements

Dependencies are inferred from the claim text.

Muffler with stamped internal plates defining tubes and separating chambers

Life of this patent

Muffler with stamped internal plates defining tubes and separating chambers

Life of this patent

Abstract

Claims10