Process for the manufacture of an exhaust silencer

Details Process for the manufacture of an exhaust silencer Process for the manufacture of an exhaust silencer

1989-08-04

1991-08-06

Rosenbaum, Mark

Metal working

Method of mechanical manufacture

Muffler, manifold or exhaust pipe making

29463, 181256, 181282, B21K 2900

Patent

active

050365851

ABSTRACT:
In a process for the manufacture of an exhaust silencer for motor vehicles, the advantages derived from employing mineral fiber mouldings are extensively retained while at the same time greatly reducing expenditure on shape-stabilization and transportation. To this end the silencer casing itself is divided in the meridian plane and the mineral wool is supplied and inserted directly into the original silencer casing in the form of precisely dimensioned prefabricated elements which have been impregnated with a suitable fluid, for example pretreated with synthetic resin, but not cured. This enables fast and reliable positioning of the impregnated and manually compressed prefabricated elements around the periphery of the exhaust pipe and the internal component containing the exhaust pipe inside the original silencer casing; once the silencer casing has been closed, the silencer is ready for installation. Curing, hardening or some other time consuming method of shape-stabilization is not necessary. Nevertheless, in comparison with packing the silencer casing with loose mineral wool, a more even fiber distribution is achieved, and the introduction of a specified quantity of fibers is assured through the employment of prefabricated elements, whereby the impregnation of the prefabricated elements renders them soft and pliable and thus easy to work with when placing them in position under compression.

REFERENCES:
patent: 2059487 (1936-11-01), Peik
patent: 3710891 (1973-01-01), Flugger
patent: 3981378 (1976-09-01), Potter
patent: 4026381 (1977-05-01), Conley
patent: 4116303 (1978-09-01), Trudell
patent: 4263982 (1981-04-01), Feuling
patent: 4269800 (1981-05-01), Sommer
patent: 4513841 (1985-04-01), Shimoji et al.
patent: 4765437 (1988-08-01), Harwood et al.

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