Acoustics – Sound-modifying means – Combined
Patent
1993-05-11
1994-06-14
Gellner, Michael L.
Acoustics
Sound-modifying means
Combined
181227, 181255, 181258, 181264, 181272, F01N 500
Patent
active
053212150
ABSTRACT:
A vertical exhaust system for an internal combustion engine that incorporates a provision for receiving and trapping water, such as rain, that may enter the open upper end of the exhaust conduit. The exhaust system includes a vertical outer body and a perforated tube is disposed within the outer body and spaced therefrom to provide an annular chamber therebetween. A plug or closure is secured within the tube and is spaced from the lower end of the tube, thus closing off the tube. An annular flange interconnects the inner tube with the outer body and is spaced longitudinally below the plug, to thereby enclose the lower end of the chamber. A drain hole extends through the outer body and connects the chamber with the exterior. The drain hole is spaced above the flange, so that the space between the flange and the drain hole comprises a trap to collect water that may enter the upper end of the exhaust system.
REFERENCES:
patent: 2482577 (1949-09-01), Dahlstrom
patent: 2721619 (1955-10-01), Cheairs
patent: 2732913 (1956-01-01), Higgins
patent: 4032310 (1977-06-01), Ignoffo
patent: 4450934 (1984-05-01), Davis
patent: 4527659 (1988-07-01), Harrington
patent: 5170020 (1992-12-01), Kruger et al.
Dang Khanh
Gellner Michael L.
Nelson Industries Inc.
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