Exhaust system for small watercraft and personal watercraft

Details Exhaust system for small watercraft and personal watercraft Exhaust system for small watercraft and personal watercraft

2005-09-06

2005-09-06

Swinehart, Ed (Department: 3617)

Marine propulsion

Means for accomodating or moving engine fluids

Means for handling exhaust gas

Reexamination Certificate

active

06939185

ABSTRACT:
An exhaust system for a small watercraft is disclosed, wherein the exhaust system includes an exhaust chamber having a predetermined volume, within which an exhaust gas discharged from an engine flows, the exhaust gas containing water supplied at a position of the exhaust system, and an exhaust pipe having an upstream end portion in a flow passage of the exhaust gas, which is connected to the exhaust chamber, the exhaust pipe being configured to discharge the exhaust gas from the exhaust chamber, wherein the upstream end portion of the exhaust pipe is configured to protrude into the exhaust chamber to a vicinity of a lower end of the exhaust chamber and has an upstream opening end face that opens substantially downward so as to be spaced apart a predetermined distance from an inner surface of the exhaust chamber, which is opposed to upstream opening end face.

REFERENCES:
patent: 4713029 (1987-12-01), Ford
patent: 5045005 (1991-09-01), Miles, Jr.
patent: 5554058 (1996-09-01), LeQuire
patent: 6273772 (2001-08-01), Smullin
patent: 6290557 (2001-09-01), Yokoya
patent: 6755705 (2004-06-01), Slattery
patent: 2002/0022416 (2002-02-01), Lecours et al.
patent: 08-119196 (1996-05-01), None

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