Personal watercraft

Details Personal watercraft Personal watercraft

2005-02-15

2005-02-15

Basinger, Sherman (Department: 3617)

Marine propulsion

Means for accomodating or moving engine fluids

Means for handling exhaust gas

C440S08900C, C440S08900C

Reexamination Certificate

active

06855022

ABSTRACT:
A first exhaust chamber and a second exhaust chamber are disposed within a body of a watercraft. The first exhaust chamber communicates with an exhaust port of an engine through a first exhaust pipe. A first space of the first exhaust chamber communicates with the second exhaust chamber through a first inverted-U shaped pipe. The second exhaust chamber communicates with another space of the first exhaust chamber through a second inverted-U shaped pipe. The first and second inverted-U shaped pipes are each positioned in the flow path of the exhaust gas and bent to be substantially inverted-U shaped. The other space of the first exhaust chamber communicates with an outside of the body through a second exhaust pipe. An uppermost portion of the first inverted-U shaped pipe and an uppermost portion of the second inverted-U shaped pipe are located higher than a waterline of the watercraft.

REFERENCES:
patent: 5699749 (1997-12-01), Yamada et al.
patent: 6206741 (2001-03-01), Matsuda
patent: 6290557 (2001-09-01), Yokoya
patent: 6688929 (2004-02-01), Lecours et al.
patent: 3290037 (2002-03-01), None

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