Exhaust passage of small watercraft, method of connecting...

Details Exhaust passage of small watercraft, method of connecting... Exhaust passage of small watercraft, method of connecting...

2005-07-05

2005-07-05

Sotelo, Jesus D. (Department: 3617)

Marine propulsion

Means for accomodating or moving engine fluids

Means for handling exhaust gas

C440S08900C

Reexamination Certificate

active

06913499

ABSTRACT:
An exhaust passage configured to discharge an exhaust gas from an engine of a small watercraft, comprises at least a first exhaust pipe, a second exhaust pipe connected to the first exhaust pipe, and a connecting structure configured to connect the first exhaust pipe and the second exhaust pipe to each other, the connecting structure including a first tubular insertion end portion provided at a connecting end portion of the first exhaust pipe so as to protrude toward a connecting end portion of the second exhaust pipe, a second tubular insertion end portion provided at the connecting end portion of the second exhaust pipe so as to accommodate the first tubular insertion end portion of the first exhaust pipe, a ring groove formed to extend circumferentially over an entire outer peripheral face of the first insertion end portion, and a seal ring configured to engage in the ring groove.

REFERENCES:
patent: 5016439 (1991-05-01), Nitta
patent: 6461208 (2002-10-01), Suzuki et al.
patent: 6739921 (2004-05-01), Nakajima et al.

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