Jet boat

Details Jet boat Jet boat

1992-11-16

1995-02-14

Oberleitner, Robert J.

Marine propulsion

Means for accomodating or moving engine fluids

Means for handling exhaust gas

114270, B63H 2132, B63H 2134, B63H 2138

Patent

active

053890221

ABSTRACT:
A jet propulsion unit having an improved exhaust silencing device that is comprised of an expansion chamber that extends across the rear end of the tunnel and which forms a lower closure therefor. The exhaust silencing device comprises an expansion chamber through which an exhaust conduit extends from the exhaust system of the engine to an underwater exhaust gas discharge. Perforated sections of the conduit communicate the exhaust gases with the interior of the expansion chamber for silencing purposes.

REFERENCES:
patent: 4002136 (1977-01-01), Michalak
patent: 4213414 (1980-07-01), Sato
patent: 4274357 (1981-06-01), Dawson
patent: 4498876 (1985-02-01), Zemlicka
patent: 4589852 (1986-05-01), Price
patent: 4744778 (1988-05-01), Porter
patent: 4786265 (1988-11-01), Porter
patent: 4840589 (1989-06-01), Breaux
patent: 5007870 (1991-04-01), Okubo et al.

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