Power plants – Reaction motor – Motive fluid principally liquid
Patent
1993-11-02
1994-07-05
Bertsch, Richard A.
Power plants
Reaction motor
Motive fluid principally liquid
416 93A, 440 89, B63H 2132
Patent
active
053256620
ABSTRACT:
An exhaust-through-the-hub system described herein includes an apparatus for discharge of exhaust gases from a marine outboard motor to the outer perimeter of an attached pump jet. Exhaust gas is ducted downwardly through the central body of the motor and rearwardly into a plenum cavity positioned in the pump jet. At least one hollow stator vane receives the exhaust gas and discharges the exhaust gas through the stator housing at a substantial depth below the water line, thereby resulting in a quieter running engine. The exhaust-through-the-hub system provides forward thrust when the motor is in forward gear and reverse thrust when the motor is in reverse gear.
REFERENCES:
patent: 3249083 (1966-05-01), Irgens
patent: 3389558 (1968-06-01), Hall
patent: 3849982 (1974-11-01), Hall
patent: 4023353 (1977-05-01), Hall
Hall Kimball P.
Martino John
Varney A. Michael
Bertsch Richard A.
Hall Marine Corporation
Wicker W. J.
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