Arrangement for supplying combustion air to an outboard motor

Marine apparatus comprising a boat including a first wall extending generally in the fore and aft direction and having therein an air outlet opening, a second wall which extends in fixed relation to, in generally parallel relation to, and in spaced relation from said first wall and which has therein an air intake opening communicating with the atmosphere, conduit means communicating between said air intake opening and said air outlet opening for conducting air therebetween, a propulsion unit mounted on said boat and including a propeller shaft, an engine drivingly connected to said propeller shaft, a cover spaced from said first wall int he direction opposite from the spacing of said second wall, surrounding said engine, and having therein an air inlet opening, and flexible duct means which communicates between said air outlet opening and said air inlet opening.

Marine apparatus comprising a boat including a hull with a wall extending generally in the fore and aft direction and below the water during normal operation of said boat, said wall having therein an air outlet opening, a propulsion unit mounted on said boat and including a propeller shaft, an engine drivingly connected to said propeller shaft, and a cover surrounding said engine and having therein an air inlet opening, and duct means communicating between said air outlet opening and said air inlet opening.

Marine apparatus comprising a boat including a hull, a stringer, a deck supported by said stringer, and a wall extending generally in the fore and aft direction and including a lower portion formed at least in part by said stringer and an upper portion formed at least in part by said deck, said wall having therein an air outlet opening, a propulsion unit mounted on said boat and including a propeller shaft, an engine drivingly connected to said propeller shaft, and a cover surrounding said engine and having therein an air inlet opening, and duct means communicating between said air outlet opening and said air inlet opening.

Marine apparatus comprising a boat including a wall which extends generally in the fore and aft direction, which has an aft end and a fore end, and which has therein an air outlet opening, a propulsion unit mounted on said boat and including a propeller shaft, an engine drivingly connected to said propeller shaft, and a cover which surrounds said engine, which has an aft end located forwardly of said aft end of said wall, which has a fore end located rearwardly of said fore end of said wall, and which has therein an air inlet opening, and duct means communicating between said air outlet opening and said air inlet opening.

Marine apparatus comprising a boat including a first wall having therein an air outlet opening, a second wall fixed with respect to said first wall and having therein an air intake opening, a conduit communicating between said air intake opening and said air outlet opening for conducting air therebetween, a propulsion unit mounted on said boat, and including a propeller shaft, an engine drivingly connected to said propeller shaft, and a cover surrounding said engine and having therein an air inlet opening, and flexible duct means communicating between said air outlet opening and said air inlet opening.

Marine apparatus comprising a boat including a hull, said hull including a first wall which extends generally in the fore and aft direction, which has an aft end and a fore end, which extends below water during normal operation of said boat, and which has therein an air outlet opening, and a second wall which is generally parallel to and spaced from said first wall and which has therein an air intake opening, means communicating between said air intake opening and said air outlet opening for conducting air therebetween, a propulsion unit mounted on said boat and including a propeller shaft, an engine drivingly connected to said propeller shaft, and a cover which surrounds said engine, which has an aft end located forwardly of said aft end of said first wall, which has a fore end located rearwardly of said fore end of said first wall, and which has therein an air inlet opening, and a flexible conduit communicating between said air outlet opening and said air inlet opening.

A boat comprising a first wall extending generally in the fore and aft direction, and below the water during normal boat operation, and having therein an air outlet opening adapted to communicate with a propulsion unit, a second wall which is generally parallel to and spaced from said first wall and which has therein an air intake opening, a third wall which is generally parallel to and spaced from said first wall in the direction opposite from the spacing of the second wall and so as to define between said first and third walls a space adapted to contain the propulsion unit, and means communicating between said air intake opening and said air outlet opening for conducting air therebetween.