초록 ▼

A powered surfboard includes a board defining a stem and a stern. An internal combustion engine is housed within the board closer to the stern than the stem. The exhaust system extends fore of the internal combustion before it bends back on itself and terminates at a position aft of the bend. This c

A powered surfboard includes a board defining a stem and a stern. An internal combustion engine is housed within the board closer to the stern than the stem. The exhaust system extends fore of the internal combustion before it bends back on itself and terminates at a position aft of the bend. This configuration acts as a valve in that, under typical operating conditions, water will not pass through the exhaust system to reach the internal combustion engine. The internal combustion engine is connected to a pump which receives the force produced by the internal combustion engine to force water to pass therethrough propelling the powered surfboard forward. The pump and the internal combustion engine are connected to the same interior surface of the hull of the board to reduce the amount of misalignment therebetween.

대표청구항 ▼

[What is claimed is:] [1.]a board having a stem and a stem and defining an interior compartment extending therebetween and a longitudinal axis therethrough;an internal combustion engine housed within said interior compartment, said internal combustion engine generating an output force and exhaust fu

[What is claimed is:] [1.]a board having a stem and a stem and defining an interior compartment extending therebetween and a longitudinal axis therethrough;an internal combustion engine housed within said interior compartment, said internal combustion engine generating an output force and exhaust fumes;a pump connected to said internal combustion engine for receiving said output force to pump a portion of the water therethrough; andan exhaust assembly including an exhaust pipe extension having an extension bend and a expansion chamber to cool and muffle the exhaust fumes, said expansion chamber defining a top and a bottom, said expansion chamber having an inlet disposed adjacent said top of said expansion chamber and an outlet disposed adjacent said bottom of said expansion chamber wherein said exhaust pipe extension extends through said inlet of said expansion chamber in a manner such that said exhaust pipe extension is directed toward said outlet at said bottom of said expansion chamber due to said extension bend in said exhaust pipe extension.