Importance

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Abstract

A jet propulsion system for propelling a water craft through a body of water. The system includes a housing having a conduit formed therein for the passage of water, an inlet port and an outlet port. The inlet port has a lower edge which extends at least to the vertical plane defined by the upper edge such that the inlet port faces away from the bottom of the river or lake. An impeller is positioned in the housing between the inlet and outlet ports, and a stator structure is positioned between the impeller and the outlet port. The impeller is rotated by a drive assembly to draw water inwardly through the inlet port, drive the water past the impeller in an axial/rotational flow, and move the water through the outlet port. A coolant delivery system for delivering a supply of water for cooling the drive assembly includes a coolant passageway for transporting water from the conduit to a pump reservoir coupled to the drive assembly, and an inlet aperture opening into the conduit between the impeller and the outlet port.

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First Claim