Safe efficient outboard motor assembly

Details Safe efficient outboard motor assembly Safe efficient outboard motor assembly

2007-06-29

2008-11-04

Avila, Stephen (Department: 3617)

Marine propulsion

Jet drive

Reexamination Certificate

active

07445532

ABSTRACT:
An outboard motor assembly for use as external propulsion for a watercraft includes a drive assembly, a shaft assembly, and an impeller-jet assembly coupled to the shaft assembly. The impeller-jet assembly includes an inlet stator, an exit stator, an impeller, and an external housing surrounding the stators and impeller. The inlet stator contains a plurality of blades, forcing the flow of water into an optimum direction for the impeller. The exit stator also contains a plurality of blades, which are configured to direct the flow from the impeller, removing the twist and resulting in a more efficient flow of water. The exit stator is tapered such that each blade is thicker at the trailing edge than at the leading edge, to create a circular array of separate nozzles with gaps between them.

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