Water jet propulsion unit
AssigneeSanshin Kogyo Kabushiki Kaisha
InventorNoboru Suganuma
Life of this patent
Estimating the term…
Abstract
A water jet propulsion unit for a watercraft including a separator for extracting a portion of the water pumped by the jet propulsion unit for another purpose while removing foreign particles from the separated water and returning them to the jet propulsion unit to avoid clogging of the external water supply.
Claims8
A water jet propulsion unit for a watercraft comprising a water inlet portion defining a water inlet through which water may be drawn from the body of water in which the watercraft is operating, an impeller portion containing an impeller for pumping water and a discharge nozzle portion through which water pumped by said impeller is discharged for propelling the watercraft, a separator device for separating foreign particles from said water, an inlet opening communicating said separator device with a side of said jet propulsion unit for receiving a portion of the water pumped by said impeller and returning the separated particles to said jet propulsion unit, and outlet opening for receiving the water from which particles have been separated, and means defining a flow path from said inlet opening to said outlet opening including a horizontally extending portion terminating at a wall disposed in confronting relation to said inlet opening to turn and redirect the flow of water from said horizontally extending portion vertically along said side of said jet propulsion unit for reducing the velocity of water and particles passing through said inlet opening.
Dependencies are inferred from the claim text.