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US 5,628,269 AGranted
Jump pump arrangement for jet boat
AssigneeSanshin Kogyo Kabushiki Kaisha
InventorsYasuhiko Henmi, Makoto Nagafusa, Susumu Yamazaki
Life of this patent
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AssigneeSanshin Kogyo Kabushiki Kaisha
InventorsYasuhiko Henmi, Makoto Nagafusa, Susumu Yamazaki
Estimating the term…
A water-removal assembly for removing accumulated water from the bilge of a hull of a watercraft that includes a jet propulsion unit with an impeller. The water-removal assembly includes a water pickup provided in the engine compartment. A means for removing water from the engine compartment and preventing water from entering and syphoning into the engine compartment is connected to the water filter by a first conduit. The conduit connects the water removing and preventing means to a water discharge point in the jet propulsion unit so that water is pumped from the bilge. The water removing and preventing means includes a check valve that allows water to flow in one direction so that water is prevented from entering the bilge. A weep hole is provided in the water removing and preventing means to prevent syphoning from occurring in the water-removal assembly.
A water-removal assembly for removing water from a bilge of a watercraft that includes a removable seat, said water-removal assembly comprising a pumping device, at least one conduit communicating said bilge with said pumping device so as to remove water from said bilge, an inverted substantially U-shaped portion formed by said at least one conduit, a backflow prevention device provided in said U-shaped portion, an access opening provided below said removable seat, said backflow prevention device including a check valve that is easily accessible through said access opening and allows water to be removed from said bilge but substantially prevents water from entering said bilge.
Dependencies are inferred from the claim text.