Water inlet for outboard propulsion unit

Details Water inlet for outboard propulsion unit Water inlet for outboard propulsion unit

1985-11-07

1987-01-13

Barefoot, Galen L.

Marine propulsion

Means for accomodating or moving engine fluids

Cooling for engine

416 91, B63H 2110

Patent

active

046361758

ABSTRACT:
Water inlets (16) are formed on the sides of the gearcase (13) of a marine propulsion unit. Ramps (26) and (27) are formed in the gearcase (13) ahead of the inlets (16) to direct flow to the inlets (16). The ramp (26) ahead of the upper ports (16) has a greater depth to provide a substantial flow of water at positive pressure, while the ramp (27) ahead of the lower ports (16) has a lesser depth to avoid disturbances in flow when the unit is operated at high speeds where the upper inlets (16) are normally above the resting surface of the water.

REFERENCES:
patent: 1762957 (1930-06-01), Buehner
patent: 2021309 (1935-11-01), Irgens
patent: 2333555 (1943-01-01), Prucha
patent: 2536005 (1950-12-01), Knuth
patent: 2616386 (1952-11-01), Kiekhaefer
patent: 2847967 (1958-08-01), Kiekhaefer
patent: 3164121 (1965-01-01), Alexander
patent: 3434447 (1969-03-01), Christensen et al.
patent: 4392779 (1983-07-01), Bloemers

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