Patent ID: 6439939
Filing Date: 2002-08-27
Classification: B63H,F01N,F01P,Y10T

Abstract:
A siphon inhibiting valve for a marine propulsion system, comprising:a housing structure having an inlet port and an outlet port; a buoyant member disposed for movement along a first axis within said housing structure, said buoyant member being inhibited from rotating about a second axis which is perpendicular to said first axis; and a sealing surface of said buoyant member which is movable into contact with said housing structure proximate said inlet port, in response to movement of said buoyant member toward said inlet port, to inhibit a liquid from flowing in a direction from said outlet port through said inlet port, said housing structure being connected in fluid communication with a cooling system of a marine propulsion system with said inlet port being disposed upstream from said outlet port within said cooling system to receive cooling water from a body of water and said outlet port being disposed downstream from said inlet port within said cooling system to conduct water to a cooling system of an engine of said marine propulsion system.