초록 ▼

A siphon inhibiting valve comprises first and second portions of a housing structure and a buoyant member disposed within the housing structure for movement along a first axis between an inlet port and an outlet port. The buoyant member is shaped to have a cylindrical portion and another portion whi

A siphon inhibiting valve comprises first and second portions of a housing structure and a buoyant member disposed within the housing structure for movement along a first axis between an inlet port and an outlet port. The buoyant member is shaped to have a cylindrical portion and another portion which is shaped in the form of a frustum of a cone. Upward movement of the buoyant member causes an elastomeric seal on the buoyant member to come into contact with an internal lip formed in the housing structure, thereby creating a seal that prevents an upward flow of water in a direction from the outlet port to the inlet port. When cooling water is drained from the outlet port area, the buoyant member is forced downwardly into an open position by its own weight and the weight of the water on its inlet port side. This free movement of the buoyant member allows the water on the inlet port side to drain without manual intervention. When normal flow occurs, in a direction from an inlet port to the outlet port, the buoyant member is forced downward into an open position and water flows around the buoyant member from a water pump toward the cooling system of the engine.

대표청구항 ▼

1. 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

1. 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.