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US 6,886,506 B1Granted
Pressure regulator with overmolded poppet
AssigneeBrunswick Corporation
InventorsJames C. Hubbell, Steven W. Habeck
Life of this patent
Estimating the term…
Abstract
A cooling system for an internal combustion engine of a marine propulsion system is provided with a poppet that is overmolded with a resilient sealing material to enhance its sealing capacity. As a result, the pressure within the internal combustion engine cooling passages can be maintained more accurately. Because undesirable leakage past the poppet is more successfully prevented by the overmolded poppet, the cooling system can more accurately regulate the temperature of the engine.
Claims14
An engine cooling system, comprising:
- a cooling passage formed within an internal combustion engine;
- a drain passage;
- a conduit disposed in fluid communication between said cooling passage and said drain passage;
- a poppet which is movable relative to said conduit between a first position and a second position, a liquid coolant being generally prevented from flowing through said conduit when said poppet is in said first position, said liquid coolant being generally permitted to flow through said conduit when said poppet is in said second position;
- a pressure regulating device associated with said poppet to urge said poppet into said first position;
- and
- a resilient sealing material overmolded on a sealing portion of said poppet, said sealing portion of said poppet being a flange extending from a body of said poppet, said resilient sealing material being formed on three surfaces of said flange.
4 more elements
An engine cooling system, comprising:
- a cooling passage formed within an internal combustion engine;
- a drain passage;
- a conduit disposed in fluid communication between said cooling passage and said drain passage;
- a poppet which is movable relative to said conduit between a first position and a second position, a liquid coolant being generally prevented from flowing through said conduit when said poppet is in said first position, said liquid coolant being generally permitted to flow through said conduit when said poppet is in said second position, said poppet comprising a sealing portion and an insertion portion, said insertion portion being disposed within said conduit;
- a pressure regulating device associated with said poppet to urge said poppet into said first position;
- and
- a resilient sealing material overmolded on said sealing portion of said poppet, said resilient sealing material being formed on three surfaces of said flange.
4 more elements
An engine cooling system, comprising:
- a cooling passage formed within an internal combustion engine;
- a drain passage;
- a conduit disposed in fluid communication between said cooling passage and said drain passage;
- a poppet which is movable relative to said conduit between a first position and a second position, a liquid coolant being generally prevented from flowing through said conduit when said poppet is in said first position, said liquid coolant being generally permitted to flow through said conduit when said poppet is in said second position, said poppet comprising a sealing portion and an insertion portion, said insertion portion being disposed within said conduit;
- a pressure regulating device associated with said poppet to urge said poppet into said first position;
- and
- a resilient sealing material overmolded on said sealing portion of said poppet, said sealing portion of said poppet being a flange extending from a body of said poppet, said resilient sealing material being formed on three surfaces of said flange.
4 more elements
Dependencies are inferred from the claim text.