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US 8,282,368 B2Granted
Check valve
AssigneeFord Global Technologies, LLC
InventorPeter Francis Worrel
Life of this patent
Estimating the term…
Abstract
A check valve. An illustrative embodiment of the check valve includes a valve body, a plurality of discharge port openings having at least one of a non-uniform width and a non-uniform position extending through the valve body and a flexible valve disk disposed generally adjacent to the valve body.
Claims20
A check valve, comprising:
- a valve body;
- a plurality of discharge port openings having a non-uniform width with respect to at least another discharge port opening, said discharge port openings having respective central portions disposed circumferentially adjacent at a substantially same radial distance, said openings on a generally planar disk shaped surface of said valve body, said openings extending axially through said valve body;
- and
- a flexible valve disk disposed generally adjacent to said valve body, said flexible valve disk overlying said discharge port openings.
1 more element
A vacuum pump, comprising:
- a pump housing having a suction conduit, a discharge conduit and a chamber between said suction conduit and said discharge conduit;
- a piston reciprocally mounted in said chamber;
- a motor engaging said piston;
- a suction check valve disposed between said suction conduit and said chamber;
- a discharge check valve disposed between said chamber and said discharge conduit;
- and
- wherein each of said suction check valve and said discharge check valve comprises a valve body, a plurality of discharge port openings having a non-uniform width with respect to at least another discharge port opening, said port openings having respective central portions disposed circumferentially adjacent at a substantially same radial distance, said openings on a generally planar disk shaped surface of said valve body, said openings extending axially through said valve body, and a flexible valve disk disposed generally adjacent to said valve body, said flexible valve disk overlying said discharge port openings.
4 more elements
A method of reducing noise in a vacuum pump having a suction conduit, a discharge conduit, a chamber between the suction conduit and the discharge conduit and a piston reciprocally mounted in the chamber, comprising:
- providing a suction check valve between the suction conduit and the chamber;
- providing a discharge check valve between the chamber and the discharge conduit;
- and
- wherein each of said suction check valve and said discharge check valve comprises a valve body, a plurality of discharge port openings having a non-uniform width with respect to at least another discharge port opening, said discharge port openings having respective central portions disposed circumferentially adjacent at a substantially same radial distance, said openings on a generally planar disk shaped surface of said valve body, said openings extending axially through said valve body, and a flexible valve disk disposed generally adjacent to said valve body, said flexible valve disk overlying said discharge port openings.
1 more element
Dependencies are inferred from the claim text.