Check valve including molded valve seat
AssigneeVernay Laboratories, Inc.
InventorsDennis A. Boehmer, Richard L. Gibson, Jr.
Life of this patent
Estimating the term…
Abstract
A ball check valve including a housing and a ball element movably positioned in the housing. An insert member is located at an inlet port of the housing, and an elastomeric element is molded directly onto the insert member and is positioned facing toward an outlet port of the housing for engagement with the ball element. A ball seat is ground into the elastomeric element at a precise angle matching a tangential angle of contact with the ball element such that engagement of the ball element with the ball seat forms a seal preventing fluid flow from the outlet port through the inlet port.
Claims11
A check valve comprising:
- a housing including a through bore defining a fluid passage, and an inlet port and an outlet port located at ends of said fluid passage;
- a ball element movably positioned in said housing and located between said inlet port and said outlet port;
- a rigid insert member located at said inlet port, said insert member including an interior surface defining a through aperture;
- an elastomeric element molded onto said insert member such that said elastomeric element is bonded to said insert member to form a unitary structure for insertion into said housing during assembly of said valve, said insert member defining a substrate supporting said elastomeric element facing said outlet port for engagement with said ball element;
- and
- wherein said insert member immovably supports said elastomeric element to facilitate grinding of a ball seat into said elastomeric element, said ball seat being formed in said elastomeric element at a precise angle matching a tangential angle of contact with said ball element such that engagement of said ball element with said ball seat forms a seal which prevents fluid flow from said outlet port through said inlet port.
A check valve comprising:
- a housing including a through bore defining a fluid passage, and an inlet port and an outlet port located at ends of said fluid passage;
- said through bore defining a first diameter and a second diameter larger than said first diameter, and including an insert seat at an interface between said first diameter and said second diameter;
- a ball element movably positioned in said first diameter of said through bore and located between said inlet port and said outlet port;
- a rigid insert member located at said inlet port in said second diameter of said bore, said insert member including an exterior surface and an interior surface defining a through aperture;
- an elastomeric element molded onto said insert member such that said elastomeric element is bonded to said insert member to form a unitary structure for insertion into said housing during assembly of said valve, said insert member defining a substrate supporting said elastomeric element facing said outlet port for engagement with said ball element;
- and
- wherein said insert member immovably supports said elastomeric element to facilitate grinding of a ball seat into said elastomeric element, said ball seat being formed in said elastomeric element at a precise angle matching a tangential angle of contact with said ball element such that engagement of said ball element with said ball seat forms a seal which prevents fluid flow from said outlet port through said inlet port.
Dependencies are inferred from the claim text.