초록 ▼

A check valve assembly is disclosed comprising an upper housing section having an inlet port, a first outer rim portion and a platform section adjacent the outer rim portion, and a lower housing section having an outlet port and a second outer rim portion, the second rim portion extending adjacent t

A check valve assembly is disclosed comprising an upper housing section having an inlet port, a first outer rim portion and a platform section adjacent the outer rim portion, and a lower housing section having an outlet port and a second outer rim portion, the second rim portion extending adjacent the first rim portion and abutting the platform portion when the upper and lower housing sections are melted together, the first rim portion maintaining the melted portions of the upper and lower housing sections within the housing, the upper and lower housing sections being configured to facilitate the melting process. The check valve assembly also comprises a valve seat, which is mounted between a seating ring on the upper housing section and a platform portion on the lower housing section, valve closure support means, and valve closure means for providing for the selective flow of fluid into the housing between the inlet port and the outlet port, the valve closure support means having a central post with tapered sides and a radiused base corresponding to a radiused section and tapered aperture in the valve seat, and a sealing ring to provide for sealing engagement between the valve seat and the valve closure support means.

대표청구항 ▼

A valve assembly comprising: a housing having an upper housing section and a lower housing section; an inlet port extending through said upper housing section; an outlet port extending through said lower housing section; said upper housing section including a first axially downwardly extending outer

A valve assembly comprising: a housing having an upper housing section and a lower housing section; an inlet port extending through said upper housing section; an outlet port extending through said lower housing section; said upper housing section including a first axially downwardly extending outer rim portion and a platform portion inwardly adjacent the base of said first outer rim portion; an axially downwardly extending inner annular seating ring inwardly adjacent said platform portion of said upper housing section and spaced from said first outer rim portion, said seating ring including a chamfered portion at the end of said seating ring and spaced from said platform portion to enhance the transfer of acoustic energy for sonic welding; a disk-like valve seat having an annular outer portion against the end of said seating ring and spaced below said chamfered portion; said lower housing section including a second axially upwardly extending outer rim portion of less diameter than said first outer rim portion; said second outer rim portion extending upwardly between said first outer rim portion and said seating ring to about said platform portion when said upper and lower housing sections are joined to secure said valve seat against the end of said seating ring and form said housing, and to thereby form an annular space between the side of said second outer rim portion and said chamfered portion at the outside annular portion of said valve seat, with said annular space being located away from said platform portion and adjacent said valve seat annular outer portion; said annular outer portion of said valve seat and the end portion of said seating ring being joined by melting and fusing together; and, said second outer rim portion and said platform portion being joined by melting and fusing the second outer rim portion and the platform portion together, with the first outer rim portion of said upper housing section maintaining melted portions of said second outer rim portion and said platform portion within said upper housing section to prevent external formation of fusion burrs.