Patent ID: 6834677
Filing Date: 2004-12-28
Classification: F16K,Y10T

Abstract:
An over-molded fluid control valve, comprising:a rigid substrate having an opening defined therein; a unitary valve structure fabricated of an elastomeric material, said elastomeric material over-molded onto arid over at feast a portion of the rigid substrate during a molding process to define the unitary valve structure including at least one valve portion extending over said opening, the valve portion normally closed to prevent fluid flow, the valve portion movable in response to a differential fluid pressure to allow fluid flow, wherein said valve structure includes a tapered duckbill portion having a slit formed at a distal end, and wherein the slit is normally closed against fluid flow, said slit opening in response to said differential fluid pressure, and wherein the rigid substrate has first and second opposed surfaces, and first end second layers of said elastomeric material are over-molded over said first and second opposed surfaces.