Patent ID: 7644843

Claim:
A flip-top closure with a reverse taper dispensing orifice seal comprising: a closure body having a lid hingedly connected thereto; said closure body having a top wall, said top wall having a top surface with a raised elongated spout projecting therefrom, said raised elongated spout having an opposed ovalized outer surface and an opposed ovalized inner surface defining an elongated orifice through said top wall; said outer surface of said spout is substantially vertical; said raised elongated spout including a chamfered edge on said inner surface of said spout; said lid having a depending seal and a depending plug, said depending seal positioned to engage said outer surface of said spout when said lid is closed upon said closure body, said seal having a first end adjacent said lid and a distal end opposite therefrom; said distal end of said seal having an inner surface and an outer surface, each of said inner surface and said outer surface of said distal end angularly positioned at an acute angle relative to the vertical axis of said orifice through said top wall, wherein said outer surface of said distal end is smaller in diameter than an outer surface of said first end of said seal and said inner surface of said distal end is smaller in diameter than an inner surface of said first end of said seal; said acutely angled distal end tapering from a first thickness to a second thickness in a direction away from said first end of said seal, wherein said first thickness is larger than said second thickness; said acutely angled distal end of said seal creating a line contact seal about the periphery of said substantially vertical outer surface of said raised elongated spout; said plug having a first length and said seal having a second length wherein said first length is greater than said second length; and said plug engaging said inner surface of said closure raised elongated spout and urging said outer surface of said raised elongated spout outwardly against said seal distal end enhancing said line contact seal about the periphery of said raised elongated spout when said lid is closed upon said closure body.