Patent ID: 7731066
Filing Date: 2010-06-08
Classification: B65D

Abstract:
1. A closure for a dispensing container for viscous paste products comprising: a valve having a peripheral flange, a curved convexly shaped portion, and at least one slit in the curved convexly shaped portion, the peripheral flange surrounding the curved convexly shaped portion; a base unit comprising a base surface having a base aperture, a cylindrical section surrounding the base aperture and having structure to attach said base unit to the container; an upper unit attached to said base unit and having an upper unit surface with an upper aperture in said upper unit surface, said base aperture and said upper aperture in alignment when said upper unit is attached to said base unit, said peripheral flange of the valve supported by an upper surface of said base unit and a lower surface of said upper unit, said upper unit having a lid having a top surface, an inner surface and a depending side surface; a first seal depending from said inner surface to contact the convexly shaped portion of said valve only between a peripheral edge of said valve and the at least one slit when the lid is closed; and a second seal depending from said inner surface contacting the convexly shaped portion of said valve in the area of the at least one slit above the contact by the first seal when the lid is closed to further maintain said valve closed.