Patent ID: 8272525

Claim:
A lip-openable lid for use in connection with a cap for a container, the cap having a skirt and an inwardly extending ledge that forms a valve seat and defines an opening, the lid comprising: a gasket having an upstanding lip-engageable wall, said wall having a diameter and height that allows it to fit upward through the opening and beyond the ledge, a central panel radially inward of said wall, said central panel made of a flexible elastomer; and a flange extending outward from said wall and being engageable with said valve seat, said flange including rigidifying material having an annular ring; a rigid support that supports said central panel of said gasket, said support having a base, a central section connected to said base, and liquid flow openings extending through said support, said base being sustainable by a surface of the cap or the container and, when so sustained, said support being capable of positioning said upper surface of said flange of said gasket against said valve seat of said cap; and means for securing said central panel of said gasket to said central section of said support, wherein said flexible elastomer flexes and stretches to allow a portion of said flange to be displaced from said valve seat when lip pressure is applied against an adjacent portion of said wall of said gasket.