US Patent 10259620 Lid assembly for a container

A lid assembly for a container includes a seal assembly coupled to a base portion, and the seal assembly includes an intermediate arm pivotably coupled to the base portion and an engagement portion disposed adjacent to a second end. The seal assembly also includes a plunger arm pivotably coupled to the intermediate arm and a seal member disposed on the plunger arm. Displacing a button member coupled to the base portion actuates the seal assembly from a closed first position in which the seal member seals a fluid aperture formed in a spout of the base portion to an open second position in which the fluid aperture is not sealed.