Patent ID: 7950541

Claim:
An apparatus for use with a drinking container for manually opening and closing the container, the apparatus comprising: a body being sealingly engageable with the container, the body comprising a stationary magnet and having an opening therethrough adapted to allow fluid communication between an interior of the container and a surrounding environment, the opening being proximate at least a first portion of the stationary magnet, at least a second portion of the stationary magnet being spaced from the opening; and a metal ball magnetically attracted to the stationary magnet in the body and being selectively, manually movable with respect to the stationary magnet between at least a first position on the body in which the ball seals the opening and a second position on the body, spaced from the first position, in which the opening is unsealed to allow a user to drink from the container, the ball being selectively, manually rollable by the user between the first position and the second position along at least a portion of the body, the first portion of the stationary magnet retaining the ball in the first position and the second portion of the stationary magnet retaining the ball in the second position.