US Patent 8245870 Container cap with tether

A drinking container has a bottle with an open top, a cap assembly attachable to the bottle to cover the open top, and a drinking spout with a top opening on the cap assembly. A spout cover is removably fitted on the top opening of the drinking spout. A flexible tether is connected to the spout cover and to the cap assembly or the bottle. The tether is looped unto itself permitting the spout cover and a portion of the tether to be extended to reach the top opening and to be retracted withdrawing the spout cover to a position remote from the drinking spout.