US Patent 7581640 Reusable beverage cup with counter

The present invention discloses a beverage cup that comprises a cup body, and a lid. The lid comprises a hinged plug insert, which covers the drinking port in the lid, a window and a counter means. The counter means comprises a disc that protrudes through the outer circumference of the lid in such a way that the user can rotate the disc. The disc is printed with symbols or numbers, one of which is visible at a time through the window in the lid. Different symbols or numbers on the disc are visible through the window as the disc is rotated.