There are many different designs for drink carriers, but they commonly include relatively deep indentations, holes, or compartments into which the cups are placed. This keeps the drinks from falling over during transport, and distinguishes drink carriers from cafeteria trays, though both may be used to carry both drinks and food.
WIPO PUBLISHES PATENT OF HUHTAMAKI FOR "CUP CARRIER WITH THUMB HOLDS AND CURVED STABILIZING WALLS" (AMERICAN INVENTORS)
Nov 28, 2011; GENEVA, Nov. 28 -- Publication No. WO/2011/146416 was published on Nov. 24. Title of the invention: "CUP CARRIER WITH THUMB HOLDS...