Patent ID: 7543717

Claim:
A wineglass comprising: bowl with a central axis and a bottom region symmetrically disposed thereabout; and a protrusion having, a central core which attaches to said bottom region of said bowl and extends along said central axis up into said bowl, said central core terminating in a core free end, and a ledge attached to said central core and positioned such that at least a portion of said ledge is configured so as to provide a wine-supporting ledge surface that is intermediate between said central core free end and said bottom region of said bowl, wherein said ledge forms a single spiral ramp which encircles said central axis, said single spiral ramp extending between peripheral edge and a downward-directed riser, said peripheral edge generally decreasing in radius from the central axis as said single spiral ramp rises above the bottom region of the bowl, and said riser having a riser depth d extending downward from said peripheral edge to terminate at another wrap of said spiral ramp so as to form a backed step.