Bottle with annular groove in its neck and cap

Abstract

An annular groove is formed around the top of a wine bottle having a pouring port formed at the foremost end thereof so as to allow a liquid contained therein to be poured through the pouring port. Specifically, the annular groove is formed around the boundary corner between a flange and a head portion of the top. Alternatively, the annular groove may be formed around the boundary corner between the flange and a neck portion. Otherwise, the annular groove may be formed around the outer surface of the flange. It is preferable that the annular groove has a V-shaped sectional contour. Alternatively, the annular groove may have a U-shaped sectional contour. Otherwise, the annular groove may have a square or rectangular sectional contour. It is preferable that depth D of the annular groove be within the range of 0<D<0.6 mm, and width B of the same be within the range of 0.3 mm.ltoreq.B.ltoreq.0.6 mm.

Dependencies are inferred from the claim text.