Patent ID: 8579132

Claim:
An anti-colic baby feeding bottle comprising: a bottle body comprising a bottle neck; a cap removably fastened to the bottle neck; and an elastic teat comprising a nipple portion comprising a fluid-dispensing through-hole and an annular base, an annular flange extending radially outwardly from the annular base, a lurality of apertures formed 360° around the annular flange, and an annular skirt depending from the annular base; wherein the annular flange is clamped between an annular top wall of the cap and a rim of the bottle neck, and the annular skirt is spaced radially inwardly apart from an inner surface of the bottle neck to define an annular passage comprising an outer end in air communication with the apertures and an inner end which is normally closed by biasing force of a free end of the annular skirt that presses against the inner surface of the bottle neck; wherein the annular skirt is generally cylindrical in shape; and wherein the inner surface of the bottle body against which the free end of the annular skirt presses is a radially inwardly bulging annular protrusion.