VENTED BABY BOTTLE

摘要

Baby bottles (1, 80, 110, 160) can have a single container (12, 84), or two containers (12, 60, 82, 84, 112, 114, 162, 164) to create a space for thermal isolation, as selected by the user. The baby bottle can be vented to allow air to enter the bottle through a passageway (41) as liquid is removed. A filter (44) and one-way valve (46) can be provided in the passageway. The passageway can be formed by radially aligning a vent opening in a top cap (24) with a vent opening in a nipple flange (37), or by providing a channel (48) in the top cap (18, 47) which is always in radial alignment with both the top cap vent opening (24) and the flange vent opening (37).