초록 ▼

An infant\s feeding bottle employing a valve to assure approximately atmospheric pressure within the bottle during feeding, the valve and valve stem being of like material and of simple unitary construction whereby to avoid numerous problems such as rust, sticking, and development of unsanitary cond

An infant\s feeding bottle employing a valve to assure approximately atmospheric pressure within the bottle during feeding, the valve and valve stem being of like material and of simple unitary construction whereby to avoid numerous problems such as rust, sticking, and development of unsanitary conditions associated with other valves under like conditions of use.

대표청구항 ▼

A feeding bottle assembly comprising a bottle having a bottom with a recessed central portion, said recessed central portion having a central passageway and at least one vent aperture to one side of said central passageway, a normally closed valve assembly including a valve seat encircling said cent

A feeding bottle assembly comprising a bottle having a bottom with a recessed central portion, said recessed central portion having a central passageway and at least one vent aperture to one side of said central passageway, a normally closed valve assembly including a valve seat encircling said central passageway and vent aperture, and a unitary valve and valve stem of like material installed in said recessed area with said valve engaging said valve seat and said stem secured in said central passageway under tension to normally urge said valve into such engagement with said valve seat and with just sufficient force to enable a differential pressure, created across said valve during feeding of an infant from said bottle, to momentarily lift said valve from engagement with said valve seat to admit atmosphere and minimize such differential pressure.