Patent ID: 8459450

Claim:
A formula bottle comprising: a generally cylindrical liquid chamber having a closed end, an open end, an inner surface and an outer surface; a generally cylindrical formula chamber connected to said liquid chamber, said formula chamber having a first end, a second end, an inner surface and an outer surface; a first sealing means forming a seal between said liquid chamber and said formula chamber, wherein said first sealing means further comprises: a first seal, wherein said first seal further comprises: a flexible body having a lower end and an upper end; a plug disposed at said lower end and of said body mounted in said open end of said liquid chamber; a shoulder attached to said upper end of said body; a membrane attached to said body; and an opening in said membrane, whereby, said shoulder moves axially with respect to said plug when said liquid chamber is rotated with respect to said formula chamber; and a sealing plate; a bottle collar securing a nipple to said formula chamber; and a second sealing means forming a seal between said formula chamber and nipple.