Abstract: A multi-chamber substance containment apparatus including a bottle, a spherical hollow member and a housing. The bottle includes an opening surrounded by a flange which has a spherical inner surface formed to receive the hollow member. The hollow member includes a lower opening and an upper opening. The housing is adjustably connected to the bottle to bias the hollow member against the spherical inner surface of the flange, thereby creating a seal around the opening of the bottle. In a closed position, a portion of the hollow member blocks the opening of the bottle. In an open position, the hollow member is rotated into an upright position such that the opening of the bottle and the lower opening of the hollow member are aligned to form a passage between an interior of the bottle and an interior of the hollow member.

Abstract: A multi-chamber bottle includes an opening surrounded by a flange which has a spherical inner surface formed to receive a hollow member. The hollow member includes a lower opening and an upper opening. The housing is adjustable to bias the hollow member against the spherical inner surface of the flange, to seal around the opening. When closed, a portion of the hollow member blocks the opening. When open, the hollow member is in an upright position such that the opening of the bottle and the lower opening of the hollow member are aligned. A method for mixing two substances includes disposing an amount of one substance in the bottle, adjusting the hollow member to block the opening of the bottle, and disposing an amount of another substance in the hollow member. To mix the substances, the hollow member is rotated into the open position and the apparatus is shaken.

Abstract: A storage container for storing powdered baby formula consisting of a first opening mated with a baby bottle and a hollow member rotatably disposed in the container. A wall of the hollow member provides a waterproof seal between the interior of the hollow member and the baby bottle when the hollow member is rotated into a first position. The hollow member defines a second opening which aligns with the first opening when the hollow member is rotated into a second position. The container also has a second open end for mating to a nipple. The container is used to store a pre-measured amount of powdered formula and the baby bottle is used to store a pre-measured amount of water. When in the first position the wall of the hollow member prevents contact between the powdered formula and the water. At a desired time, the hollow member is rotated to the second position to allow the water and powdered formula to mix, thereby producing liquid baby formula.