Abstract: The invention relates to a device for equalizing the pressure inside a milk-containing baby bottle, by bottom venting, during suction from the nipple. The device is positioned inside the cover which closes the bottom of the baby bottle. The cover comprises a dome-shaped element axially emerging from said bottom wall, which has at least one hole located in its cusp-shaped end and in communication with the environment outside the cover. A diaphragm member with a flexible region is placed above said dome-shaped element of the cover and, when the device is mounted in the bottle, is arranged axially above said hole. A central disk-shaped element is provided in the flexible region and has at least one cut that opens toward the hole and hence toward the exterior of the bottle, as milk is being sucked, and equalizes the pressure inside the bottle.

Abstract: A nut for ensuring compatibility of a nipple having an anti-colic valve affixed to a baby bottle having a bottom vent and a mouth; the nut comprises a flange which has a central opening for receiving the nipple extending therethrough, the central opening has an edge configured to engage in an annular groove of the nipple, the nipple also comprises a flange; the nut comprises means for inhibiting the anti-colic valve which comprise: a first annular rib formed on the inner surface of the flange, which is configured to abut the flange of the nipple between the anti-colic valve and the edge of the central opening of the flange, a second rib, concentric with the first rib, which is configured to provide a hydraulic seal between the flange of the nipple and the mouth of the baby bottle, a depression interposed between the first rib and the second rib, which is configured to abut against the anti-colic valve of the nipple when the nut and the nipple are coupled together and are applied to a baby bottle to inhibit

Abstract: A method and apparatus in which air is liquefied and stored for later energy recovery during which the liquid air is pumped to high pressure, heated and then expanded to recover the energy. During the recovery of energy, the pumped liquid air is heated within a regenerator that stores the refrigeration within the liquid air. During the liquefaction of the air, part of the refrigeration required is obtained from the refrigeration stored in the regenerator.