Abstract: Apparatus (1) is provided for passing a fluid through a solid material (5). Apparatus (1) has an enclosure (2) with an upper part (7) in which the solid material is received. The solid material flows downward through one or more passages (13) which extend between end walls (11 and 12). Opposing sides of the or each passage are formed by side plates (14, 15) of fluid inlet and outled ducts (9, 10). The side plates are perforated so that fluid can pass transversely through the solid material flowing through each passage. The inlet and outlet ducts (9 and 10) have inlet parts (16 and 17) respectively, outside the enclosure. Solid material arrives at a lower part (8) of the enclosure and then leaves the enclosure. The apparatus (1) can be made compactly for the degree of fluid/solid contact provided. It is applicable to many applications such as drying of solids, heat exchange between fluids and solids, dust removal from gases, chemical reactors and humidifying/dehumidifying of fluids.

Abstract: Apparatus (1) is provided for passing a fluid through a solid material (5). Apparatus (1) has an enclosure (2) with an upper part (7) in which the solid material is received. The solid material flows downward through one or more passages (13) which extend between end walls (11 and 12). Opposing sides of the or each passage are formed by side plates (14, 15) of fluid inlet and outled ducts (9, 10). The side plates are perforated so that fluid can pass transversely through the solid material flowing through each passage. The inlet and outlet ducts (9 and 10) have inlet parts (16 and 17) respectively, outside the enclosure. Solid material arrives at a lower part (8) of the enclosure and then leaves the enclosure. The apparatus (1) can be made compactly for the degree of fluid/solid contact provided. It is applicable to many applications such as drying of solids, heat exchange between fluids and solids, dust removal from gases, chemical reactors and humidifying/dehumidifying of fluids.

Abstract: An assembly may comprise a nursing bottle, a teat, the teat having a flange with a sealing surface, and a retaining cap for releasably retaining the teat to the bottle. The retaining cap may move in a direction to act on the flange to press the sealing surface of the flange into sealing engagement with a wall of the nursing bottle in a direction substantially parallel to the direction of movement of the retaining cap, to form a flap valve. The flange of the teat may have a resilient skirt dependent therefrom which provides the sealing surface of the flap valve.

Abstract: This invention provides a connector for coupling a male and a female component, the connector including a member for locating the female component with respect to the male component and a locking member for coupling the female component to the male component. The locking member rotates with respect to the locating member in order to provide for the coupling and uncoupling of the components.