Abstract: Pressure regulating valve for controlling the pressure at which a pressurized propellant gas is injected into a container containing a liquid for driving said liquid out of the container, said valve comprising: A first and a second polymeric shells, the first shell comprising a gas inlet and outlet openings, and the second shell containing means for resiliency biasing. A polymeric membrane, clamped between the first and second shells, thus defining a first and a second chambers sealingly separated by the membrane. A joint between the first and second polymeric shells, strong enough to withstand the pressures reigning in either chamber and ensuring fluid tightness between the two chambers; wherein, all polymeric components of said pressure regulating valve are made of the same polymer class.

Abstract: A beverage dispensing apparatus is provided. The apparatus includes a container containing a beverage to be dispensed. Pressurizing means are provided for increasing the pressure in the interior of the container. A dispensing duct brings in fluid communication the liquid beverage contained in the container with the exterior environment and draws the beverage out of the container. The dispensing duct comprises a dispensing pipe opening to ambient via a valve, and a pressure reducing channel with an opening connecting in fluid communication the interior of the container with the dispensing pipe. The pressure reducing channel is disposed in a housing made of two half bodies joined together. Each body includes a matching open channel forming the closed pressure reducing channel upon joining. At least one of the half bodies is an integral part of either the container's closure or the chime.

Abstract: The invention is a closure for the aperture of a pressure driven dispensing container. The closure includes (a) an outer shell having a planar base including an outer first main surface and an inner second main surface. The base includes a dispensing aperture fluidly connecting the outer surface to the inner surface and receives a dispensing tube. An outer peripheral skirt juts out of the inner surface and seals the closure to the aperture of the container. The closure also includes (b) a flexible valve in contact with the inner surface located within the outer peripheral skirt and defining an interior passageway having a first opening at one end adjacent to and in fluid communication with the first dispensing aperture and having a second opening at the other end of the passageway, wherein the flexible valve is resiliently biased so that it naturally shuts and seals the second opening.

Abstract: Pressure regulating valve for controlling the pressure at which a pressurized propellant gas is injected into a container containing a liquid for driving said liquid out of the container, said valve comprising: A first and a second polymeric shells, the first shell comprising a gas inlet and outlet openings, and the second shell containing means for resiliency biasing. A polymeric membrane, clamped between the first and second shells, thus defining a first and a second chambers sealingly separated by the membrane. A joint between the first and second polymeric shells, strong enough to withstand the pressures reigning in either chamber and ensuring fluid tightness between the two chambers; wherein, all polymeric components of said pressure regulating valve are made of the same polymer class.

Abstract: Disclosed is a concentrator solar cell which guides concentrated sunlight to a solar cell. The concentrator solar cell has: a substrate which has a solar cell mounted thereon; a light guide member which is positioned in the top part of the solar cell in such a way that the lower end surface thereof faces the solar cell; and a support member which is provided across the upper part of the light guide member and is provided in a standing state on the substrate. The concentrator solar cell is a hermetically sealed structure due to the substrate, the light guide member, and the support member.