Abstract: A device for dispensing the contents of a receptacle that is pressurized or that has a pump, includes a dispensing head forming a discharge orifice. A shutter is slidable in the head for opening or closing the outlet orifice. The shutter is slidably mounted in a bore of the dispensing head which communicates with the inside of the receptacle. The device also includes a control member for actuating the shutter to open the outlet orifice and simultaneously operating an actuating member (e.g., a valve or pump) of the receptacle for supplying the contents to the bore. The control member is pivotable about an axis and includes portions operably connected to the dispensing head and shutter. The actuating member is spring-biased to a rest position. Upon returning to its rest position, the actuating member displaces the dispensing head and control member to their rest positions.

Abstract: A collapsible and inflatable piston usable for containers and other receptacles for packaging requiring fluid-tight separation of the packaged product and the propellant by the piston, particularly for aerosol containers, the piston being formed from elastic material impermeable to gases and to liquids and includes a hollow cylindro-frustoconical vessel having a frustoconic cap closed at the top and extended by a cylindrical part open at the base. This cylindrical part has external sealing ribs mating a container in fluid-tight manner.