Abstract:
A dispensing device for fluid substances, including a pushbutton in which a chamber is provided housing a piston, the piston being loaded by an elastic mechanism to urge a front projecting appendix thereof into a dispensing hole for the substance, to hence sealedly close the hole, the pushbutton presenting a seat enabling a hollow stem to be coupled therethrough through which the pressurized substance is fed to the device. In the chamber there is housed an at least partially cylindrical member in an interior of which the piston slides, in the member there being provided at least one passageway opening to the front of the piston and communicating with a bore of the stem when the device is positioned on the pump.
Abstract:
Fluid mixture which comprises at least one low-boiling liquid, and which during use generates a low vapour pressure, said mixture being dispensable by a manually operated dispensing pump mounted on a hermetically sealed container of this mixture. The low vapour pressure developed by the low-boiling liquid is such as to prevent a vacuum being created in the container interior when the mixture is dispensed by the pump, in order to allow correct pump operation.
Abstract:
A device for dispensing, by a manually operable pump, fluid substances contained in a deformable bag housed in a rigid container. The bag includes a mouth with a projecting flange with which the pump engages in coupling to the flange, and which causes the bag to be extracted from the container when the pump is separated from the container after the bag has been emptied.
Abstract:
Fluid mixture which comprises at least one low-boiling liquid, and which during use generates a low vapour pressure, said mixture being dispensable by a manually operated dispensing pump mounted on a hermetically sealed container of this mixture. The low vapour pressure developed by the low-boiling liquid is such as to prevent a vacuum being created in the container interior when the mixture is dispensed by the pump, in order to allow correct pump operation.