Dispensing – With discharge assistant – Fluid pressure
Patent
1980-09-19
1985-05-28
Rolla, Joseph J.
Dispensing
With discharge assistant
Fluid pressure
222399, B05B 1106
Patent
active
045195285
DESCRIPTION:
BRIEF SUMMARY
The present invention has for its object a liquid spray head adapted to be connected to a compressed-gas reservoir and to be secured to a vessel containing the liquid to be atomized.
It is known to use a compressed gas in the same vessel as the liquid in order to atomize this liquid in the form of an aerosol. The gas utilized is fluorinated hydrocarbon known more particularly under the trademark Freon. Since the dangers inherent to the use of this gas have been acknowledged, many research works have been undertaken for finding a substitute gas. However, for certain applications, even such a gas, if it exists, could not be utilized validly. This is the case notably of perfumes of which the properties are destroyed when they are mixed with a compressed gas.
The present invention has for its scope of providing a spray head adapted to utilize any neutral gas other than Freon and capable of maintaining a controlled low pressure within the vessel containing the liquid to be atomized.
The spray head according to the invention is characterized by the fact that it consists of a body in which two similar superposed and coupled valves are mounted, each valve being provided with a spring and a hollow, movable control shank, known per se, acting both as an outlet conduit for the valve, the upper shank being rigid with a control knob actuatable by pressure and provided with a nozzle connected to the conduit of the hollow shank, a pressure-reducing and regulating device and a safety device, the body having a first inlet orifice adapted to connect the compressed-gas reservoir to the lower valve, an outlet orifice adapted to connect the pressure-reducing device to the vessel, a second inlet orifice adapted to connect the vessel to the upper valve and a conduit connecting the lower valve to the pressure-reducing device. With this head it is possible for instance to utilize a reservoir containing a gas compressed to 10 bars or more and to atomize the liquid with a controlled and regulated pressure of 0 to 3 bars or more, this low pressure being adjustable and maintained at an accurately defined value by means of the pressure-regulating pressure-reducing device. The valve coupling ensures the proper operation, without any loss, of the head and permits enclosing the complete assembly of the head components in a low volume cylindrical body adapted to be mounted on or in a vessel or bottle of standard size. The reservoir may be secured under the head and introduced therewith into the vessel or secured around the head externally of the vessel. The body may furthermore comprise means for plugging same to a vessel also enclosing the compressed-gas reservoir. The vessel may be made of metal as well as of glass.
The spray head according to the invention may be used for atomizing any liquid.
The attached drawing illustrates, by way of example, a form of embodiment of the invention.
FIG. 1 illustrates a top plan view of a spray head in accordance with the invention.
FIG. 2 illustrates a section thereof, taken along the line II--II of FIG. 1.
FIG. 3 illustrates a section taken along the line III--III of FIG. 1.
FIG. 4 illustrates a fragmentary sectional view thereof, taken along the line IV--IV of FIG. 1.
FIG. 5 illustrates a first mounting of the head.
FIG. 6 illustrates a second mounting of the head.
FIG. 7 illustrates a third mounting of the head.
FIG. 8 illustrates a fourth mounting of the head.
The head comprises a cylindrical body 1 in which a set of valves 2, a pressure-regulating pressure-reducing device 3 and a safety device 4 are mounted.
The valve assembly 2 is illustrated in FIG. 2. It consists of a pair of identical valves, superposed and controlled by means of a single push-button 5. These two valves are of the type utilized in aerosol cans. The upper valve comprises a valve body 6 provided with a pair of O-ring seals 7 and 8 enabling it to slide in a bore while warranting a sufficient fluid-tightness in the bore section underlying this body 6. Screwed in this body 6 is a gland 10 retaining a sealing packing 11 of syntheti
REFERENCES:
patent: 2973885 (1961-03-01), Ferguson
patent: 3315844 (1967-04-01), Klasson et al.
Adams Bruce L.
Burns Robert E.
Favrot Guy
Handren Frederick R.
Lobato Emmanuel J.
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