Fluid sprinkling – spraying – and diffusing – Including supply holder for material – Resilient holder wall
Reexamination Certificate
2002-02-15
2004-06-29
Evans, Robin O. (Department: 3752)
Fluid sprinkling, spraying, and diffusing
Including supply holder for material
Resilient holder wall
C239S302000, C239S323000, C239S600000, C222S092000, C222S107000, C222S206000, C222S541600
Reexamination Certificate
active
06755357
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a device for packaging a fluid product and dispensing it in the form of a spray. More specifically, the invention relates to a small or miniature spray, preferably a disposable one, designed for packaging cosmetic products. The spray device can be particularly advantageous for fragrances or scents, especially with products to be provided in the form of samples. The product is preferably liquid but may also be in the form of a powder, particularly powders having small particle sizes.
BACKGROUND OF THE INVENTION
Discussion of Background
Dispensers for fluids are described in patent applications FR-A-2 778 639, EP-A-0 761 314, and FR-A-2 443 980, and in patents U.S. Pat. No. 3,897,005 and U.S. Pat. No. 3,412,907. These devices primarily suffer from at least one deficiency or problem associated with the cost of manufacture, the ease of use, or the quality of the spray the device is capable of producing.
Particularly with respect to samples that are not generally intended for sale, the cost of manufacture for the packaging/dispenser needs to be as low as possible. For such samples it is desirable to utilize packaging and dispensing devices in which the components can be easily produced in large quantities and in which the components can be easily assembled. Furthermore, the devices need to be able to generate a good and uniform or consistent spray.
One possibility for producing such packagings at the lowest possible cost could include producing the container in the form of a pod of the type commonly used for packaging certain physiological serums, ointments or make-up removal products. Such a pod is made of a single piece with a spray orifice which is opened by tearing off an end piece, particularly by twisting the end piece about the axis of the orifice. Such a device may be filled via an open end of the container. The end is then closed by welding. However, this solution suffers from two major disadvantages. The first stems from the fact that, upon opening, the orifice resulting from tearing-off of the end piece by twisting has an imprecise or inconsistent shape and/or size. As a result, the spray that can be obtained through such an orifice, when the compressible walls of the container are pressed, has characteristics which significantly vary from one device to another. Often, the cross section of the orifice is such that it is impossible to generate a spray, and the product can merely run out in somewhat large drops or as a continuous stream.
In addition, the welding operation to close the container after filling, particularly in the case of a highly volatile product such as a scent, can be problematic. There is a risk that the product will evaporate, deteriorate, or even catch fire due to the heat which can be associated with welding to seal the opening. Such problems can occur with a configuration as described in U.S. Pat. No. 2,080,864 which describes a device for spraying an insecticide. This device is in the form of a pyramid-shaped sachet, inside of which there extends a tube in communication with the container via lateral openings. One end of the tube has an opening facing a spray orifice of the sachet. The other end is closed and secured, via a spring, to an element intended to form an attached bottom of the sachet so as to seal its opposite end to the spray orifice. Thus, it is not until the opening opposite the spray orifice is closed that the element secured to the tube isolates the product from the opening. Such a configuration thereby precludes any closure operation involving a supply of heat, for the reasons discussed above.
SUMMARY OF THE INVENTION
In view of the foregoing, it is an object of the invention to provide a spray device which completely or partially solves the problems discussed above.
In accordance with one object of the invention, a spray device is provided which is easy to produce in large quantities at a low cost.
In accordance with another object of the invention, a device is provided which makes it possible to generate a spray, the quality of which is both satisfactory and more consistent or reproducible from one device to another.
In accordance with a further object, a device is provided in which the filling orifice can be sealed hot, while the risk of causing appreciable evaporation, deterioration, or fire/combustion of the product is reduced.
Other objects and advantages will become apparent in the detailed description herein.
A device for spraying a fluid product in accordance with the invention includes a container with at least one compressible wall. A first end of the container delimits a first opening which is sealed after the container is filled with a product. A second end of the container includes a closed portion which is capable, prior to the first use of the device, of being opened so as to uncover or provide a second opening through which the product can be dispensed. The device further includes an insert arranged inside of the container, with the insert delimiting a spray orifice in communication with the product and arranged to face the second opening. In addition, the insert is configured to isolate the product from the first opening prior to the sealing thereof. As used herein, a “fluid product” includes a liquid or a powder.
According to a preferred embodiment of the invention, the portion of the insert which is intended to isolate the product from the first opening lies a non-zero axial distance away from the first opening, thus making it possible to isolate the product from the opening and then to seal the latter. Such is not the case if the portion intended to isolate the product from the opening also serves to seal the opening. Thus, in accordance with the invention, a portion of the insert isolates the product from the first opening so that upon sealing (such as by welding) of the first opening, the product is isolated from the location being sealed.
In accordance with one aspect of the invention, a single insert element can be used to isolate the product from the first opening and at the same time, to provide the spray orifice, whose dimensions can be chosen as precisely as possible. As a result, the quality of the spray meets expectations and is more consistent or constant from one device to another. Furthermore, prior to the closure operation, the product and the filling orifice are isolated which, if necessary, allows the sealing or closure of the first opening to be performed hot, while reducing the risk of the product evaporating, deteriorating or combusting.
In accordance with another advantageous aspect, the device can be configured such that it is possible to produce the container as a single piece, including the element for closing the dispensing orifice. The cost of manufacture is thereby reduced. In addition, sealing of the closure is more efficient or optimal.
Preferably, and unlike the configuration described in U.S. Pat. No. 2,080,864 mentioned above, after the first opening has been sealed, the spray orifice is in a fixed axial position inside the container. This arrangement can provide far better precision in the spraying of the product. In addition, the arrangement is substantially easier to assemble, and the cost of the device can be appreciably reduced.
Preferably, the first end of the container lies opposite to the second along a longitudinal axis X of the device. This aligning of the insert along the axis X of the device to a large extent makes the device according to the invention easier to assemble and fill.
According to a preferred form of the invention, the insert forms an inner volume in communication with the spray orifice. In addition, an outer volume, in communication with the inner volume, is delimited between the insert and the container. In accordance with an example of a preferred form of the invention, the insert can be configured in the form of a tubular element, a first end of which is closed and a second end, at an end of the tube opposite to the first, of which has the spray orifice passing through it. In addition, at least on
Bethune Alain
Duqueroie Florent
Evans Robin O.
L'Oreal
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