Dispensing – Processes of dispensing
Patent
1990-10-16
1992-06-09
Huppert, Michael S.
Dispensing
Processes of dispensing
22240214, 22240216, 141 20, B65D 8344
Patent
active
051199700
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a valve device for an aerosol container.
The invention also relates to a method of utilization of such a device.
Conventional aerosol dispensers generally comprise a container under pressure provided with a valve device fixed on its nozzle neck, the device being intended both for filling and dispensing of the active product. A valve device of this kind is described, for example, in U.S. Pat. No. 3,096,003.
In numerous cases, a known valve device of this kind does not satisfy the user's requirements. This is the case, for example, when an aerosol dispenser is used to dispense a deodorizer. On the one hand the user would like to obtain an immediate and controlled appreciable deodorizing effect at the time he so requires by simple manipulation of the dispenser. On the other hand, he would like the deodorizing effect to be kept at a desirable level over a relatively long period without his having to take any action for the purpose.
These desirable effects cannot be obtained with the known valve devices. An appreciable and immediate deodorizing effect at the start of the use Of the dispenser is impossible unless the user wishes to carry out a relatively inconvenient manipulation of the valve device by himself holding the dispenser valve open by application of pressure to a push-button or by actuating the push button several times in succession until he obtains the required deodorizing effect. It is not possible to obtain a controlled deodorizing effect with a conventional valve device because the user does not have the means of accurately determining the volume of deodorizing product delivered.
With the known valve devices it is also impossible to maintain a deodorizing effect for a varying length of time without the user's active participation.
The invention is based on the problem of overcoming the limitations of the known valve devices by proposing a new valve device whereby the above-mentioned desirable effects can be achieved.
To this end, according to the invention, the problem is solved by a valve device for an aerosol container, such device being characterised in that it comprises:
a) a standard valve for an aerosol container,
b) a closure member adapted to hold the standard valve open or closed selectively,
c) a unidirectional valve connected on one side to the standard valve and on the other side to a conduit adapted to be connected to a plunger tube adapted to connect the valve device to the interior of the aerosol container, and
d) means allowing a continuous flow of fluid from the container through the plunger tube and the conduit, around the unidirectional valve, and through the standard valve to atmosphere while the standard valve is open; inserted between the standard valve and the conduit.
The advantages provided by this invention consist essentially in that it enables the following objectives to be achieved simultaneously:
At the moment the user opens the standard valve by actuating the cap he obtains a relatively high initial rate of flow defined substantially by the volume of the hollow spaces of the connecting means forming part of the valve device. The user can, for example, thus obtain an immediate and controlled appreciable deodorizing effect at the instant he wishes to start using the dispenser, and this is achieved with a simple manipulation comprising opening the cap of the standard valve.
After the initial relatively high rate of flow, a relatively low continuous rate of flow is provided by the means which allow a continuous flow of fluid from the container. By keeping the closure member of the standard valve in the open position the user can thus also obtain a deodorizing effect which is kept at a desirable level over a relatively long period of time without his having to take any action.
An impregnation element disposed at the base of the closure device allows a non-volatile part of the active product to be collected where applicable. This impregnation element can, for example, thus produce a persistent deodorizing effect and act as a static deodorizer.
In
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Arieh Simon
Courvoisier Guy
Souliere Pierre
Givaudan Corporation
Huppert Michael S.
Huson Gregory L.
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