Dispensing – With discharge assistant – Fluid pressure
Patent
1993-10-14
1995-08-08
Kashnikow, Andres
Dispensing
With discharge assistant
Fluid pressure
22240211, B65D 8300
Patent
active
054391482
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention relates to an aerosol provided with a container for a medium which is under pressure, and also a spray nozzle which is connected to a medium supply device of the container, and with which the medium can be sprayed after the opening of a valve provided between container and supply device.
BACKGROUND OF THE INVENTION
Such aerosols are generally known. They can contain all kinds of liquid media. In particular, however, the invention relates to aerosols which are suitable for paints, lacquers and surface coating products such as undercoating, Bittac, ML etc.
The problem occurring with paint aerosols is that they are widely used for producing graffiti. Since the current types of paint which are applied with paint aerosols are weatherproof and wind-resistant, graffiti cause great damage and nuisance. Daubed walls, traffic signs, advertisement boards, window panes, panels, shopfronts, letterboxes, defaced bus stops and street maps, and housefronts and trains covered in graffiti are a great nuisance. Moreover, graffiti are often accompanied by dirt and dilapidation.
No good solution has been found so far to the graffiti problem. Although paint aerosols are quite expensive, they are still used on a large scale by young people in particular for producing drawings, names and the like. All this is helped along by the fact that in many large chain stores the paint aerosols are, as it were, there for the taking. It has in fact been found from recent research that a substantial percentage of the paint aerosols used for producing graffiti are stolen. In practice, little or nothing can be done to prevent the theft of paint aerosols. However, if the group of young people responsible for producing graffiti had difficulty in obtaining paint aerosols, we would already be part of the way towards solving the problem.
SUMMARY OF THE INVENTION
The object of the invention is therefore to make theft of such aerosols less attractive. According to the invention, this is achieved by providing a dispensing system for a medium which is under pressure, consisting of a separately provided spray-nozzle as well as of a container which contains said medium, which spray-nozzle is adapted to be fixed irreversibly to the medium supply device of said container, and whereby the parts of the spray-nozzle and/or of the supply device determining the flow connection have (a) weakened portion(s) which is (are) rupturable upon an attempt to remove said spray-nozzle from the container.
The containers can now be offered for sale without spray nozzle. The spray nozzles are kept separate from the containers, for example at a checkout, until the moment of purchase. Once the sale has been concluded, the purchaser is also given the appropriate spray nozzle. Only then does the purchaser have an aerosol which is actually usable. Anyone taking an aerosol and not paying for it at the checkout, and thus obtaining it without a spray nozzle, can do little with the container.
Since the spray nozzle can also be fixed irreversibly to the supply device, it is not possible to remove the spray nozzle from one container and fit it on another.
Taking the aerosol according to the invention without paying for it is now considerably less attractive, since there is no spray nozzle on it. The theft of aerosols can be prevented more effectively in this way.
As soon as any attempt is now made to remove the spray nozzle from the container, the flow connection becomes damaged. This means that, after opening of the valve, the contents of the container, such as paint, are no longer guided correctly through the spray nozzle, but can escape through the damaged place. In that case the aerosol can no longer be used properly, since the paint can gush out from under the nozzle.
According to a first possibility, the fixing means can contain a weakened part. In that case these fixing means are damaged when an attempt is made to remove the spray nozzle from the container.
The supply device can be a supply tube with a number of notches, while the spray
REFERENCES:
patent: 3187963 (1965-06-01), Anderson
patent: 3580431 (1971-05-01), Kuffer et al.
patent: 3942725 (1976-03-01), Green
patent: 5277340 (1994-01-01), Van Brocklin
patent: 5285776 (1994-02-01), Betram
B.J. Driessen & Zn. B.V.
Derakshani Philippe
Kashnikow Andres
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