Dispensing – With discharge assistant – With movable nozzle interconnected therewith
Reexamination Certificate
1999-09-16
2001-08-14
Kaufman, Joseph A. (Department: 3754)
Dispensing
With discharge assistant
With movable nozzle interconnected therewith
C222S402100, C222S568000
Reexamination Certificate
active
06273300
ABSTRACT:
FIELD OF THE INVENTION
The invention relates to devices for attachment of distribution components on containers and more particularly to rings which can be screwed on, as well as to product distribution devices having such a fastening device.
BACKGROUND OF THE INVENTION
In order to attach distribution components, such as pumps or valves, on containers holding product which is to be distributed, a number of different techniques are available. Thus, it is possible to use a crimping cap which is intended to be crimped on the neck of the container. As an alternative, it is also possible to attach a distribution component by means of a fastening ring,.for example, a ring with tabs allowing it to be snapped on the neck of the container. Such a ring which can be snapped on is disclosed specifically in the document EP-0,359,605. According to yet another known technique, the distribution component is attached on the neck of a container by means of a ring which can be screwed on, the neck of the container having external threads which cooperate with the internal threads of the ring which can be screwed on. The invention relates more particularly to this last technique.
In the field of perfumery, but also in other fields, the containers, which can be produced out of any suitable materials, are however generally produced out of glass or sometimes metal. The use of screwable rings for attaching distribution components, pumps or valves presents a certain number of problems in the case of metal rings and particularly rings made of anodized aluminum.
On the one hand, because it is a matter of friction of a hard coating against a hard material, problems of irregularity of friction or seizing are created.
Moreover, the stresses are not very well distributed over the threads of the neck of the container, so that these threads risk being broken during assembly.
Furthermore, there is a risk of unscrewing of the ring in the case of vibrations, for example, during transport.
On the other hand, the size tolerances of the neck of the container, of the threads on the neck of the container or of the metal ring are very difficult to compensate for. Since the product distributors of this type are produced in very large numbers, said problems of tolerance compensation, which can appear during mounting of the ring on the neck of the container, prevent effective and economical mounting from the standpoint of time as well as cost.
The present invention therefore aims to provide a device for mounting of a distribution component on containers, such as a screwable ring, which does not have the aforementioned disadvantages.
SUMMARY OF THE INVENTION
The present invention therefore aims in particular to provide a metal fastening ring which can be screwed on, which essentially eliminates the problems of friction during screwing of the ring on the neck of the container.
The present invention also aims to provide a metal fastening ring which can be screwed on, which essentially eliminates the risk of breaking of the threads of the neck of the container during screwing of the ring.
The present invention furthermore aims to provide a metal fastening ring which can be screwed on, which does not risk coming loose accidentally because of vibrations and/or for which manual screwing/unscrewing is facilitated.
The present invention furthermore aims to provide a metal fastening ring which can be screwed on, which makes it possible to compensate for the manufacturing tolerances of the glass necks.
The present invention also aims to provide a metal fastening ring which can be screwed on, which is simple and inexpensive to manufacture and which makes it possible to limit assembly costs.
The invention therefore relates to a metal fastening ring which can be screwed on for attaching a distribution component, such as a pump or a valve, on a container which has a neck and which contains product to be dispensed, said ring having internal threads which cooperate with external threads provided on said neck of the container, said ring having a plastic material coating on the interior annular wall which has said threads.
This invention also relates to a product distribution device which includes a container, a distribution component, such as a pump or a valve, and a fastening device as defined above.
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Bergault Jacques
de Pous Olivier
Jumel Stéphane
Kaufman Joseph A.
Rockey Milnamow & Katz Ltd.
Valois S.A.
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