Special receptacle or package – For mixing – Means to manipulate without rupture
Reexamination Certificate
2000-02-22
2001-06-19
Foster, Jim (Department: 3728)
Special receptacle or package
For mixing
Means to manipulate without rupture
C215SDIG008
Reexamination Certificate
active
06247586
ABSTRACT:
BACKGROUND OF THE INVENTION
The invention relates to a two-component container, with two containers separate from each other and communicating with each other after a sealing plug has been ejected, each container comprising a chamber for receiving a component, with a thread on a neck of one container and a further thread joined to the other container, the threads meshing with each other, and one container can be screwed against the other container in such a way that the sealing plug is forced out of the mounting thereof.
In the case of known two-component containers of this type, in which a film is provided as a sealing means between the containers, materials with good barrier properties are used for producing the film in order to prevent diffusion between a peroxide present in one chamber and a hair dye in the other chamber. Sealing by way of a single sealing point results in insecure sealing, in particular during mass production of the two-component container.
A two-component container is known from FR-2610901, in which a component present in an upper container can be added to a component present in a lower container. For this purpose, the closure of the lower container is first pressed out downwards and the second closure arranged on the base of the upper container is then removed.
SUMMARY OF THE INVENTION
The object of the invention is to arrange a two-component container of the type described in the introduction in such a way that secure sealing is produced between the individual containers, and a simple and safe mixing of the components is achieved.
According to the Invention sealing plug comprises two individual stoppers, wherein the upper stopper is releasable upwards from a retaining member connected to the upper container, the lower stopper is removable downwards from a retaining member of an intermediate member by the resistance of the upper stopper, the intermediate member rests with a support on the upper edge of the lower container, and the intermediate member is provided with a separate ejection member acting against the upper stopper.
The two-component container according to the invention has the advantage that it is provided with a double sealing between the individual components, since each stopper performs a sealing action. The individual components are mixed in a simple manner by screwing in the lower container in the direction of the upper container. Mixing takes place safely in that first the lower stopper and then the upper stopper is ejected. The lower stopper is ejected by the upper stopper, and the latter is ejected in turn by the ejection member.
The lower stopper is ejected when the retaining members are still relatively far from each other after a slight rotation of the lower container, if the upper stopper has a wall area extending parallel or substantially parallel to an outer wall of the container and a central area resting on the lower stopper. Retaining members spaced far apart from each other prevent, to an even greater extent, the individual components from coming into contact with each other between the stoppers.
If the ejection member can be placed against a seal joined to the upper container or if it rests against the said seal, a good sealing of the two-component container is achieved after the mixing of the components. In this case, a continuous resilient wall is particularly suitable as a seal.
A securing ring, after the separation of which a container can be screwed against the other container, is used to prevent the two-component container from being activated in an undesired manner.
REFERENCES:
patent: 2793776 (1957-05-01), Lipari
patent: 4784658 (1988-11-01), Grabenkort
patent: 5064059 (1991-11-01), Ziegler et al.
patent: 5186323 (1993-02-01), Pfleger
patent: 5277303 (1994-01-01), Goyet et al.
patent: 5419445 (1995-05-01), Kaesemeyer
patent: 2339388 (1975-02-01), None
patent: 1542467 (1968-10-01), None
patent: 2610901 (1988-08-01), None
Herzog Volker
Kohn Udo
Mayer Joerg
Steigerwald Franz
Foster Jim
Striker Michael J.
Wella Aktiengesellschaft
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