Dispensing – Collapsible wall-type container – With wall-collapsing means
Patent
1996-09-06
1998-10-13
Kaufman, Joseph
Dispensing
Collapsible wall-type container
With wall-collapsing means
222105, 2223831, B65D 3528
Patent
active
058199861
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to a liquid dispenser with refill packing, comprising an openable outer container of stiff material being provided with an externally operable dispenser pump or atomizing pump, to which a nozzle is connected at the delivery side and a connector tube at the intake side, and an inner container of flexible material executed as a flexible refill packing for a liquid to be dispensed, closed off by a plug member being connectable to the connector tube and openable by pressing it. With such a liquid dispenser, liquids are understood to mean not only pure liquids such as aqueous solutions, alcohols, oils and the like, but also liquid materials having a higher viscosity, such as gels, jellies and the like, as they are used in e.g. the cosmetics industry, foods, detergents and pharmaceutical industry, and also gaseous media as well as atomizable powder or granular material.
A liquid dispenser of the above-mentioned type is known from the international patent application WO 91/14630. There, the dispenser consists of a foldable outer container of an elongated type, being closed off and retained by a screw-on washer at the top side, to which a spray nozzle is secured that contains a dispenser pump provided with an external trigger, to which a spray nozzle is connected. Protruding in the washer, a tube communicating with the inlet of the dispenser pump is connected to said spray nozzle. A flexible refill packing, filled with a liquid to be dispensed can be fitted in the outer container. Such a refill packing is a bag-shaped packing of flexible plastic material, closed off by a plug being provided with an engaging groove at its outer side. This plug has a central hollow bore being closed off liquid-tight by a membrane. On use, such a refill packing is fitted in the folded-open outer container, that is subsequently closed, in which two special engaging rims engage into the groove at the outer circumference of the plug, so that the fitted refill packing is fixed. Subsequently, the washer with spray nozzle is screwed on, thereby pushing the tube downward against the plug, whereupon in pushing the tube end down further, a cutting edge formed thereon cuts through the membrane, so that an open connection being closed to the outside is established between dispenser pump and the interior of the refill packing.
In an alternative embodiment, the connecting tube is fitted to one of the inner side walls of the outer container and connected to the spray nozzle by means of a hose.
This known liquid dispenser with refill packing has the drawback, that after having been connected to the connector tube of the dispenser, the refill packing has been definitively and irrevocably opened, so that the packing can be removed only after it has been completely emptied. If one would wish to change the liquid while using the dispenser, this is possible only after the packing containing the first liquid has been completely consumed. Even on removing completely consumed refill packings from the dispenser, there is still the possibility that residual liquid will leak through the opened plug. A further drawback is the fact, that after manufacture, the flexible refill packings have to be filled first, before the terminal plug can be fitted onto it.
It is the object of the invention to provide a liquid dispenser with refill packing, in which these drawbacks have been removed.
It is a further object of the invention to provide a connector system that can be used therewith.
The invention also has the object of providing a refill packing, closed by a connector, that can be filled after the connector has already been fitted.
According to the invention, a liquid dispenser with refill packing as defined in the preamble is provided, characterized in that the connector tube is constructed as a hollow pin narrowing at its extreme end, said extreme end having a profiled plug head, with lateral openings being made in the tube wall in the pin extremity closely below the plug head, and that the plug member is a conne
REFERENCES:
patent: 4624413 (1986-11-01), Corsette
patent: 5556005 (1996-09-01), Banks
patent: 5577638 (1996-11-01), Takagawa
Last Laurens
Stokhuyzen Michiel
ITSAC N.V.
Kaufman Joseph
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