Dispensing – Resilient wall – With flow controllers or closures
Patent
1996-10-30
1998-12-29
Kashnikow, Andres
Dispensing
Resilient wall
With flow controllers or closures
222207, 222439, 222455, B65D 3700, G01F 1126, G01F 1128
Patent
active
058531114
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND
1. Field of the Invention
This invention relates generally to multi-compartment dispensers, and more particularly to a tubular two-compartment dispenser which is designed to fit tightly in the opening of a container.
2. Discussion of Related Art
There are numerous applications where liquids have to be dispensed in measured quantities from a container. This problem is as well-known in bars as it is in the metering of chemicals, oils or liquid active substances. A dispenser suitable for this purpose is known from European patent 0 175 256. This dispenser has the disadvantage that it can only be used in conjunction with relatively rigid containers because, in cases where this known dispenser is used, a reduced pressure is established in the container. In the case of flexible containers, this reduced pressure could lead to a certain contraction of the container which would seriously affect or disrupt the operation of the dispenser. In addition, it has been found that, depending on the liquid to be handled, the displaceability of the pouring channel for dose control in the opening formed in the cover tends to cause leakages or clogging so that the dispenser becomes unusable or the dose cannot be varied.
SUMMARY OF THE INVENTION
An object of the present invention is to provide a dispenser in which these disadvantages are eliminated, and which is inexpensive to produce and simple and reliable in operation while guaranteeing safe dose control.
According to the invention, one embodiment includes in a two-compartment dispenser a tubular body is arranged in the outer cylindrical space defined by a wall and by the base and a cover and, at one end, is tightly connected to a pouring channel and, at its other end, remains at a distance from a base, said tubular body comprising at least one opening on a peripheral line in the vicinity of the connection with the pouring channel, and in that a freely movable body of circular cross-section is provided in the main metering compartment defined by the inner cylinder between the opening and the base, its diameter being greater than that of the pouring channel, and its smallest dimension being greater than the gap between the wall and the base.
Although it has already been proposed to provide dispensers with loose bodies of circular cross-section arranged in the metering compartment, cf. for example French patent 402 258, DE-AS 1 133 650 and DE-GM 78 10 073, all these examples describe dispensers in which a ball is provided in a tubular guide which is adapted to the diameter of the ball and which is designed to perform a sealing function or to close the dispenser. In addition, the three documents are not concerned with two-compartment dispensers. In the cases of French patent 402 258 and DE-AS 1 133 650, the liquid flows directly from the container for as long as it takes the ball to move from a starting position into the closure position. This time-dependent dose control is dependent upon the geometric and physical parameters and, in particular, upon the rheological parameters of the dispenser or rather the liquid and the materials used. The liquid flows directly from the container into the pouring channel during the time it takes the ball to sink.
Accordingly, another object of the present invention is to provide a process for dispensing liquids in which dose control is more exact and which could be carried out with inexpensive but reliable dispensers.
According to the invention, another embodiment includes further developing the first embodiment to the extent that the volume of the body is selected so that the free volume remaining in the metering compartment in the case of a floating body corresponds to the volume of liquid to be dispensed or, in the case of a sinking body, is greater than the volume of liquid to be dispensed by a margin corresponding to the volume remaining in the metering compartment after the body has sunk and closed the pouring channel.
In yet another embodiment of the dispenser according to the invention, the loose body may advantageously
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Bongers Bernhard
Flohr Andreas
Meurer Stefan
Weiss Volker
Henkel Kommanditgesellschaft auf Aktien
Jaeschke Wayne C.
Kashnikow Andres
Quinalty Keats
Szoke Ernest G.
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