WO2016155757A2

WO2016155757A2 - Dosing device for a liquid supply comprising a neck

Info

Publication number: WO2016155757A2
Application number: PCT/EP2015/056681
Authority: WO
Inventors: Herbert Wohlgenannt
Original assignee: Capartis Ag
Priority date: 2015-03-27
Filing date: 2015-03-27
Publication date: 2016-10-06

Abstract

The dosing device consists, for example, of a closure that can be sealingly mounted on the neck and that comprises a closure body (1) with sealing closing means (7). The dosing means of the closure consist of only two components. The first component is a hollow cup (4) which is fixed into the closure body (1) and comprises a window (12) disposed in the side wall of the cup (4) on its base side. A cap-type dosing plunger (10) constitutes the second component, the plunger comprising a projecting part (5) extending in an axial direction on the upper side of the cap. Said dosing plunger (10) with its projecting part (5) fits into the cup (4), wherein the projecting part (5) covers and closes the window (12). The dosing plunger (10) can be moved axially in the cup (4) and the projecting part (5) of said plunger can be pivoted by a limited dimension towards the outer side of the window (12). When pivoted outwards the projecting part, together with the cup (4), forms an open valve that is otherwise closed.

Description

Dosing device for a liquid supply with nozzle

The invention relates to a metering device to issue a liquid supply, be it from a container with nozzle, such as a plastic or pet bottle or a hose with nozzle in metered portions.

Dosierverschlüsse or devices for metering dispensing liquids are known in several versions, such as WO 2005/049477 and EP 2 653 842. The previously known Dosierverschlüsse or metering devices are, however, consistently made up of several parts, at least three even far more parts , In addition, certain parts, such as balls and ball bearings as valve devices demanding in the production, and the items are complex in the assembly, that is, in their assembly to the finished dosing. From US 2,864,538 a metering device is known which can be placed on a nozzle of a container. It protrudes axially from this and forms an example cylindrical or drum-shaped metering chamber of substantially larger diameter than the container neck. This dosing chamber can be moved axially in two end positions. When the container falls, ie when the nozzle is down, the metering chamber is pushed up to its stop and then filled. To empty, we pushed the dosing chamber down to a lower stop, whereupon the contents trapped in it are poured out. In a variant, the dose can also be varied by the metering device more or less strongly twisted, which has an effect on the degree of filling of the metering chamber. However, this metering device can not be integrated into a container neck or even into the interior of the container, but is always attached to the outside of the neck. In addition, the dosing with additional manipulation follows and can not be done with one hand. The container must be toppled headfirst with the dosing chamber pushed against the container, and then the dosing chamber must be pushed downwards, after which a dose flows out. You will inevitably need both hands for dosed pouring.

EP 0 337 778 shows a liquid container with dosing system, wherein this is housed in a closure element and the closure element projects beyond the nozzle of the liquid container by a multiple of the nozzle length. When the container is toppled with its closure element upside down, a defined dose flows out of the container. For dosing, a timer chamber is formed with a cylindrical inner wall, and therein a piston is guided, which is movable downward under the influence of gravity from a start position to an end position when the container is turned over. The piston has a timing flange which forms a slidable wall of the timing chamber and extends radially with respect to the annular wall of the timing chamber and is in slidable, sealed relationship therewith. It thus covers a predetermined volume, which is defined from the start position to the end position of the piston and forms the volume of the timer chamber. And this timer chamber has in the case of a dropped liquid container, so if the closure is below, at the top of the timer chamber inlet openings, through which fluid can flow into the timer chamber. If the fluid container continues to be kept in an overturned position, the piston moves downwards due to gravity and initially stops the further inflow of fluid into the timer chamber. During the downward movement of the piston, the contents of the timer chamber is emptied through the outflow openings in the closure and upon reaching the lower end state of the piston, these outflow openings are sealed and no fluid flows through the Closure. The dose thus depends on the time within which the piston is displaced downwards under gravity. This closure element with dosing system is symmetrical and works with fallen Fluidbehalter, but hardly if the container is slowly pivoted in a merely, for example, 45 ° pouring position. Then the system fails, because the piston is then not pushed reliably down and also on the then upper side of the piston, the local inlet openings are not immersed in liquid partially deflated fluid container. Thus, this dosing system requires that the fluid container is quickly toppled upside down by 180 °, after which time determines how much fluid is poured out. Fluid flows out until, due to gravity, the piston reaches its lowest position, in which it closes the outflow openings.

DE 32 21 438 shows a device for removing a certain amount of liquid from a container. It has a piston slidably disposed in a cylinder, the cylinder being connected at one end to a valve block mounted on the container opening. The valve block has an intake passage with intake valve and an exhaust passage with exhaust valve. The piston stroke is axially limited, wherein a stop is movable and is stepped and extends along a coaxial to the cylinder helix. One of the stops is adjustable in the circumferential direction of the cylinder. Depending on the mutual angular position of the attacks, the piston can sweep more or less way and accordingly suck more or less liquid and release afterwards. The dosing system consists of ball valves for the inlet and outlet and is also composed of a large number of individual parts, in particular also of several small parts. This requires a very complex installation and overall, this closure solution for example, a pouring liquid detergent completely unsuitable. In view of this prior art, it is the object of the present invention to provide a metering device for a liquid supply from a container or hose with nozzles for liquid contents of thick to viscous viscosity, which with a minimum number of parts gets along, is extremely easy to assemble, and which is foolproof in the application, not clogged and allows reliable dosing by simply tilting into a pouring or by tumbling and squeezing the container or a bellows associated to a hose from which fed the liquid becomes. In a particular embodiment, the dosage between a minimum and a maximum should be infinitely adjustable, and allow in a further setting a continuous pouring.

This object is achieved by a metering device for a nozzle for dispensing defined doses from a container or hose, consisting of a screw-on the neck or aufprellbaren, optionally with separate lid lockable spout attachment with it held closure body, which a Dosing control chamber with variable volume includes, which is filled when pouring from empty to full, and that the metering control chamber is limited by two stationary and two sliding walls by the closure body two parallel, any shaped axially extending to the nozzle side walls exist are, one of which is slidably mounted relative to the other in the axial direction to the neck on the closure body, and that the stationary side wall of the closure body forms on its side facing the container a projecting at an angle to the bottom wall, which connects to the movable side wall esst, and the movable side wall at its end facing the mouth of the container neck forms an angle to its projecting ceiling wall, which adjoins the stationary side wall, wherein the variable volume enclosed by all four walls forms the metering control chamber, and at fully in Direction of the mouth of the container neck extended position of the movable side walls, the spout is sealingly covered by the ceiling wall. Various embodiments of this metering device and its parts are described below with reference to the drawings and the function of these parts and the operation of these metering devices are explained and explained in detail. It shows:

The metering device in a dropped pouring position, with the closing means removed;

A similar metering device in a fallen pouring position, shown from obliquely below in perspective, with the closing means pivoted away by 180 °;

This metering device in a fallen pouring position, shown obliquely from above in perspective;

The first, stationary part of the dosing agent, namely the cup with window;

The second, movable part of the dosing, namely the metering piston with extension;

The dosing agent inserted into the device, with the metering piston in its uppermost position in the cup;

The metering device shown in an axial section, with the metering piston in its uppermost position in the cup, ready to dispense a Dosierportion;

Figure 8: The metering device shown in an axial section, with the

Dosing piston on its way down, when dispensing the Dosierportion;

Figure 9: The metering device shown in an axial section, with the

Dosing piston in its lowest position after dispensing of the dosing portion; The metering device shown in an axial section, with the metering piston in its lowermost position, after pressure relief of the container and in consequence of the atmospheric pressure pivoted dosing in the cup;

The metering device shown in an axial section, with the metering piston in its uppermost position, after ventilation of the container and reduction of the pivoting due to the geometric design of the parts;

An alternative embodiment of the first, stationary part of the dosing, namely the cup with window;

An alternative embodiment of the second, movable part of the dosing, namely the metering piston with a flat extension;

The metering device in the alternative embodiment with a metering piston with a flat extension, seen from obliquely below.

The dosing without inserted dosing, in a design for continuously adjusting the dosing between a minimum and a maximum;

The metering device for continuously adjusting the

Dosing amount seen from below, with setting for a minimum dosing amount;

The metering device for continuously adjusting the

Dosing amount seen from below, with setting for a maximum dosing quantity; The dosing device is mounted on a hose end, which is equipped with a check valve, bellows and hose nozzle;

An alternative embodiment of a metering device with spout attachment and closure body;

The closure body with metering control chamber of the metering device according to Figure 19 in Ausgießlage, shown partially cut away;

The closure body of Figure 20 in a section along the cylinder axis of the closure body;

The closure body with metering control chamber of the metering device according to Figure 19 in Ausgießlage, shown partially cut, with the sliding boundary walls on half displacement and the outflowing liquid indicated by arrows;

The closure body of Figure 22 in a section along the cylinder axis of the closure body;

The closure body with metering control chamber of the metering device according to Figure 19 in Ausgießlage, shown partially cut, with the sliding boundary walls at the end of their displacement, whereby the outflow is stopped;

The closure body of Figure 25 in a section along the cylinder axis of the closure body;

Figure 26: The Au sgu ss essay shown separately, in a partial section shown;

The Au sgu ss essay seen from above seen in perspective view;

The Au ss ss essay shown from below;

The spout attachment side seen in a diametrical section;

The spout attachment shown from above;

This metering device according to Figures 19 to 30 in an embodiment with adjustable metering, shown in a partial section, for the output of a minimum dosage, at the beginning of the dosing process;

FIG. 32: This metering device according to FIG. 31, at the end of the FIG

metering;

Figure 33: This metering device according to Figures 19 to 30 in a

Version with adjustable dosing quantity, shown in a partial section, for the output of a maximum dosing quantity, at the beginning of the dosing process;

FIG. 34: This metering device according to FIG. 33, at the end of the FIG

metering;

Figure 35: This metering device according to Figures 19 to 30 in a

Version with adjustable dosage, shown in a partial section, for unhindered, continuous pouring of liquid, at the beginning of pouring; Figure 36: This metering device according to Figure 35, in the end position of the movable boundary walls of the metering control chamber for unimpeded, continuous pouring. Figure 1 shows the metering device, executed in the example shown as Dosierverschluss, in a dropped pouring, with removed closing means, which may be a cap hinged on the closure spout 3 aufschwenkbar and it can be clicked or clicked on it or screwed , This dosing device or here this dosing is screwed with its closure body 1 on the neck of a container or hose, aufprellbar or sealing on sliding or clickable. So that the closure body 1 can be fastened in a sealing manner on a neck, it can be provided, for example, with an internal thread which fits on a corresponding external thread of the neck. Conversely, the nozzle may have an internal thread, and then the closure body is designed with a pipe extension extending into the nozzle, which then has a corresponding external thread. As an alternative, the closure body can be bounced on an otherwise smooth bottle, container or hose nozzle by means of an inner circumferential bead over an outer edge. Sliding over a rubber seal or clicking over snap-in elements is also conceivable. Finally, the closure body 1 simply has to be mounted sealingly on a neck of the container or hose - no matter how. In the image below from the closure body 1 protrudes a knurled rotary body 2, which is rotatably inserted within the closure body 1 by a certain range around the closure axis. However, this is already an option, as will become clear later.

In a simplest embodiment, the metering device or the dosing without such a rotary body comes from, which can then simply sit tightly in the closure body or can form an integral part with him, so no more rotary body. At the bottom you can see the spout 3 of the dosing, from the centric hole of the dosed liquid emerges. Above the closure body 1 are the two components of the dosing recognizable, namely the upper end of a stationary cup 4 with the window not visible here, and the extension 5, which belongs to a movable metering piston. This extension 5 forms an extension of the cylindrical wall over an angular segment of 90 ° to 200 °. Finally, in this view, a helical limiter 6 can be seen, the meaning and function of which will become clear as the description proceeds.

Figure 2 shows this dosing in fallen discharge position, shown from obliquely below in perspective. The closing means here is a cap 7, which can be pivoted on the closure body 1, the rotary body 2 and spout 3 via a film hinge 8, and closes the spout 3 by clicking on the edge 9 of the closure body 1. Above can be seen the limiter 6 and the extension 5 on the metering, which were mentioned for the description of Figure 1.

FIG. 3 shows this metering closure in a fallen pouring position, shown obliquely from above in perspective. In this view, you can see the two components of the dosing, namely in the example shown, the movable metering 10 with his here, upwardly extending projection 1 1, and the upper part of a hollow cylindrical cup 4 with a window 12, here on a entire lateral half of the cup 4 extends. These parts will be described in detail below with reference to the other figures and their function will be explained. Figure 4 shows the first, stationary component of the dosing, namely the hollow cylindrical cup 4 with side window 12. Essentially, it is merely a hollow cylinder, which is therefore closed at the top with a cover 13, said cover 13 in just as shown, but may also have a deviating from the plane shape. Its window 12 is recessed at the upper end in the peripheral wall and extends here by half of the circumference. The lid 13 is shortened at its edge in the outer edge region which extends along the upper edge of the window to the wall thickness of the peripheral wall in the radius. Its exterior, a little bit behind inside offset edge 25 extends are then both sides slightly wider than around half the circumference, so that 12 incisions 14 in the lid 13 are formed on both sides of the window. On its inside 4 guide ribs are formed in the hollow cylinder of the cup, which extend in the axial direction.

In the hollow cylindrical cup of Figure 4, the second, movable component of the dosing agent can be inserted, namely a metering piston 10 with extension 5 as shown in Figure 5. To a certain extent, this metering piston 10 forms a chair which is covered with a cover. In the lower part, it forms a hollow cylinder 19, which is open at the bottom, and its outer wall extends upward beyond the upper end face 15 of the hollow cylinder 19 and forms an extension 5 in the form of a free-standing segment of a peripheral wall. This extension 5 extends here around half the circumference of the hollow cylinder 19 or metering piston 10. It can also extend over an angular segment of 90 ° to 200 ° in the axial direction to the metering piston 10. To stay with the pictorial comparison with a chair, so this extension 5 forms the chair back, so to speak. On the outside of the metering piston 10 there is a wedge-shaped rib 16 on both sides with an oblique surface 17, which therefore runs at a slight oblique angle to the axial direction of the hollow cylinder or metering piston 10. In the example shown, there is also an axial rib 18 on the front of the cup, or on the front of the "chair" formed by him.

Figure 6 shows the dosing in the metering device or here used in the dosing, with the metering 10 with its extension 5 in its uppermost position within the cup 4. As can be seen, fits the extension 5 with its lateral edges 20 in the incisions 14 on the lid 13 of the cup 4 a. Thus, the metering 10 can move inside the cup 4 in the axial direction, and because the dimensioning of the parts is designed so that it deliberately a game is left open, the metering 10 can also little with respect to the axis of the cup 4 laterally within the Bechers tend so that the axis of rotation of the metering 10 is no longer exactly parallel to that of the hollow cylindrical cup 4. This geometry proves to be crucial to the function the dosage, as will be explained in detail. Finally, FIG. 6 shows the helical limiter 6, which, however, is irrelevant to the basic function of the metering, but offers an option if the metering quantity should be adjustable within a certain range, as will be explained in more detail below How dosing works is described and explained step by step.

FIG. 7 shows the metering device or the metering closure in an axial section, with the metering piston 10 in its uppermost position within the cup 4, ready for dispensing a metering portion. In this position, the space 21 has filled below the metering 10 with liquid from the container 22, with which the dosing is equipped. However, it can not escape, because no air is able to flow through the spout 3 from below. This is because the metering chamber is sealed at the top approximately, that is, the metering piston 10 is largely sealed in this uppermost position relative to the cup 4 by its extension 5 pushes in front of the window 12 in the cup 4. This geometry, as well as the viscosity, prevents ingress of air and thus leakage of liquid through the spout 3. The beginning of the dosing cycle will be described from this point, with the position of the metering piston 10 as shown. Now it is important to pour out this Dosierportion within the metering 10 and below the same to the outside. For this purpose, a higher pressure must be generated in the interior of the container 22 or in the case of a hose in the interior of the tube than that which prevails outside the container, tube and closure, ie a higher pressure than atmospheric pressure. This is done by squeezing the container 22 with one or both hands and thus squeezing it lightly. In the case of a hose for the liquid supply, this can be done by a hose valve is installed in the hose in its end before the metering, and this opens into an elastic compressible bellows, which then opens into a nozzle and which nozzle finally equipped with the metering device is. The stronger the container or the bellows is squeezed when the hose valve is closed, the faster then the output of the dosing, which takes place in a typical dimensions of the metering device has a volume of 80ml to 90ml. Of course, can be made larger or smaller by another design, so to speak, by a scale enlargement or reduction of the metering the Dosiermenge. The metering chamber - not to be confused with the metering control chamber - is always the space 21 below the metering 10th

The liquid content of the container 22 presses when squeezing the container or bellows from the top of the lid 15, that is analogous to the chair seat of the analogous chair, the dosing piston 10 forms. Below the lid 15 there is only atmospheric pressure, ie a lower pressure. Thus, the metering piston 10 moves inside the cup 4 as shown in Figure 8 down and pushes the enclosed below Dosierportion the liquid through the spout 3 to the outside. The space above the lid 15 forms a metering control chamber 64, the first in the state as shown in Figure 7 does not include a volume, but the volume by the downward movement of the metering 10 continuously growing and in the lowest position of the metering 10 finally Maximum reached. The space of the metering control chamber 64 is limited by a total of four walls, namely two stationary and two movable walls. Namely, there are two mutually parallel, extending in the axial direction of the neck side walls, of which one is displaceable relative to the other. One wall is stationary, namely the peripheral wall of the cup 4, while the displaceable side wall is formed by the extension 5. In addition, there are two other boundary walls, namely the bottom 24 of the cup as a stationary boundary wall and the lid 15 of the metering or the seat of the corresponding chair as a sliding boundary wall. The bottom 24 and the bottom wall is at an angle from the wall of the cup 4, and the lid 15 is here at a right angle from the extension 5 from. The variable volume enclosed by all four walls 15, 5, 4, 24 forms the metering control chamber 64. When the container is crushed, the metering piston is pushed downwards and the volume of the metering control chamber increases and is simultaneously filled from above. The metering device is again shown in Figure 8 in an axial section, with the Dosierkolben 10 on its way inside the cup 4 down, at the output of Dosierportion. In the illustrated position, the metering piston 8 has covered about one-fifth of its way down. The semicircular extension 5 on the metering piston 10 nestles within the window 12 against the inner wall of the cup 4 and closes the gap approximately liquid-tight. This depression of the metering piston 10 due to the above higher pressure than on its underside continues until the metering 10 finds a stop below the inner edge 23 of the spout 3. The lowermost end position of the metering piston 10 is shown in FIG. It shows the metering device or the metering in an axial section, with the metering piston 10 in its lowest position, after dispensing the Dosierportion. Until shortly before reaching this position, liquid also flowed out of the container behind the extension 5, meaning in the same way behind the chair back, from the container through the space behind it downwards. The important distance between the back of the extension 5 and the meaningful chair back to the inner wall of the hollow cylindrical cup 4 is shown here with D1. In the position shown, the closure is sealingly closed by the lower edge of the metering piston sealingly rests on the edge 23 in the interior of the spout 3 and closes it. The metering is ultimately achieved by filling the metering control chamber 64. In order for the pouring of a dose of liquid, which is initially trapped or retained in the filled metering chamber 21, the metering control chamber 64, which grows in volume as a result of the downward movement of the metering piston 10, must be filled from empty to full. In step with this, the dose is dispensed through the spout 3.

It is now necessary to prepare a new portion of the liquid for metered dispensing or to load in the metering chamber of the metering piston 10 from the liquid supply. For dispensing the dose yes, the container was compressed, or compressed in the case of a supply hose whose bellows built up until the metering piston 10 was pressed all the way down and then sealed the container sealing. If you let go of the container 22 or bellows, it forms elastically back and forth thus creates a negative pressure relative to the outside prevailing atmospheric pressure. As a result, there is a pressure surplus, which acts on the underside of the lid 15 and on the analogous underside of the seat of the chair, which is formed by the metering piston 10. But because now the metering 10 inside the cup 4 intentionally with a little game sits, he gives immediately in the direction where no resistance is present, and that is in the pivoting direction of the meaningful chair back to the rear.

Thus, the extension 5 is inclined as shown by the arrow in Figure 10 slightly outward. This movement or lateral inclination of the metering piston 10 causes it to act together with the cup 4 as a valve. So it not only performs a pure function as a piston and Varierer the metering-control chamber volume true, but also a valve function. Due to the resulting gaps due to the deliberately chosen game and by their broadening due to the inclination of the metering piston 10 in the hollow cylindrical cup 4, air can flow from below through these gaps up into the interior of the container 22 or bellows and ventilate it. In the same volume of liquid flows from the container 22 or in the case of a hose from its elastic bellows through the gaps between the cup 4 and metering 10 down into the metering chamber. This initial position for filling the metering chamber is shown in FIG. It shows the metering in an axial section, with the metering piston 10 in its lowest position, after pressure relief of the container 22 and in consequence with the due to the atmospheric pressure pivoted metering 10 inside the cup 4. With persistent and prevailing pressure difference but now moves the Dosierkolben 10 in the hollow cylindrical cup 4 from this position upwards, because yes, the prevailing atmospheric pressure below its lid 15 is greater than that due to the elastic recovery of the container 22 or bellows in the interior and thus above the lid 15 prevailing pressure. The upward movement of the metering piston 10 prevails until it strikes with its lid surface 15 inside at the bottom 24 of the hollow cylindrical cup 4. His extension 5 has been moved over and through the window 12 on the cup 4 up and now dominates the cup 4 in the container interior, or in the case of a hose, he protrudes into the Hose nozzle into it.

The finally assumed end position is shown in Figure 1 1. It shows the metering device or the dosing in an axial section, with the metering piston 10 in its uppermost position, after ventilation of the container 22 or tubular bellows. In the course of the upward movement of the metering piston 10 whose inclination relative to the container axis has been continuously reduced. The inclination of the metering piston 10 is therefore smaller in this end position relative to the initial inclination. In the end position shown here, there is an overlap of the height of the lower edge of the metering 10 on the side of its extension 5 with the upper edge of the hollow cylindrical cup 3 by a certain distance, which is shown here in Figure 1 1 with D2. So that the inclination of the metering piston 10 is reduced in the upper region of its path and finally limited in the end position, so that adjusts the end position shown, ribs 18,17 are mounted on its outer side of the metering piston 10, which are visible in Figure 5, and which act as guides. During the entire upward movement of the metering piston 10, in exchange for aeration of the container contents, liquid from the same could run through the gaps around the metering piston 10 into the area below it and fill this space. As soon as again pressed onto the outer walls of the container 22 or the bellows, its internal pressure again increases beyond the atmospheric pressure. Again, the dosing piston 10 now acts as a valve and closes off the gaps through which the liquid from the container 22 or bellows could previously run into the dosing space.

Summarized so, starting from the lowest position of the metering piston 10 and squeezed together container 22 or bellows as shown in Figure 9, the metering 10 first by relieving container or bellows and thus generating a negative pressure relative to the atmosphere for swinging away in the position forced after Figure 10 and afterwards to ascend, because below it, a higher pressure acts as above. During this movement, liquids run through the resulting gaps in the metering chamber, but in the same due to the pressure conditions held. As soon as the metering piston 10 with its lid 15 abuts the top of the cup, as shown in FIG. 11, the metering chamber is filled to its maximum. Now again pressure can be built up in the container 22 or bellows, by squeezing. This leads to the alignment of the metering piston 10 on the axis of the cup 4 and afterwards to the lowering of the metering piston 10 and the output of the previously caught under its lid 15 Flüssigkeitssportion.

Meanwhile, the components presented so far may be differently shaped and dimensioned, and each component may, if necessary, be composed of several parts, although just an advantage of this metering device, even in their execution as Dosierverschluss, the fact is that they are made only these two components, namely from cup 4 and metering 10 can be produced. FIG. 12 shows an alternative embodiment of the first, stationary part of the dosing means, namely the cup 4 with window 12. The window 12 is here produced by a cutaway of almost the whole lateral half of the cup 4. As a lid 13, only a slightly more semicircular lid 13 is left. The associated metering piston is shown in FIG. This has a special feature on a flat extension 1 1, which therefore extends approximately diametrically over the otherwise cylindrical metering piston 10. This extension 1 1 thus runs as a secant on the lid 15 of the cylindrical metering piston 10. At this point it should be noted that the window can also be designed differently, as well as the extension. The main thing is that the extension pushes with pushed up dosing over the window and finally comes to rest on it. The remaining elements on the metering piston 10 such as the ribs 16,17,18 remain under changed. If this metering 10 is inserted from below into the cup 4, so its flat extension 1 1 finally covers the window 12 in the cup 4, but approximately not completely sealed. However, from this uppermost end position, the metering piston 10 can be easily tilted about its transverse axis, so that the extension 1 1 can be easily tilted outwardly from the window 12 like a tilting window. Because the metering piston 10 can thus switch between an initial almost sealing end position to a skew, in which the columns between the frame of the window 12 and the edges of the flat extension 1 1 are open, this has an actual valve function, which is important for the optimal operation of this metering device or disees Dosierverschlusses.

The two crucial parts of the metering device or the metering closure, namely the cup 4 and the metering piston 10, however, need not necessarily be designed cylindrical. They can work equally well if they form cross-sectional areas other than a circle, such as an oval or triangle, rectangle or square with rounded corners, or any other shapes, such as a pentagonal or polygonal cross-section. It is only important that at the lowest position of the metering 10 within the cup 4, the two components form a closed valve, and form during the upward movement of the metering 10 within the cup 4 an open valve, the free flow cross-section until reaching the top position of Dosing piston 10 steadily slightly reduced, and wherein the valve then closes when the metering 10 is pressurized from above, or a higher pressure on the top of the lid 15 acts as the then acting from below atmospheric pressure. Overall, a metering control chamber 64 is filled during the pouring and when it is full, the discharge is stopped.

FIG. 14 shows a metering device with an embodiment of the metering piston with a flat extension 1 1 as shown in FIGS. 12 and 13. The metering device is shown here in a view obliquely from below. At the top of the closure body 1 protrudes a helical limiter 6, which forms a downwardly or in the opposite direction upwardly winding web 28, on the underside of the planar extension 1 1 strikes with its upper edge. This web 28 is in the example shown helically sloping or rising and is connected as a limiter 6 with the rotary body 2, which protrudes down here from the closure body 1. However, the web 28 may also have a deviating from a helix shape and, for example, steadily or discontinuously rising or falling be designed. The rotary body 2 can be rotated about the central axis, wherein the rotation range extends through approximately 90 ° and is limited by a radially projecting co-rotating cam 24 by this between two stop dogs 26,27 on the device body 1 back and forth rotatable, but not further. With the rotation, the position of the helical ridge 28 relative to the extension 1 1 changes so that it sooner or later, depending on the rotational position of the limiter 6 with its upper edge on the underside of the helical ridge 28 a stop. Thus, the displacement of the metering 10 is adjustable in the interior of the cup and thus the dosage is adjustable.

The limiter 6 with its helical web 28 can be clearly seen in FIG. In this figure, the otherwise connected in one piece with the limiter 6 rotary body 2 is omitted. For this one sees in this figure, the two stop cams 26,27 to limit the rotational range of the rotary body 2. When the limiter 6 is rotated with the rotary body 2 relative to the device body 1, so causes a continuous adjustment of the dosing between a minimum and a maximum. FIG. 16 shows the metering device for this stepless adjustment of the metering amount seen from below, with adjustment for a minimum metering quantity. The rotary body 2 has been rotated here clockwise until the cam 24 struck on the stop cam 27. The limiter 6 is then positioned so that the extension 1 1 on the metering piston 10 only a minimum way up can cover.

Conversely, Figure 17 shows the metering device for continuously adjusting the dosing amount seen from below, with the setting for the maximum dosage. The rotary body 2 was here rotated in the counterclockwise direction in the closure body 1 until its cam 24 on the stop cam 26 found a stop. In this case, the limiter 6 on the upper side of the metering device in such a position that the extension 1 1 on the Dosierkoben 10 can cover a maximum distance. It is clear that all intermediate positions between the two stop cams 26,27 are adjustable.

Figure 18 shows this metering device mounted at the end of a hose 29. This hose 29 is equipped in its end with a bellows 31, which can be supplied via a hose valve 32 with liquid from the hose 29, when this valve 32 is opened for this purpose becomes. In the closed state, this valve 32 ensures that no liquid from the hose flows into the bellows 31 when the previously compressed bellows 31 are released. The bellows 31 is equipped at the front with a hose nozzle 30, on which the metering device with its device body 1 and rotary body 2 as well as to a container neck sealingly placed. For the metered dispensing of liquid, that is, liquid portions, the hose valve 32 is closed and the bellows is pressed together 31 thereafter and acts in the same way as a container, whereby the liquid pressure inside the metering device becomes markedly higher than the atmospheric pressure. It is issued a liquid sport. After that, the bellows 31 is released so that it returns elastically to its original shape. The pressure inside is reduced, below the atmospheric pressure. Air can now flow through the metering device into the interior of the bellows 31, whereby the metering chamber refills with liquid from the bellows 31 again. The refilling of the bellows 31 is done by opening the hose valve 32 when it is emptied.

In the figure 19 another construction of a Dosierverschlusses is shown. But this dosing is based on the same inventive idea, namely also a dosing control chamber. It is also filled while pouring a dose, and when it is full it stops the discharge, as described and explained below. Shown here in Figure 19 above a spout top 40 and below the actual closure body 41 of the dosing. Both parts are shown in an upright position, in which they are put together on the upright to be equipped container neck, where you see the spout top 40 here slightly from below and the closure body 41 seen from above. The spout attachment 40 forms a cap, in whose outer peripheral wall on the Inside a bead or as in the example shown here, a thread 42 is formed. With this, the spout attachment 40 can be screwed over on the nozzle to be equipped. The center of the spout attachment 40 is spanned by a disc 44, which has a spout hole 45 offset radially from the center to the outside. At the edge of the disc 44 is a vent hole 46 with free passage from top to bottom. To the disc 44 around downstanding here wall segments 47 are formed with retaining means on its inside, for example in the form of inwardly projecting beads. With these retaining means or wall segments, the spout attachment 40 can be placed on the closure body 41 from above, in which case the retaining means of the wall segments 47 click over the bead 43, after which the two parts produced as injection molded parts are firmly joined together. At the top of the spout attachment you can still see the spout 48.

The closure body essentially forms a cylinder 49, which is closed at the top by a disk 50 with a pouring hole 51. In the picture shown, a wall piece of the cylinder wall is cut away to reveal the view into the interior. On the left side in the image, the cylinder wall 54 leads down into a bottom wall 52 extending at an angle to it, similar to a funnel shape, and at the bottom it has an opening 53. The cylinder wall 54 forms a stationary side wall 54 of a metering control chamber, and the funnel-shaped wall forms a bottom wall 52 of this metering control chamber. The cylinder 49 on the right side of the image has a flat, perpendicular to the cylinder axis bottom wall 55, in which a hole 56 is excluded. This bottom wall 55 is not quite enough here to the center of the cylinder diameter and thus leaves a gap 57 to the opposite funnel-shaped bottom wall 52 free. On the far right in the picture you can see a vent tube 58, which integrated into the cylinder wall leads to the upper end of the cylinder 49 and protrudes down beyond the cylinder down. On two diametrically opposite sides on the inner wall of the cylinder 49 axially extending grooves 59 are formed, of which only one is visible, while the other is cut away, but runs the same as the one here visible. The grooves 59 extend downward beyond the lower end of the cylinder 59. Inserted into these two grooves 59 is a flat side wall 60 which is axially displaceable therein in the cylinder 49 and which forms the displaceable side wall 60 of the metering control chamber 64. From the upper edge of this side wall 60, an upper ceiling wall 61 extends at right angles radially outwards and adjoins the inside of the stationary side wall 54. The lower end of the flat side wall 60 forms a trapezoid 62, so that this side wall 60 is flush with the funnel-shaped bottom wall 52 whose inner edge covers and closes in completely pushed up position. The axially displaceable side wall 60 can be displaced upwards until its upper ceiling wall 61 abuts against the disk 50. Here, this ceiling wall 61 closes the spout hole 51 in the disc 50. Downwardly, the axially displaceable side wall 60 can be moved until the outer, circular arc edge of the upper ceiling wall 61 has reached the lower end of the stationary side wall 54 and by the inwardly extending funnel-shaped Bottom wall 52 is stopped. In the upper end region of the stationary side wall 54, this has at least one window 63 which extends along the circumference of the corresponding cylinder wall. Thus, this closure body is described in all parts. The axially extending side walls 54, 60 of the metering control chamber 64, however, may have whole other shapes, so do not necessarily form a cylinder wall or a flat wall. The only requirement is that one is displaceable in the axial direction relative to the other and closes the top wall 61 of the displaceable side wall 60 with the other, stationary side wall 54 and bottom closes the bottom wall 52 on the stationary wall 54 with the displaceable side wall 60, at least until on an opening 53.

The function of this dosing closure, when the spout attachment 40 is placed on the closure body 41, will be explained with reference to the following figures, in which the closure body of Dosierverschlusses is shown in schwiefwinkliger pouring position. In FIG. 20, it is initially shown in the state in which it is at the start for the pouring out of a dose. The dose is determined by the maximum content of the metering control chamber 64, as in the The following becomes immediately clear. The image shows the displaceable side wall 60 at the very bottom in the closure body or in the image on the far right. The ceiling wall 61 abuts the bottom of the funnel-shaped bottom wall 52. The liquid flows from this starting position of the metering process from the right below the displaceable side wall 60 through the opening 53 into the metering control chamber 64, which here is formed by the stationary side wall 54, the funnel-shaped bottom wall 52, the displaceable top wall 61 and the displaceable side wall 60 , In the stationary side wall 54 can be seen in its area on the left, that is in the closure body above, a portion of the window 63 in the cylinder wall of this stationary side wall 54. The liquid pushes now by the pressure exerted by the ceiling wall 61 in the image to the left or in the closure body upwards. The volume of the metering control chamber 64, which in the course of this displacement of the displaceable side wall 60 fills and enlarges with its top wall 61, increases linearly to the same extent. At the same time liquid flows out of the container above the displaceable side wall 60 through the gap 57 formed there and through the hole 56 from right to left and finally through the spout 51 to the outside, as indicated by arrows. On the left in the picture you can see the closure body top closing disc 50 with its spout 51. In return for the flow of liquid into the metering control chamber 64, air flows from outside through the vent tube 58, in the image from left to right into the container.

In Figure 21, the dosing or its closure body, which is indeed inserted into the neck of a container and is enclosed by this, shown in the same pivotal position in a section along the cylinder axis. It can be seen the four boundary surfaces for the volume-variable metering control chamber 64 formed by them, namely the stationary side wall 54, the bottom wall 52, the sliding side wall 60 and its top wall 61st In addition, you can see on the left in the picture, the disc 50 and the spout 51 in it.

Figure 22 shows the situation in the advanced filling of the metering control chamber 64 when the bottom wall 61 on the variable side wall 60 has covered about half their possible way, even before their top wall 61st the window 63 visible in FIG. 22 has swept over in the stationary side wall 54. The displaceable side wall 60 and its upper ceiling wall 61 have been moved so far in the closure body in the image to the left. The metering control chamber 64 is filled more and more with liquid and during this filling flows above the side wall 60 constantly on the growing in volume metering control chamber 64 liquid as indicated by the arrows through the gap 57 and the hole 56 from right to left and through the spout hole 51 to the outside. Liquid can also flow below the closure body between him and the thus equipped nozzle of the container in the image from right to left and finally flow through the window 63 and the spout hole 51 to the outside. The same can be seen in Figure 23 on the basis of the section along the cylinder axis of the closure body.

FIG. 24 shows the situation when the variable side wall 60 of the metering control chamber and its top wall 61 have been displaced maximally to the left in the closure body in the image. In the last section, the top wall 61 swept over the window 63. As soon as this window 63 has passed from the top wall 61, liquid can also flow from below through this window 63 between the neck and closure body from the container into the metering control chamber 64, thus accelerating the process Moving the ceiling wall 61 to the left, so that it closes the spout 51 quickly. FIG. 25 shows this same situation in a section along the cylinder axis. The ceiling wall 61 is located at the bottom of the disc 50 and closes the spout 51 in the disc 50. In this figure, the window 63 in the side wall 54 and cylinder wall in the area of the rear part of the stationary side wall 54 in the picture after the spout To recognize hole 51.

In Figure 26, the spout attachment 40 is shown separately in the pouring position, cut out with a piece to release the view into the interior. The spout hole 45 in the disc 44 leads into a spout 48 which includes the hole 45 on its lower side. It can also be seen here the internal thread 42 for screwing on the spout attachment 40 a container neck. And in Figure 27, the spout attachment is seen from obliquely seen above, with spout beak 48, spout 45 in the disc 44 and the vent hole 46 in the edge region of the disc 44. Typically, with this dosing closure is thus metered by a dosing Control chamber is filled when pouring a dose, and when the container with the dosing is swung back into an upright position, this dosing control chamber is emptied in the reverse flow direction of the filling again and the sliding side wall 60 with its top wall 61 returns to its original position ,

In the figures 31 to 35, a very special version of this dosing is shown, each in a partial section to release the view into the interior. This allows a continuous adjustment of the metering volume or the volume of the metering control chamber between a minimum and a maximum, and also the setting of intermediate layers in which the metering ensures a free discharge without metering. To this end, it is designed closure body with its sliding side and top wall in three parts. There is first a first part A with the stationary side wall 54 and the bottom wall 52, and this part A can be inserted into the neck of a container to be equipped by having a projecting edge 65 and a peripheral edge wall 66 projecting downwards on its periphery, the equipped with an internal thread 67. On this upper end of the part A, an adjusting ring 68 is placed, which extends on the inside of the part A along the inner wall downwards, rests on top of the edge 65 and outside rests with its own peripheral wall 69 on the peripheral wall 66 of the part A and this includes. This adjusting ring 68 can be rotated about the axis of the closure body, whereby the part B, which is located in the interior of the part A, via a helical guide groove in the axial direction can move up or down by the part B but can not rotate , In the cover surface of the adjusting ring 68, a window 72 is excluded, through which its adjustment position relative to the underlying part A is displayed. The part B forms the two-sided grooves 59 for the guidance of the displaceable side wall 60 and the top wall 61 as a third Part C. In addition, the ventilation tube 58 is formed by the part B, and the upper disc 50 and its spout 51st In contrast to this embodiment according to FIGS. 19 to 30, the size of the variable metering control chamber can be varied by rotating the adjusting ring 68 by moving the part B axially.

In Figure 28 you can see the spout attachment in a view from below In addition to the disc 44 with spout hole 45 and vent hole 46 can be seen, the wall elements 47 with their retaining means for clicking the spout attachment to the closure body. FIG. 29 shows the spout attachment in a diametrical section. In addition to the element already mentioned, one can see here the thread of the internal thread 42 as well as the spout 48. In FIG. 30, finally, the spout attachment is shown from above. To the spout hole 45 can be seen the spout beak 47th

Figures 31 to 36 show the principle in principle the same functioning metering device, but now in an embodiment which allows the adjustment or change the Dosiermenge. For this purpose, the closure body is designed in two parts A and B, and part B is designed to be displaceable relative to the part A. FIGS. 31 and 32 show the situation in which the metering closure is set for a smallest metered quantity. For this purpose, the part B is displaced into a maximum depth position into the closure body. For the sliding side wall 60 and its top wall 61 only a small displacement is maintained. FIG. 31 shows the variable side wall 60 with its top wall 61 in the initial position and FIG. 32 in its end position for stopping the outflow by covering or closing the spout hole 51 in the disk 50. The part B can be further rotated by turning the adjusting ring in FIG axial direction are extended from the part A upwards or to the outside, for the setting of a maximum metering amount, as shown in Figure 33 and 34. Accordingly receives the sliding side wall 60 with its ceiling wall 61 a larger displacement. FIG. 33 shows the metering control chamber in the starting position. When pouring it is filled and the sliding side wall 60 with its ceiling wall 61 shifts to the outside and the top wall 61 finally covers the spout hole and thus stops the outflow. FIGS. 33 and 34 also show the windows 63 in the stationary side wall at part A.

In Figures 35 and 36, the setting for an undosed, continuous pouring is shown. For this purpose, the part B has been moved even further in part A to the outside, again by turning the adjusting ring 28. FIG. 36 shows the starting position of the displaceable side wall 60 and top wall 61 of the metering control chamber. From this position, the container is pivoted in pouring position. The displaceable side wall 60 and its top wall 61 are displaced outwardly, driven by the outflowing liquid, until the position of the variable side wall 60 and its top wall 61 are reached, as shown in FIG. The side wall 60 carries at its lower end an outwardly projecting projection 70 which serves as a stop. Namely, if the part B protrudes so far from the part A, proposes the sliding side wall 60 with this extension 70 in the extended position on the part A and prevents further displacement to the outside. It thus remains constantly a flow opening, because the ceiling wall 61 stops at a distance from the spout 51.

digits directory

1 device body

2 rotary bodies

3 sink

4 hollow cylindrical cup

5 extension on dosing piston

6 helical limiter

7 closing cap

8 film hinge

9 edge of the device body for engaging the closing cap

10 dosing pistons

1 1 level extension on dosing piston

12 windows in hollow cylindrical cup

13 Lid on the cup

14 cuts on the cup lid 13

15 lid on the hollow cylindrical dosing 10th

16 lateral rib on the dosing piston

17 inclined surface on rib 16

18 rib at the front of the chair-shaped dosing piston

19 hollow cylinder on metering 10th

20 lateral edges 20 in the cuts 14 on the lid 13th

21 space 21 below the metering 10th

22 containers, bottle

23 inner edge of the spout 3

24 cams as adjustable travel limiters

25 inwardly shortened edge of the lid 13th

26 First stop cam on the closure body 1

27 Second stop cam on the closure body 1

28 helical web on the limiter 6

29 hose

30 hose nozzle

31 bellows

32 hose valve 40 Au ss ss essay

41 closure body

42 Thread on the Au ssu ss essay

43 bead on closure body

44 Washer on top of the exterior

45 spout hole in disc 44th

46 ventilation hole on 40

47 wall segments with retaining means

48 Spout beak

49 cylinder of the closure body

50 disc on the closure body

51 spout hole in the disc 50

52 funnel-shaped bottom wall

53 opening at the bottom in 52

54 Cylinder wall / stationary side wall of the dosing control chamber

55 Bottom wall on the closure body outside the dosing control chamber

56 holes in 55

57 gap outside of displaceable side wall 60

58 ventilation pipe

59 grooves for the guidance of the side wall 60

60 axially displaceable side wall

61 ceiling wall on side wall 60

62 trapezoidal lower end of the side wall 60th

63 window in cylinder wall 54

64 dosing control chamber

65 Projecting edge on part A

66 peripheral wall outside at the edge 65

67 internal thread inside on peripheral wall 66th

68 adjustment ring

69 peripheral wall on adjusting ring

70 extension on movable wall

71 Perimeter wall of the Au sgu ss attachment 40

72 window in adjusting ring 68, to display the adjustment position

Claims

claims

1 . Dosing device for a nozzle for dispensing defined doses from a container or hose, comprising a spout which can be screwed on or pushed open, optionally with a separate lid, which has a closure body (41; a variable volume metering control chamber (64) which is filled to empty when empty, and that the metering control chamber (64) is defined by two stationary (54, 52; 4; 24) and two sliding walls (60; 61, 5, 15) is delimited by two mutually parallel, arbitrarily shaped side walls (54, 60, 4, 5) running parallel to each other on the closure body (41, 1), one (60; another (54; 4) is slidably mounted in the axial direction to the neck on the closure body (41; 1), and in that the side wall (54; 4) stationary on the closure body (41; angled bottom wall (52; 24), which adjoins the movable side wall (60; 5), and the movable side wall (60; 5) at its mouth facing the mouth of the container forms a ceiling wall (61; 15) projecting towards it at an angle the stationary side wall (54; 4) connects, the variable volume enclosed by all four walls (60, 61, 54, 52; 5, 15, 4, 24) forming the metering control chamber (64), and in the very direction the mouth of the container neck extended position of the movable side walls (60, 61, 5, 15), the spout hole (45, 3) of the top wall (61, 15) is sealingly covered.

2. dosing device for a nozzle for dispensing defined doses from a container or hose according to claim 1, characterized in that the closure body (41) is cylindrical, for use in the interior of a nozzle, and the dosing control chamber (64) in Inside of the closure body (41) is designed asymmetrically by their cross section at right angles to the cylindrical closure body (41) Segment of a circle, wherein the circular portion of the stationary side wall (54) of the closure body (41) is formed, and the secant from the sliding side wall (60), and this displaceable side wall (60) with its two side edges in the axial to the neck extending grooves (59) on the closure body (41) is guided, and that on the side of the displaceable side wall (60) facing away from the metering control chamber, the closure body (41) down to at least one flow opening (57) to the displaceable Connects sidewall (60) and encloses a running in the axial direction ventilation tube (58) which extends at least over the entire height of the closure body (41).

Dosing device for a nozzle for dispensing defined doses from a container or hose according to claim 2, characterized in that the closure body (41) with its upper, circular edge in a spout attachment (40) can be inserted, which is a continuous, orthogonal to Having closure body axis extending disc (44), with a spout hole (45) which after placing the spout attachment (40) on the closure body (41) with the spout (51) in the disc (50) on the closure body (41) Aligns while the disc (44) on spout attachment (40) at its periphery a vent hole (46) which is aligned with the upper end of the vent tube (58) on the closure body (41), and further that on the outside of the disc (44) of the spout attachment (40) a spout beak (48) is integrally formed.

Metering device for a nozzle for dispensing defined cans from a container or hose according to one of the preceding claims, characterized in that the closure body (41) has at least one window (63) on the side of the metering control chamber in the upper edge region along the circumference, for the sudden filling of the metering control chamber (64) in the final phase of its filling during pouring, so that the top wall (61) of the metering control chamber (64) closes the pouring hole (51) in the disc (50). Dosing device for a nozzle for dispensing defined doses from a container or hose according to one of the preceding claims, characterized in that the closure body (41) has a circular edge up to the mouth of the ventilation tube (58), which on the underside of the spout -Attachment (40) is insertable into a corresponding circular groove and in this on formed wall segments (47) with retaining means einklickbar, wherein radially outside the disc (44) is formed a cap whose peripheral peripheral wall (71) on its inside with a Internal thread (42) or is equipped with a bead, for screwing or bouncing on a fitting of a container or hose to be fitted.

Dosing device for a nozzle for dispensing defined doses from a container or hose according to one of the preceding claims, characterized in that the closure body (41) consists of three parts (A, B and C), namely a first part (A) the stationary side wall (54) and the bottom wall (52), and this part (A) is insertable into the neck of a container to be equipped by having a projecting edge (65) and a peripheral wall (66) projecting downwards at its periphery , which is equipped with an internal thread (67), and in that on the upper end of this first part (A), an adjusting ring (68) placed, which is located on the inside of the first part

(A) extends along the inner wall down, rests on top of the edge (65) and outside with a separate peripheral wall (69) on the peripheral wall (66) of the first part (A) and this includes, and wherein said adjusting ring (68 ) is rotatable about the axis of the closure body, whereby a second part (B), which is located in the interior of the first part (A), via a helical guide groove in the axial direction upwards or downwards is displaceable by the second part

(B) is not rotatable, wherein the stroke of the third part (C), namely the displaceable side wall (60) with lid wall (61) variable and thus the dose between a minimum and a maximum infinitely is adjustable.

7. Dosing device for a nozzle for dispensing defined doses from a container or hose according to claim 6, characterized in that on the third part (C), namely the displaceable side wall at its lower end an upwardly projecting extension (79) is integrally formed, at the top setting position of the second part (B) in the adjusting ring (68) on the first part (A) finds a stop, so that the cover wall (61) of the displaceable side wall (60) forms a distance from the spout hole (51) and allows a continuous pouring ,

8. dosing device for a nozzle for dispensing defined doses from a container or hose according to one of claims 6 to 7, characterized in that in the cover surface of the adjusting ring (68) a window (72) is excluded, to release the view of the projecting edge (65) of the first part (A) lying below the adjusting ring (68) and thus the setting position relative to the first part (A) lying underneath can be displayed.

9. dosing device for a nozzle for dispensing defined doses from a container (22) or hose (29) according to claim 1, characterized in that it includes a closure body (1) with sealing closing means (7), wherein the dosing of only two Consist of components, namely a fixed cup in the closure body (1), hollow cup (4) with bottom (24) and on the bottom side of the cup (4) arranged in its side wall window (12), to form two stationary boundary walls (4, 24) of a metering control chamber (64), and a cap-shaped metering piston (10) with an on the top of the cap extending in the axial direction extension (5.1, 5.1), which metering piston (10) with extension (5.1 1) in the cup (4) and in this case its extension (5.1 1) covers and closes the window (12) and thus forms two displaceable boundary walls (15, 5) of the metering control chamber (64), the metering piston (10) in the Cup (4) axially movable and with his extension (5.1 1) against the outside of the window (12) out with a limited measure is pivotally, so that it forms a swung open state with the cup (4) an open valve while its lower edge the cup (4) a distance (D2) overlaps.

10. dosing device for a liquid supply from a container (22) or hose (29) with nozzle according to claim 9, characterized in that the cup (4) forms a hollow cylinder, and that the cap-shaped metering piston (10) has a cylindrical shape, with an extension (5) extending on the upper side of the cap in the axial direction and forming an extension of the cylindrical wall over an angular segment of 90 ° to 200 °, wherein the metering piston (1.

Dosing device for a liquid supply from a container (22) or hose (29) with nozzle according to claim 9, characterized in that the cup (4) forms a hollow cylinder, and in that the cap-shaped metering piston (10) has a cylindrical shape with a on the top of the cap extending in the axial direction extension (1 1) of the secant over the lid (15) of the cylindrical metering piston (10).

Dosing device for a liquid supply from a container (22) or hose (29) with nozzle according to claim 9, characterized in that cup (4) has a polygonal, that is three- or polygonal cross-section with rounded corners, and that the cap-shaped dosing piston ( 10) has a matching polygonal cross-section with rounded corners, with an on the top of the cap extending in the axial direction extension (5,1 1).

Dosing device for a liquid supply from a container (22) or hose (29) with nozzle according to one of claims 9 to 12, characterized in that the window on the cup (4) is formed by its peripheral wall on one side in the lower part of the cup cut away and the bottom (13) of the cup (4) at the outer edge corresponding to the wall thickness of the peripheral wall in the radius is reduced, with incisions (14) in wall thickness on both sides in the bottom (13) in a piece continue, and that extension (5 ) forms on the lid (15) of the metering piston (10) a half-cylinder, which closes this window in the state when the extension (5) over the window, this closes.

14. dosing device for a liquid supply from a container (22) or hose (29) with nozzle according to one of claims 6 to 10, characterized in that the window on the cup (4) is formed by the bottom-side region of the cup approximately to the Half of its one side is cut away, and that the extension (1 1) on the lid (15) of the metering piston (10) is flat and is arranged so that this window in the state when the extension (1 1) is above the window This one is closing.

15. metering device for a liquid supply from a container (22) or hose (29) with nozzle according to one of claims 9 to 14, characterized in that it comprises in the device body (1) a cup (4) and the metering piston (10) Rotary body (2) includes, which has a protruding beyond the cup bottom limiter (6) in the form of a continuous or unsteady rising web (28) which for the cup (4) upwardly movable metering piston (10) with its extension (1 1) forms a stop, wherein the rotary body (2) in the device or closure body (1) is rotatable, so that the extension (1 1) with its upper edge depending on the rotational position of the limiter (6) at different locations on the underside of the web ( 28) abuts, and that the rotary body (2) has at its periphery a radially projecting cam (24) which between two opposite, inwardly projecting stop cams (26,27) on the device body or Verschl is rotatable back and forth, so that the range of rotation of the rotary body (2) between a setting for a maximum dose and a minimum dose is infinitely adjustable limited.