BR112019024255B1 - DOSING DEVICE FOR LIQUID SUPPLY WITH BOTTLE - Google Patents

Abstract

The dosing device is provided for a neck for pouring defined quantities from a container or hose. It consists of a nozzle attachment that can be threaded or fitted onto the neck, and which can optionally be closed by a separate cap, and has a metering control chamber (14) with variable volume. As a distinguishing feature, this chamber fills with emptiness when pouring. Said chamber is formed by the space between a restrictor of the control chamber and the interior of a dosing piston (10), and is filled with liquid when pouring a dose, while the liquid in (D1) flows downwards passing through the dosing piston (10) to the nozzle (3). Finally, the downwardly displaced metering piston (10) closes the spout (3) when the control chamber (14) is full. The dose amounts to be poured are adjustable in that the trajectory of the dosing piston (10) can be limited on its side facing the container or hose. The control chamber limiter is variably axially displaceable with respect to the fitted neck dosing device, and can be fixedly held in any position. (Figure 5)

Description

[0001] The invention relates to a dosing device for supplying liquid from a container with a neck, for example a plastic bottle or PET bottle, or a hose with a neck, in dosed portions.

[0002] Caps or dosing devices for metered dispensing of liquids are known in various designs. A very well-developed dosage lock is known from WO 2015/150250 A1, published by the same applicant on October 8, 2015. It is provided for a neck for dispensing defined doses from a container or hose, and consists of a fastening spout that can be threaded or snapped onto the neck and can optionally be closed with a separate cap. A closing body is held therein, which contains a movable dosing means for dispensing a certain dose per dispensing cycle. As a characterizing feature, the dosing medium forms a dosing control chamber with variable volume, in which this dosing control chamber is not emptied from full to empty during the pouring of a dose, but is filled from empty to full. This metering control chamber is delimited by two stationary walls and two displaceable walls, in which two mutually parallel arbitrarily molded side walls extending axially towards the neck are present in the closing body, one of which is displaceably mounted relative to the other. in the axial direction to the neck in the closure body. The stationary side wall in the closure body forms, at its end facing the container, a base wall projecting therefrom at an angle and connecting to the opposite movable side wall. The opposite movable side wall, on the other hand, at its end facing the mouth of the container neck, forms a top wall projecting towards it at an angle and in turn connects to the stationary side wall. The variable volume enclosed by all four of these walls then forms the metering control chamber. The following occurs for a dosing cycle in the case of an inverted position of the dosing device: The movable side walls and the movable top wall starting from its uppermost position - in this inverted position - and with pouring space filled below the dispensing wall movable top, are initially moved purely axially downwards by increasing the effective pressure above the top wall, with filling of the metering control chamber and simultaneous outflow of liquid from the space below the metering piston, which is formed by the movable side wall and its top wall, and pushes into the spillage space during spillage. This occurs until the moving parts close to the spill hole, in which case the spill hole is sealingly covered by the top wall. Then the pressure is reduced again above the top wall, and this moves up again, with renewed filling of the spillage space due to the downward flow around the movable side wall and with simultaneous emptying of the metering control chamber until the moving parts have reached their initial state, and the dosing cycle is thereby completed. The path displaced by the movable walls, i.e. the movable side wall and the top wall projecting therefrom, thereby determines the dosing volume. As soon as this control chamber is filled, the outflow from the metering lock ceases. However, the same dose is always dispensed.

[0003] Undisputedly, in this document WO 2015/150250 A1, a variable adjustment of the pouring volume is also mentioned, and a variant for implementation is also disclosed. For this proposal, a limiter 6 with its helical frame 28 is provided, as can be seen in FIG. 15. In this figure, the rotating body 2, otherwise connected in one piece with the stop 6, is omitted. Therefore one can see in this figure the two stop cams 26, 27 for limiting the rotational range of the rotating body 2. If the limiter 6 with the rotating body 2 is rotated relative to the device body 1, this causes a continuous adjustment of the dosage amount between a minimum and a maximum. FIG. 16 then shows the dosing device for this continuous adjustment of the dosage amount seen from below, with an adjustment for a minimum dosage amount. The rotating body 2 has here been turned clockwise until the cam 24 collides with the stop cam 27. The stopper 6 is then positioned so that the extension 11 on the metering piston 10 can only move a minimum distance upwards . Conversely, FIG. 17 shows the dosing device for continuously adjusting the dosing amount seen from below, with the setting for the maximum dosing amount. The rotating body 2 has here been turned counterclockwise on the closing body 1 until its cam 24 on the stop cam 26 encounters a stop. In this case, the limiter 6 on the upper side of the dosing device is in such a position that the extension 11 on the dosing piston 10 can move in a maximum trajectory. It is clear that all intermediate positions between the two stop cams 26, 27 are adjustable. FIGS. 31 to 35 show a very special embodiment of this metering lock, in each case in a partial section, so as not to cover the view inside. This allows continuous adjustment of the dosing volume or the volume of the dosing control chamber between a minimum and a maximum, and also the adjustment of intermediate positions where the dosing lock ensures free outflow without dosing.

[0004] Furthermore, a liquid and granulate dispenser is known from US 5,280,846 A. This has a spindle with a container for carrying out a apportioning principle. This container is filled by inversion, and is emptied after turning it again through 180 degrees, dispensing a portion, and in each case only as much as the container can hold. A liquid and granulate dispenser in accordance with US 5,280,846 A never spills or squirts more than this container which acts as a dosing chamber. The spindle merely fits this relatively small metering chamber. In addition, the spindle engages directly with the element to be controlled and produces plate sealing on dosing and makes cup measuring difficult.

[0005] It is the task of the present invention, proceeding from the above solutions and, in particular, proceeding from WO 2015/150250 A1 and the dosage closure disclosed in detail therein, as well as in consideration of the solution according to US 5,280 .846 A, to create a metering lock that provides a continuously variable metering volume. This change in dosing volume should be easily adjustable, and the dosing volume should be scalable, with different volumes displayed on a scale in the dosing lock. The basic properties of the already known dosage lock according to WO 2015/150250 A1 must be maintained. This means that even though this further developed metering lock must manage with a minimum number of simple spraying parts with no spring element, and that these parts are extremely easy to assemble, additionally that their application is foolproof, that the metering lock it does not clog, and an adjusted dosage can be safely poured by simply tilting it into a pouring position, or by inverting and lightly squeezing the container. Similarly, pouring from a bellows associated with a hose is to be made possible, from which liquid is supplied. Dosing of any adjustable volumes should only be reliable whether the container is full, half full or almost empty. The dosing amount must be continuously adjustable between a minimum and a maximum, where the maximum must be greater than the total volume of the complete dosing lock. In another setting, the closure must not leak any media at all, thus maintaining a tight fit, and in a still further setting, it must enable continuous non-dosed pouring. Finally, this dosage lock, in comparatively large dispensed doses, should be much lighter, about half as heavy as the one according to WO 2015/150250 A1, and furthermore, this dosage lock should be much cheaper to produce than known solutions.

[0006] This objective is achieved by a dosing device for a neck for pouring defined doses from a container or hose, consisting of a nozzle attachment that can be threaded or fitted onto the neck, and optionally can be closed with a separate lid, with a variable volume metering control chamber which is filled from empty to full during pouring, in which this metering control chamber is formed by the space between a control chamber restrictor and the inside of a piston of dosing, which fills during pouring of a dose, in which the dosing piston closes the nozzle when the control chamber is full, and which is characterized by the fact that the amounts of dose to be poured are adjustable in that the trajectory of the metering piston, on its side facing the container or hose, may be limited, in that a spindle is rotatably mounted to the metering device in an axial shaft socket, and has a rotary knob at the top, which projects sealingly in the front from the dosing device, and that the spindle engages with its thread with its end region in the threaded sections inside an adjustment sleeve, and the adjustment sleeve is connected on the outside with a restrictor from the control chamber to the adjustment piston. dosage, so that after rotation of the spindle, the control chamber limiter is axially displaceable in its position and, in this way, the position for starting the pouring of a dose in each adjustment position can be limited so that the trajectory of the metering piston, and thus the filling volume of the control chamber, can be selected.

[0007] Compared to WO 2015/150250 A1, the newly claimed mechanism with spindle and bar is much cheaper to produce and thus a much wider range of dosage amounts can be understood. The complexity of the system is reduced very significantly, and this makes the metering closure even more reliable and accurate. The solution with a rotary knob with arrows for marking the dosages is therefore intuitively understandable and clearer. This solution with a spindle as claimed is not even half as heavy as the adjustment principle according to WO 2015/150250 A1. As a characterizing feature, the contents of the control chamber itself are not poured, which has the advantage that the pouring dose can be a multiple of the contents of the control chamber. In this way, doses can be dispensed that are many times greater than the total closure volume, which no previous closure is allowed. This very sophisticated specific way of implementing continuous adjustability with a spindle/bar is not known in the prior art. The spindle, which may still be hollow, is used to change the small control chamber and therefore to adjust the pour dose up to a multiple of the total closure volume.

[0008] A spindle may be known in principle, but acting in accordance with US 5,280,846 A would render the present system inoperable because the typical chair movement part of the system would find no place and, beyond which, would render the actual pouring impossible . US 5,280,846 A represents a completely different principle, which is hardly comparable with the present principle, because with the present system it is not necessary to first fill a dosing chamber each time, which is then simply emptied, whereby the amount of maximum dosage corresponds to the volume of the dosage chamber.

[0009] Various embodiments of this dosing device and the parts of this dosing device for a neck for pouring defined doses from a container or hose will be described below with reference to the drawings, and the function of these parts and operation of these dosing devices, and , in particular, the mechanism for adjusting the dosage amount, are expounded and explained in detail.

[0010] The drawings show:

[0011] Figure 1: The first stationary part of the dosing medium, namely the glass with window;

[0012] Figure 2: The second moving part of the dosing medium, namely the dosing piston with extension;

[0013] Figure 3: A dosing device with this dosing medium, shown in an axial section, in an inverted position, with the dosing piston in its uppermost location in the cup, ready to dispense a dose;

[0014] Figure 4: The dosing device with this dosing means, shown in an axial section, in an inverted position, with the dosing piston in its downward mode, when dispensing the dose;

[0015] Figure 5: The dosing device shown with this dosing medium in an axial section, in an inverted position, with the dosing piston in its lowest location, after dispensing the dose;

[0016] Figure 6: The dosing device with this dosing means, shown in an axial section, in an inverted position, with the dosing piston in its lowest location, after releasing pressure from the container and, consequently, of the dosing piston articulated in the cup due to atmospheric pressure;

[0017] Figure 7: The dosing device with this dosing means, shown in an axial section, in an inverted position, with the dosing piston in its uppermost location, after venting the container and reducing the articulation due to the design geometric parts;

[0018] Figure 8: A view of a dosing device dosing according to this principle, with a dosing device for selectable dose amounts, seen from above;

[0019] Figure 9: The dosing device according to FIG. 8 in a bottom view;

[0020] Figure 10: The dosing device according to FIGS. 8 and 9 seen obliquely from below;

[0021] Figure 11: Parts for adjusting the dosage seen from the side, partially shown in a section;

[0022] Figure 12: The parts for adjusting the dosage shown obliquely from above;

[0023] Figure 13: The parts for adjusting the dosage shown obliquely from below;

[0024] Figure 14: The dosing device assembled with the device for adjusting the dosage amounts shown in a section seen from the side, when adjusting a minimum dose;

[0025] Figure 15: The dosing device assembled with the device for adjusting the dosage amounts shown in a section seen from the side, when adjusting a maximum dose;

[0026] Figure 16: The dosing device assembled with the device for adjusting the dosage amounts in a perspective in partial section seen obliquely from above, when adjusting a minimum dose;

[0027] Figure 17: The dosing device mounted with means for adjusting the dosage amounts in a perspective in partial section seen obliquely from below, when adjusting a minimum dose;

[0028] Figure 18a-c: The dosing device for continuously adjusting the dosing amount, with adjustment for a maximum dosing amount in a) seen from the side, b) seen in a partial cut obliquely from above, and c) seen in a cross-section of the side;

[0029] Figure 19a-c: The dosing device for continuously adjusting the dosing amount, with adjustment for a minimum dosing amount in a) seen from the side, b) seen in a partial cut obliquely from above, and c) seen in a cross-section of the side;

[0030] Figure 20: The dosing device in a diametric section in a fit where a continuous output flow is made possible;

[0031] Figure 21: The dosing device seen obliquely from above, with the adjustment for a continuous output flow;

[0032] Figure 22: The dosing device shown in a section along the spindle axis, for dispensing the smallest possible dose;

[0033] Figure 23: The dosing device shown in a section along the spindle axis, for dispensing the largest possible dose;

[0034] Figure 24: The dosing device shown in a section along the spindle axis, for a continuous output flow;

[0035] Figure 25: A detailed view of the lower end of the insert and the ring below, just before its stop.

[0036] First, the general and very special action of the dosage will be shown, as it is the subject matter of WO 2015/150250 A1. FIG. 1 shows the first stationary component of the dosing medium, namely the hollow cylindrical cup 4 with side window 12. In essence, it is merely a hollow cylinder, which is thereby closed at the top with a lid 13, in which this lid 13 is flat in the example shown, but may also have a shape that deviates from planar. Its window 12 is recessed at the upper end in the peripheral wall and extends here over half the circumference. Lid 13 is shortened in radius at its edge in the outer edge region, which extends along the upper window edge, by the wall thickness of the peripheral wall. Its slightly outer inwardly spaced edge then extends on both sides for somewhat more than half the circumference, so that on both sides of the window 12, incisions 14 are formed in the lid 13. On its inner side, guide ribs are formed in the hollow cylinder of the cup 4 and extend in the axial direction.

[0037] The second movable component of the dosing medium, namely a dosing piston 10 with extension 5 as shown in FIG. 2, can be inserted into the hollow cylindrical cup of FIG. 1. This metering piston 10 forms a chair type which is covered with a lid. At the bottom, it forms a hollow cylinder 19, which is open at the bottom, and its outer wall extends upwards beyond the upper end face 15 of the hollow cylinder 19, and forms an extension 5 in the form of a free-positioning segment of a peripheral wall. This extension 5 extends here over about 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. graphic comparison to a chair, this extension 5 forms the back of the chair, 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 operates 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 it.

[0038] Below, the dosing operation is described step by step and explained. FIG. 3 shows the metering device or metering lock in an axial section, in an inverted position, with the metering piston 10 in its uppermost position within the cup 4 in this illustration, ready to dispense a metered portion. In this position, the space 21 has been filled below the metering piston 10 with liquid from the container 22, with which the metering lock is equipped. However, it cannot escape because little or no air can flow through the lower nozzle 3. The lack of pressure compensation and the viscosity prevent the penetration of air and therefore also the outflow of liquid through nozzle 3. The start of the dosing cycle is described from this point onwards, with the position of the piston from dosage 10 as shown. It is now important to pour this metering portion inside and below the metering piston 10 to the outside. For this proposal, a higher pressure must be generated inside the container 22, or in the case of a hose inside the hose, than that which prevails outside the container, hose, and closure, i.e., a higher pressure than than atmospheric pressure. This is done by pressing the container 22 together with one or both hands, and thereby squeezing it lightly. In the case of a hose for liquid supply, this can be done by installing a hose valve on the hose at its end region in front of the metering lock, the valve opening in elastic compressible bellows, which then opens. into a bottleneck, which is finally equipped with the dosing device. The more the container or the bellows are squeezed when the hose valve is closed, the faster the dispensing of the dosing quantity, which in a typical dimensioning of the dosing device has a volume of 2 ml to 90 ml. Naturally with different sizing, or enlarging or reducing the inlet hole (12) in the control chamber limiter 31 in the control chamber, the dosage amount can be made larger or smaller. Liquid is poured through the main channel adjacent to the metering control chamber until the control chamber is full and the pouring hole is closed.

[0039] The liquid contents of the container 22, after squeezing the container or the bellows, push from above on the cap 15, thus, by analogy on the seating surface of the chair of the analogous chair that the metering piston 10 forms. Below the cap 15, there is a lower pressure than above the metering device because the main channel forms a bottle neck close to the metering control chamber. Thereby, the metering piston 10 moves downwards within the cup 4 as shown in FIG. 4, and pushes the metering portion of the enclosed liquid below through the spout 3 to the outside. The space above the lid 15 forms a metering control chamber 14, which in the state as shown in FIG. 3 initially encloses no volume, but the volume grows continuously due to the downward movement of the metering piston 10, and in the lowest position of the metering piston 10 it finally reaches a maximum. The space of the metering control chamber 14 is limited by a total of four walls, namely two stationary walls and two movable walls. Specifically, there are two mutually parallel sidewalls extending in the axial direction towards the neck, one of which 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 cap 15 of the metering piston, or the seat surface of the similar chair as a displaceable boundary wall. Bottom 24 or bottom wall projects at an angle from cup wall 4, and lid 15 projects here at right angles from extension 5. The variable volume enclosed by all four walls 15, 5 , 4, 24 forms the metering control chamber 14. When the container is squeezed, the metering piston is pushed downwards, and the volume of the metering control chamber increases, and is simultaneously filled from above. The dosing device is again shown in FIG. 4 in an axial section, with the metering piston 10 on its downward path within the cup 4 during dispensing of the metering portion. In the position shown, the metering piston 10 has covered about one-fifth of its downward path. The semi-circular extension 5 on the metering piston 10 nestles within the inlet window or hole 12 against the inner wall of the cup 4, and closes the gap approximately in a liquid-tight manner. The pressing of the metering piston 10 due to the higher pressure above than on its underside continues until the metering piston 10 finds a stop below the inner edge 23 of the nozzle 3.

[0040] The lowest end position of the metering piston 10 is shown in FIG. 5. It shows the metering device or metering lock in an axial section, with the metering piston 10 in its lowest position, after dispensing the metering portion. Even just before reaching this position, the liquid also drains out of the container beyond the extension 5, thus, by analogy behind the back of the chair, under the container through the space behind it. The important distance here between the back of the extension 5, or by analogy, the back of the chair to the inner wall of the hollow cylindrical cup 4, is indicated here with D1. In the position shown, the closure is sealingly closed, whereby the lower edge of the metering piston rests sealingly on the rim 23 on the inside of the spout 3, and closes the same. The dosing is ultimately effected by the simultaneous outflow of the liquid during the simultaneous filling of the dosing control chamber 14, and the dosed pouring is finally stopped due to closure by a portion of the dosing control chamber 14. So that the pouring a dose of liquid proceeds, 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 the step for this, the dose is dispensed through nozzle 3.

[0041] Now it is time to prepare a new portion of the liquid for metered dispensing or to load it into the metering chamber of the metering piston 10 from the liquid supply. For dose dispensing, the container is compressed, or in the case of a supply hose, integrated bellows are compressed until the metering piston 10 is depressed all the way and then seals the container closed. If the container 22 or bellows are then released, it elastically regains its shape and thereby creates a negative pressure relative to the prevailing atmospheric pressure outside. As a result, there is excess pressure acting on the underside of the lid 15 and on the analogous underside of the chair seating surface which is formed by the metering piston 10. But now because the metering piston 10 inside the cup 4 is intentionally seated with a little paper, it immediately produces in the direction of no resistance, and that is in the pivotal direction behind the back of the analogous chair.

[0042] In this way, the extension 5 leans slightly outwards, as shown by the arrow in FIG. 6. This lateral movement or inclination of the metering piston 10 causes it to act together with the cup 4 as a valve. Thus, it not only performs a pure function as a piston and device for changing the volume of the dosing control chamber, but also performs a valve function. Due to the gaps occurring as a result of the deliberately chosen paper, and their widening due to the inclination of the metering piston 10 in the hollow cylindrical cup 4, air can flow from below through these gaps into the container 22 or bellows, and ventilate the same. The liquids flow in the same volume from the container 22, or in the case of a hose from its elastic bellows, through the gaps between cup 4 and metering piston 10 down into the metering chamber. This starting position for filling the metering chamber is shown in FIG. 6. It shows the metering closure in an axial section, with the metering piston 10 in its lowest position, after pressure relief from container 22, and subsequently with the metering piston 10 pivoted due to atmospheric pressure inside the container. cup 4. Given a persistent and prevailing pressure difference, however, the metering piston 10 now moves upwards in the hollow cylindrical cup 4 from this position, because the prevailing atmospheric pressure below its cap 15 is greater than the pressure prevailing due to the elastic recovery of the container 22 or bellows inside it and thus above the lid 15. The upward movement of the metering piston 10 continues until its surface of the lid 15 impinges on the inside of the bottom 24 of the hollow cylindrical cup 4 Its extension 5 has thus been moved upwards over and through the inlet window or hole 12 in the cup 4, and now extends beyond the cup 4 into the container, or in the case of a hose, protrudes into the neck of the hose.

[0043] The terminal position finally assumed is shown in FIG. 7. It shows the metering device or metering lock in an axial section, with the metering piston 10 in its uppermost position, after venting from container 22 or hose bellows. In the course of the upward movement of the metering piston 10, its inclination relative to the container axis was continuously reduced. The inclination of the metering piston 10 is therefore smaller in this terminal 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 piston 10 on the side of its extension 5 with the upper edge of the hollow cylindrical cup 3 by a certain distance, which is indicated here in FIG. 11 with D2. So that the inclination of the metering piston 10 is reduced in the upper region of its trajectory, and finally limited in the terminal position, so that the terminal position is adjusted, ribs 18, 17 are mounted on at least one outer side of the metering piston dosage 10, which are visible in FIG. 5, and which act as guides. During the full upward movement of the metering piston 10, in counteraction for venting the contents of the container, liquid therefrom can move through the gaps around the metering piston 10 in the region below it and fill this space. As soon as there is again pressure on the outer walls of the container 22 or the bellows, their internal pressure again rises above atmospheric pressure. Again, the metering piston 10 now acts as a valve and closes the gaps through which liquid from the container 22 or bellows could previously travel in the metering space. The same effect occurs when the dosing device is pivoted upwards. For example, by lifting a bottle on which the dosing device is mounted. The effect in this case is caused by gravity rather than negative pressure.

[0044] In summary, therefore, proceeding from the lowest position of the metering piston 10 and with a container 22 or bellows pressed together as shown in FIG. 9, the metering piston 10 is first forced to pivot due to the release of the canister or bellows, and thereby producing a negative pressure relative to atmospherics, to the position according to FIG. 6, and then to raise because higher pressure acts below it than above it. During this movement, liquid flows through the resulting gaps in the metering chamber, but is held there due to pressure conditions. As soon as the metering piston 10 with its cap 15 collides with the top of the cup, as shown in FIG. 7, the dosing chamber is maximally filled. Now pressure can again be produced in the container 22 or bellows by tightening. This leads to the alignment of the metering piston 10 on the axis of the cup 4 and, subsequently, to the lowering of the metering piston 10 and to the dispensing of the portion of liquid previously held under its lid 15.

[0045] The previously presented components can be shaped and dimensioned differently, and each component can if necessary also be composed of several parts, although an advantage of this metering device, even in its embodiment as a metering closure, is the fact that it can be produced from just these two components, namely the cup 4 and the metering piston 10.

[0046] Essentially, in the special embodiment shown below, it is only a matter of the way in which a dosing device, such as the one described and explained above, the dosing amount is adjustable. For this proposal, FIG. 8 first shows the top view of a dosing device, which doses according to this principle, but with a special dosing device for selectable dosing amounts. Spout 3 is seen with its spout 25. At approximately the center of the metering device, which may be screwed on or fitted onto a container neck like a cap, is seen a hollow rotary knob 8, which is formed on top of a hollow spindle 6, which is seen here projecting from the bottom of the metering device. On the periphery around the knob 8, a scale number 26 is shown, which here goes from 1 to 9. On the knob 8, a pointer 27 is formed, which here points to the number 1. The knob 8 can be rotated clockwise from the position shown for the digit 9, whereby the spindle 6, at whose upper end it rests, is rotated accordingly. The stops 28 act as stops for the pointer 27.

[0047] FIG. 9 shows this dosing device according to FIG. 8 seen in a view from below. As can be seen here, the spindle 6 sits in an unthreaded socket 2, in which it is rotatably mounted. Further below, spindle 6 is enclosed in a female threaded fitting sleeve 30. On the outside of this fitting sleeve 30, a tube is formed, which includes it for forming the control chamber, so that it is a restrictor of the control chamber 31. Additionally, side windows 35 can be seen in this tube of the control chamber 31. And finally, the sleeve 36 is shown with its female thread 32, by means of which the dosing device with this sleeve 36 can be screwed onto the threaded neck of a container or a bottle.

[0048] FIG. 10 shows this dosing device seen obliquely from a different perspective, with all the parts already described above, with the addition of the spout spout 25. In FIGS. 11 to 13, the spindle 6 is shown with its rotary knob 8 and pointer 27, and below this each of the parts interacts with the spindle 6 in the three views, namely in FIG. 11 below the page edge seen from the side, in which the parts are shown in section, then in Figure 12 below the page edge, all parts in an oblique view from above, and finally in FIG. 13 below the page edge in an oblique view from below. The spindle 6 has an uncovered portion 29 with which it can be rotatably supported and held in a socket 2 as shown in FIGS. 9 and 10. The spindle 6 is enclosed with its stepped thread in a fitting sleeve 30, on the inner wall of which some threaded sections 33 are formed, which engage the spindle thread when the spindle 6 is threaded into this fitting sleeve 30. On the outside of the adjustment sleeve 30, a control chamber limiter 31 is formed, above which the metering piston 10 is arranged. Here it is in the form of a crown, but below the prongs of the crown is a disc 34, which is shown in the enlarged illustrations at the bottom. This metering piston 10 acts in the same way as the one already described above.

[0049] In FIG. 14, this dosing device is shown in assembled condition with the device for adjusting the dosing amounts in a side section, with setting of a minimum dose. As can be seen, the spindle 6 has been rotated until the adjustment sleeve 30 is moved to its uppermost position and with it the control chamber limiter 31. In FIG. 15 then this mounted dosing device is shown with the device for adjusting the dosing amounts in a section seen from the side, with setting of a maximum dose.

[0050] FIG. 16 shows the dosing device assembled with a device for adjusting the dosing amount again in a perspective view in partial section seen obliquely from above. Here, the minimum dose is set, with the adjustment sleeve 30 in its uppermost position, very close to socket 2 for spindle 6. The trajectory of the metering piston 10 in the metering control chamber 14 is consequently limited. FIG. 17 shows the same thing in a different perspective, namely, obliquely from below.

[0051] FIG. 18a-c show the metering device with a metering piston 10, which has a boundary wall 5, which is located in a plane extending axially to the metering device, as well as a boundary wall perpendicularly angled thereto, which it forms a semicircular disc 34. The function of this metering piston was described in detail at the beginning. With the mechanism shown here for adjusting the metering amounts, the displacement trajectory of the metering piston 10 is essentially changed in that its downward trajectory is limited, which is achieved by rotation of the spindle 6, and thereby height adjustment. of the control chamber limiter 31. In FIGS. 18a-c, the metering piston 10 is shown in its position where it impinges on the bottom of the control chamber limiter 31 with its circular half disk 34. In the case of an inverted container and inverted metering device, air passes through of the ventilation device, and ensures equalization of pressure inside the container, and the pouring starts from this position of the metering piston 10, with flow along the arrows shown. Liquid from the container can first flow out along the axial wall 5 of the metering piston 10, as well as through the windows 35, and then through the nozzle 3 to the outside until half of the circular disk 34 has taken up account of the windows 35 and the space below, or for the inverted position of the dosing device, then consequently the space above, the circular disc 34 of the dosing piston 10 is filled. During the pouring of a specific dose, therefore, the dosing control chamber 14 is filled, and as soon as it is full, the circular disk 34 closes the spout 3. Using the spindle 6, therefore, the starting position of the disk circular 34 of the metering piston 10 is adjusted and, consequently, the filling volume of the control chamber 14, which as a characterizing feature is filled instead of being emptied during pouring of a dose.

[0052] It is understood that the scale number 26 can also be calibrated to the dosing device 26 so that, for example, on a scale from 1 to 9, the corresponding number of 10-ml units of liquid are poured . Of course, the dose amounts belonging to the numbers are freely selectable, depending on the design and dimensioning of the dosing device. Instead of numbers, any symbols or markings can also be used.

[0053] A particular embodiment of the dosing device that also allows a continuous output flow is shown below. For this proposal, special marking is applied to the top of the dosing device. In FIG. 20, this special version is seen obliquely from above. For this proposal, the rotary knob 8 is turned to a special position, where its pointer 27 points to a mark 40, which indicates continuous pouring - or where there is no dosing, here in the form of a dosing cup, which is marked with a cross.

[0054] FIG. 21 shows the dosing device in this settlement for continuous pouring, seen in an oblique view from below. In principle, continuous outflow is realized, whereby the extension 5 and its cap 15 extending perpendicularly thereto can no longer reach the pouring hole due to an activatable displacement limit, so that the cap 15 can no longer more close the pouring hole and therefore keep it open. For this purpose, in the exemplary embodiment shown, rings 38 are formed on both sides of the extension 5, which meet a stop during upward movement of the extension 5 in a special height adjustable insert, which is visible in further illustrations. Thus, extension 5 cannot move far enough that it closes the outflow. As a result, a continuous output flow is made possible.

[0055] How precisely that is understood is revealed on the basis of FIGS. 22 to 25. FIG. 22 shows the dosing device for this proposal in a section along the spindle axis 6. On the spindle sits a socket 42 with female thread, which is guided within the dosing lock in a rotationally fixed manner. When spindle 6 is turned, which is triggered by rotation of knob 8, socket 42 is moved up and down. Socket 42 is connected to insert 41 so that the latter also moves up and down accordingly with socket 42. Extension 5 with its side rings 38 find a stop in its upward movement, or during pouring in its downward movement in the insert 41 depending on seating and stops, thereby limiting the movement of the extension 5. In the illustration shown, a minimum dose to be dispensed is set. Extension 5 can move from the starting position shown here during pouring, i.e. with an inverted dosing device, down into the pouring hole. During this movement of the extension 5 and the lid 15 projecting at right angles thereto, the liquid flows continuously around the extension 5 and above the lid 15 into the pouring hole, and out until the lid 15 in the extension 5 reach the spill hole and close it. This completes the dosage. For dispensing a new dose, the dosing device must be pivoted to an upright position and tilted once again.

[0056] Figure 23 shows the same view of the dosing device, but now with a settlement for the highest possible dispensed dose. The insert has been moved by turning the knob 8 and thus the spindle 6 has so far descended than a greater trajectory of the extension 5 and its cover 15 is made possible, compared with laying according to FIG. 22. During pouring, i.e. with an inclined dosing device, the extension 5 and cap 15 in turn move against the pouring hole, while the liquid continuously flows out, until the cap 15 abuts the hole spill and close it. Dosing is thus completed. For dispensing a new dose, the dosing device must be pivoted to an upright position and tilted once again.

[0057] Finally, FIG. 24 shows a third settlement, namely for continuous pouring. The liquid trajectory is marked with a thick arrow. The fluid flows around the extension 5 and the cover 15 which projects at right angles thereto, and passes through the pouring hole to the outside. The pouring can therefore proceed continuously, because in this seating, the movement of the extension 5 and cover 15 is turned against the pouring hole. For this proposal, after turning the rotary knob 8 to the position for continuous pouring - as shown in FIG. 20 - the spindle 6 is rotated far, that the socket 42 and its connected insert 41 is moved so far below that extension 5 with its two side rings 38 in this insert 41 which finds a stop earlier, and cannot move further into the hole of spillage. Therefore, there is always an open path for the outflow of liquid. In other words: Due to the delay of the extension 5 by collision of its rings 38 on the insert 41, the cap 15 is no longer allowed to move towards the pouring hole to the point where it closes the latter. In this way, the pouring hole is permanently left open. Liquid can therefore seep out continuously.

[0058] Finally, FIG. 25 details how one of the two rings 38 find a stop in the insert 41. During pouring, the extension 5 moves towards the insert 41 and as seen here, in the drawing there is barely 1mm left before the ring 38 collides with the insert 41, and the movement of the extension 5 and the cap 15 is stopped. The extension 5 with its lid 15 then ceases in a position where the lid 15 still keeps the pouring hole open, so that liquid can flow continuously.

[0059] List of reference signals

[0060] 1 device body

[0061] 2 spindle socket

[0062] 3 nozzle

[0063] 4 hollow cylindrical cup

[0064] 5 extension on the dosing piston

[0065] 6 spindle

[0066] 7 closing cap

[0067] 8 rotary knob for spindle 6

[0068] 9 adjustment element

[0069] 10 metering piston

[0070] 11 level extension on the metering piston

[0071] 12 window in the hollow cylindrical cup, inlet hole

[0072] 13 lid on the cup

[0073] 14 control chamber

[0074] 15 cap on hollow cylindrical dosing piston 10

[0075] 16 lateral rib on the dosing piston

[0076] 17 inclined surface on rib 16

[0077] 18 rib on the front of the chair-shaped metering piston

[0078] 19 chair seat surface

[0079] 20 chair backrest

[0080] 21 space 21 below the metering piston 10

[0081] 22 container/bottle

[0082] 23 inner edge of the beak 3

[0083] 24 cams as displacement limiters

[0084] 25 nozzle on nozzle 3

[0085] 26 number scale

[0086] 27 pointers

[0087] 28 stops for the sharpener 27

[0088] 29 empty section in the spindle

[0089] 30 adjustment sleeve

[0090] 31 control chamber limiter

[0091] 32 female thread for the external thread of a container neck

[0092] 33 threaded sections on the adjustment sleeve

[0093] 34 circular disk

[0094] 35 window in the control chamber limiter

[0095] 36 Sleeve with female thread 32 for container socket

[0096] 37 Filling hole in the control chamber limiter

[0097] 38 ring for continuous output flow

[0098] 39 ring stopper

[0099] 40 continuous output stream marking for rotary knob pointers

[00100] 41 insert

[00101] 42 insert socket

Claims (11)

1. Dosing device for a neck for pouring defined doses from a container or hose, consisting of a spout attachment which can be screwed on or pressed onto the neck, and which optionally can be closed with a separate cap, and having a dosage control chamber (14) with variable volume, which during pouring is filled from empty to full, in which said dosage control chamber (14) is formed by the space between a restrictor of the control chamber (31 ) and the interior of a metering piston (10), and in which the metering control chamber (14) is filled when pouring a dose, and in which the metering piston (10) closes the spout (3) when the control chamber (14) is full, characterized in that the control chamber limiter (31) is axially displaceable in its position, that the dosage amounts to be poured can be adjusted by the control chamber limiter ( 31) in which the trajectory of the dosing piston (10) can be limited on its side facing the container or hose, in which a spindle (6) is rotatably mounted in the dosing device in an axial spindle socket (2), and has a rotary knob (8) at the top, which at the front project sealingly from the dosing device, and which the thread of the spindle (6) engages with its terminal region in the threaded portions (33) inside a sleeve adjustment sleeve (30), and the adjustment sleeve (30) is connected on the outside with a control chamber limiter (31), so that after rotation of the spindle (6), the control chamber limiter (31) is axially displaceable in its position and, in this way, the position of the metering piston (10) for the beginning of pouring a dose in each adjustment position can be limited, so that the trajectory of the metering piston (10) , and thus the filling volume of the control chamber (14) is selectable. 2. Dosing device for a neck for dispensing defined doses according to claim 1, characterized in that the upper external side of the dosing device is provided with a number or symbol scale (26), and the rotary knob (8) on one side has a radially projecting pointer (27) so that it points to the symbol number or scale (26). 3. Dosing device for a neck for pouring defined doses according to claim 1, characterized in that the rotary knob (8) is equipped with radial gripping ribs. 4. Dosing device for a neck for pouring defined doses according to claim 1, characterized in that the nozzle (3), on the dosing device at a peripheral point, has a nozzle (25) for forming and pouring a stream of liquid. 5. Dosing device for a neck for dispensing defined doses according to claim 2, characterized in that the number or scale symbol (26) indicates a setting of the dosing chamber in which no dose limitation occurs, i.e. that is, the outflow is not interrupted by the dosing device. 6. Dosing device for a neck for pouring defined doses according to claim 1, characterized in that the number or scale symbol (26) indicates an adjustment of the dosing chamber in which the pouring opening is closed, i.e., no emptying can take place. 7. Dosing device for a bottleneck for pouring defined doses according to claim 1, characterized in that the rotary knob (8) or the spindle (6) is hollow, so that it acts as an equalizer of pressure during the pouring process, and air can flow into the container through it. 8. Dosing device for a neck for dispensing defined doses according to claim 1, characterized in that the rotary knob (8) or the spindle (6) is provided in an internal hole with a grid or sieve, to ensure that liquid cannot escape from the air hole during the pouring process. 9. Dosing device for a neck for pouring defined doses according to claim 1, characterized in that the maximum and minimum dosing quantity of the dosing device can be varied by enlarging or reducing an inlet hole (12) in the control chamber limiter (31), while basically maintaining the rest of the geometry. 10. Dosing device for a neck for pouring defined doses according to claim 1, characterized in that the dosing piston (10) includes a downwardly projecting extension (5) where in an adjustment position of the metering piston, the downwardly projecting extension (5) is limited in its trajectory to the spout, so that the cap (15) can no longer close the pouring hole and thus a continuous outflow is guaranteed . 11. Dosing device for a neck for dispensing defined doses according to claim 1, characterized in that the dosing piston (10) includes a downwardly projecting extension (5) having a lower edge with at least one laterally projecting collar (38) which, on a rotational adjustment of the knob (8) and the spindle (6) each find a stop in an insert (41), which is connected to a socket (42) which seats on the spindle (6), and is fixed in the metering device against rotation, so that after rotation of the spindle, the height position of the insert (41) is adjustable, and after abutment of the at least one ring (38) on the insert ( 41), the downwardly projecting extension (5) is limited in its trajectory to the spout, so that the lid (15) can no longer close it and thus a continuous outflow is ensured.