WO2020079660A1

WO2020079660A1 - Device for stirring or mixing drinks in a drinking cup or the like

Info

Publication number: WO2020079660A1
Application number: PCT/IB2019/058906
Authority: WO
Inventors: Vítor Gabriel GOMES FERRAZ
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-10-18
Filing date: 2019-10-18
Publication date: 2020-04-23
Anticipated expiration: 2021-04-18
Also published as: BE1026715B1; BE1026715A1

Abstract

Device for stirring or mixing a drink in a. drinking cup, characterised in that the device contains: - a base (3) on which a drinking cup (2) is or can be mounted; - a stirring element (10) which before use of the device can be mounted on the bottom (11) of the drinking cup (2) with a drink (31) and which in this condition can rotate freely around a vertical axis (X-X'); - a rotor (13) in the base (3) which is rotatable around a vertical axis (X-X'); - a magnetic coupling between the rotor (13) and the stirring element (10) which is such that the stirring element (10) is magnetically driven to rotate by a rotation of the rotor (13); - a control button (8) and a mechanical control mechanism (23) to rotate the rotor (13).

Description

Device for stirring or mixing drinks in a drinking cup or the like

The present invention relates to a device for stirring or mixing drinks .

Industrial devices for stirring and/or mixing drinks in large volumes exist. However, they are not usable in a domestic setting. They are far too bulky and expensive for this and they also need a drive motor.

Blenders and other devices to mix, for example, soups or fruit presses to press and/or mix fruit juices exist on a domestic scale.

Typically, these smaller devices are also equipped with an electric motor and these devices are still relatively bulky and take up a lot of room in the kitchen.

Furthermore, these devices are intended to prepare a liquid which can then be poured into a drinking cup, glass or other receptacle from which the drink can be directly consumed. This means extra cleaning, particularly because such devices have to be dismantled to a greater or lesser extent to clean them.

Hand mixers are also known that can be used to directly stir a drink in a drinking cup, but they also have a motor and are relatively bulky and cause extra work to clean them. Furthermore, such a hand mixer grinds the content of the drinking cup, which means such mixer is not suitable, for example, to stir tea with lemon or a coffee with lumps of sugar in it.

Shakers are also known for the manual shaking of cocktails. They are not very handy to use and are also relatively high in view of the fact they are composed of two cups which for the shaking are slid into each other's extension at their free edges . Such shakers are also not suitable for hot drinks as the expansion of the cups under the influence of heat could cause leaks between the cups . In this case too, the mixed cocktail is poured into a cocktail glass or the like.

For most of the aforementioned devices the user needs both hands to be able to use the device.

A table-top model as described in KR101.843002 of a device for stirring or mixing drinks in a drinking cup or the like with a drive which is manually powered by means of a lever pulled towards a lateral handle to rotate a rotor in the base of the device in a reciprocating manner, whereby the rotor is magnetically coupled to a stirring element in a cup which is fixed to the base, is also known .

A disadvantage is that the screw is moved in a reciprocating manner such that the result of the mixing is not ideal .

Another disadvantage is that the drinking cup is fixed on the base and therefore is difficult to clean. Another disadvantage is that the user runs the risk of hurting his hand or fingers between the lever and the handle .

Other examples of such devices with a magnetic coupling are known from JP.H06.269367 and from EP2.752.142, whereby in the first case the cup and the base are also connected to each other (vast?) and the device is therefore difficult to maintain and furthermore, a short crank has to be rotated to operate the device, which is very cumbersome, and whereby in the second case there is no magnetic coupling but rather a mechanical coupling with a through shaft to rotate the cup with a fixed stirring element, which allows the liquid to infiltrate into the drive mechanism and whereby, also in this case, the fingers can be crushed during use.

The invention envisages a new type of table-top device, without the disadvantages of the known devices and with a simple manual operation, whereby the new device is suitable for domestic use and which is intended to stir and/or mix small volumes of drinks in a drinking cup, mug or the like, for example to dissolve sugar, milk powder or the like or to mix different drinks, whether hot or cold, or to enhance the aromas and flavours of added herbs or infusions in the drink or the like.

To this end, the invention relates to a device for stirring or mixing a drink in a drinking cup, the device containing: - a base on which a drinking cup is mounted or can be mounted;

- a stirring element which before use of the device can be mounted on the bottom of the drinking cup with a drink and in this condition can rotate freely around a vertical shaft;

- a rotor in the base which is rotatable around a vertical shaft ;

- a magnetic coupling between the rotor and the stirring element which is such that the stirring element is magnetically driven to rotate by a rotation of the rotor;

- a control button and a mechanical control mechanism to make the rotor to turn .

With a device according to the invention a drink can be mixed in a drinking cup very easily.

Furthermore, the user only needs one hand, such that the other hand is free for other things.

When the cup with drinks is on the base, it suffices to put the stirring element in the drinking cup and to turn the rotor by giving the control button a manual impulse from its resting position and subsequently each time after the control button has returned to its resting position, to give this impulse a new impulse until the drink has been sufficiently stirred.

The magnetic coupling also drives the stirring element to rotate due to the rotation of the rotor. In other words, no motor or electricity are needed for the stirring. In other words, the device is an alternative for stirring with a spoon, but has the advantage that it can be stirred more powerfully without much effort .

If the drinking cup is separate from the base, the device can be used with any conventional drinking cup, glass or the like, and the base can be used successively by several people to stir their drink.

In that case, the cleaning is therefore limited to cleaning the drinking cup alone.

If the drinking cup is suitable for hot drinks, the device is also suitable to stir or mix hot drinks .

The device can be made relatively small with a base that has a height and a width of a couple of centimetres.

Preferably, the control mechanism contains a power- transmission coupling which is active when the control button is moved in one direction, but which is inactive when the control button is moved in the opposite direction, and a return spring which forces the control button and/or the control mechanism to a resting position when the control button is released.

In this way the device is easy to operate by repeatedly pushing and releasing the control button until the content of the cup is sufficiently stirred. Preferably, the coupling is made as a freewheel integrated in the rotor, whereby the rotor is provided with a sprocket with an internal saw toothing and whereby the rotor is mounted freely rotatable on its shaft and the shaft is provided with a driving gear and a carriage and with at least one pawl which is hingeably mounted on this carriage around a vertical shaft located at a radial distance from the shaft of the rotor, with the pawl engaging with the toothing of the sprocket, under the influence of a spring.

Such a freewheel is relatively simple to realise.

According to a preferred embodiment, the control mechanism contains a toothed rack which is connected to the control button and engages with a gear which together with a larger gear is attached to a vertical shaft which is rotatably mounted in the base, whereby the larger gear engages with said driving gear on the shaft of the rotor.

In this way with relatively little manual effort and with only small movements of the control button the drink can be intensely stirred.

The control button can be rotatably mounted around a vertical shaft in the base whereby the control button partially protrudes from the base, such that the base can be held with one hand and at the same time the control button can be very simply and easily pushed in with the thumb on the same hand. Alternatively, the base can be made with an upward facing handle whereby in that case both a control button and a push button are integrated in the top end of the handle, whereby the push button can be connected with the control mechanism by means of a flexible control bar through the handle .

In this embodiment the device with the drinking cup can be easily held with one hand on the handle and at the same time the user can then push the push button alternatingly with the thumb of the same hand .

The drinking cup can also be fixedly attached to the base or be detachably mounted, such that the device together with the attached drinking cup can be used as a drinking cup.

With the intention of better showing the characteristics of the invention, a few preferred embodiments of a device according to the invention for stirring a drink in a drinking cup or the like are described hereinafter by way of an example, without any limiting nature, with reference to the accompanying figures, wherein: figure 1 schematically shows a perspective view of a device according to the invention;

figure 2 shows a lateral view of the device of figure

1;

figure 3 shows an exploded view of the device of figure 1; figure 4 shows a vertical cross-section of the device of figure 1 during operation;

figure 5 shows a top view according to the arrow F5 in figure 4;

figure 6 on a larger scale shows a horizontal cross- section according to line VI-VI in figure 4;

figures 7 and 8 show the part indicated in figure 6 with F7 and this in two different positions;

figure 9 shows a top view of the part indicated in figure 4 with F9;

figure 10 shows an alternative embodiment of a device according to the invention;

figure 11 shows a similar cross-section as in figure 6 but for the device of figure 10;

figure .12 shows another embodiment of a device according to the invention;

figures 13 and 14 show another alternative embodiment of a device according to the invention and this in two different positions;

figure 15 shows the device of figure 14 in disassembled condition;

figure 16 shows the part indicated in figure 15 with F15 on a larger scale and from a slightly different angle;

figure 17 shows the bottom of the part indicated in figure 16 by F17;

figure 18 shows the part indicated in figure 16 by arrow FI8 on a larger scale;

figure 19 shows a cross-section according to the line IXX-iXX in figure 1.5; figure 20 shows a cross-section according to the line XX-XX in figure 13;

figure 21 shows half in lateral view and half in cross-section the stirring element indicated in figure 20 by F21 on a larger scale;

figure 22 shows a perspective view of the part indicated in figure 21 by F22;

figure 23 shows a view according to arrow F23 in figure 22.

The device 1 shown in figure 1 contains a drinking cup 2 and a base 3 with a bottom 4 with which the device 1 can be placed on a table or the like, and a horizontal top wall 5 on which the drinking cup 2 can be placed or attached.

Top and bottom, horizontal and vertical are defined here for the device in use as shown in figure 1.

In the example shown, the device 1 is further equipped with an upward facing handle 6 which is attached to a sidewall 7 of the base 3 and which at the top end is provided with a control button 8 for the operation of the device 1.

The control button 8 is in this case a push button, whereby, when the device 1 is held with a hand on the handle 6, the control button 8 can be pushed in with the thumb of that same hand.

In this specific example the drinking cup 2 is detachably attached to the base, to which end the drinking cup 2 is provided with coupling means 9a which can co-operate with complementary coupling means 9b on the base. These coupling means 9 are for example executed in the form of a bayonet catch as shown in figure 3. As such, the device 1 and the drinking cup 2 attached thereto can be lifted as one whole to be able to drink from the drinking cup 2.

The device 1 is further provided with a stirring element 10 as shown in the figures 3 and 4, for example in the form of a screw as shown in figure 5, said stirring element 10 being mounted for use of the device on the bottom 11 of the drinking cup 2 and which in this condition can rotate freely around a vertical axis X-X' .

The stirring element 10 is designed in such a way that it can sink to the bottom of a drinking cup 2 with a drink in it and is pulled to the bottom by the magnetic attraction. Preferably, the stirring element 10 has a diameter which is slightly smaller than the diameter of the bottom of the drinking cup 2, such that it lies flat on the bottom 4 of the drinking cup.

A shaft 12 is provided in the base 3 with a geometric axis X-X' which extends vertically through the centre of the bottom 11 of the drinking cup 2 and which with its ends is rotatably mounted with bearings in the bottom 4 and in the top wall 5.

A rotor 13 is rotatably mounted around the shaft 12 and is provided to magnetically co-operate with said stirring element in such a way that when the rotor 13 is driven around its shaft 12, the stirring element 10 is magnetically driven to rotate by the rotor 13. In the example this magnetic co-operation is realised because the rotor 13 is provided with at least one magnet 14 or a magnetisable element 14 at a radial distance A from said shaft 12 and the stirring element 11 for example also contains a magnet 14' or is made from a material which is magnetically attracted or repelled by the magnet 14. It is clear for the person skilled in the art that other magnetic solutions are also possible.

The rotor 13 can be further provided with extra weights 15 to increase the inertia of the rotor 13 such that the rotor 13 can also act as flywheel.

A sprocket 16 is mounted on the rotor 13 with internal saw toothing 17 which is part of a freewheel 18 which is further executed with a carriage 19 that rotates with the shaft 12 and which is provided with at .least one pawl 20 which is rotatably mounted on the carriage 19 and which under the influence of a spring 21 engages with the toothing 17 of the sprocket 16.

In the case of the figures, two pawls 20 are provided which are mounted diametrically opposite each other on the carriage. A small driving gear 22 is attached to the shaft 12 with an external toothing to drive the rotor 13 via the freewheel

18. Due to the freewheel 18 this drive is only possible in one direction of rotation as illustrated based on the figures 7 and 8.

Figure 7 shows the situation in which the driving gear 22 is driven clockwise (B) . However, the pawls 20, which are pushed outward by the centrifugal forces, slide over the long side of the teeth of the saw toothing 17 without the pawls 20 being able to get a grip on the rotor 13. In this direction of rotation B the rotor 13 is therefore not driven by the gear 22.

If_# by contrast, the driving gear 22 is driven in anticlockwise direction C as shown in figure 8, under the influence of the centrifugal forces, the pawls 20 click tight behind the short side of the saw toothing 17, such that the rotor 13 is gripped in this rotational movement of the driving gear 22.

It is not excluded that the pawls 20 are pushed outward by means of a spring in the direction of the slewing ring 16.

A control mechanism 23 is provided between the control button 8 and the rotor, which in addition to the freewheel 18 and the driving gear 22 also contains a larger gear 24 with external toothing that engages with the smaller driving gear 22, and which is mounted on a vertical shaft 25 which is rotatably mounted with bearings in the base 3 at a radial distance from the shaft 12.

A second gear 26 with a smaller diameter is attached to this shaft 25 which also rotates with the larger gear 24.

The control mechanism 23 also contains a toothed rack 27 which by means of a flexible control bar 28 is connected with a control button 8 and which with its toothing engages with the toothing of the smaller gear 26 on .the shaft 25.

In its longitudinal direction, the flexible control bar is slideably mounted in a guide 29 of the handle 6 and is such that it is able to transmit the forces exercised on the control button to the toothed rack 27 and further via the control mechanism 23 to the driving gear 22 on the shaft 12 of the rotor 13.

Moreover, the control mechanism 23 contains a return spring 30 which forces the control button and/or the control mechanism to a resting position when the control button is released as shown in figure 4.

The use of the device 1 is very simple and as follows. The stirring element 10 is put in the drinking cup 2 together with the drink to be stirred 31.

Subsequently, the control button 8 is alternatingly pressed against the force of the return spring 30 as indicated with arrow D in figure 4 and released again, such that the control button is pushed back to its resting position under the influence of the return spring 30.

With each back and forth impulse operation of the control button 8, the toothed rack 27 is moved back and forth, such that the driving gear 22 and thus also the carriage 19 of the freewheel 18 are rotated back and forth, such that each time the control button 8 is moved in one direction, the rotor 13 is carried along, but can continue to rotate freely without being stopped by the control mechanism 23 if the control button is moved in the opposite direction.

In this way, the rotor 13 and thus also the stirring element 10 and the drink 31 are powerfully rotated in one direction by means of the pulsating manual operation of the control button 8, so powerful even that a vortex is generated in the drink and the drink is powerfully stirred.

In the example shown in the figures, the rotor 13 is driven every time the control button 8 is released and under the influence of the return spring 30 is returned to its resting position. Conversely, it is also possible that this happens every time the control button 8 is pressed. This requires a freewheel 18 that works in reverse.

It is clear that the freewheel 18 is a power transmission coupling which is active when the control button 8 is moved in one direction, but which is inactive when the control button 8 is moved in the opposite direction . The freewheel 18 can also be provided in the double gear 24-26 instead of in the rotor or in every other additional intermediate gear.

Furthermore, it is not excluded that the mechanical control mechanism is made with other gear transmissions.

²After the stirring the stirred drink can be drunk, either by detaching the drinking cup 2 from its base 3 or by using the device 1 with the drinking cup 2 mounted on it as a drinking cup, using the handle 6 to hold the entire device and to drink.

After use the drinking cup 2 can be easily detached and the stirring element 10 can be removed to clean it.

Figure 10 shows a variant of a device 1 according to the invention whereby the device 1 is much lower because the handle 6 has been left out and the base is made with a flat top wall 5 on which a loose drinking cup 2 can be put with a drink 31 and a stirring element 10 in it.

In this case the control button 8 is rotatably mounted around a vertical shaft 32 in the base 3 and is provided with a return spring 30 in the form of a torsion spring which pushes the control button 8 outward into a resting position, whereby the control button 8 partially protrudes laterally from the base .

In this case the toothed rack 27 is directly connected with the control button 8 and has a curved form with a curvature centre that coincides with said shaft 32 of the control button 8.

The use of this device 1 is analogue to what was described above in connection with the embodiment of the figures 1 to 4, with this difference that this time the control button 8 has to be pushed in laterally as shown in figure 10 instead of vertically.

Figure 12 shows a device as that of figure 10 but with a drinking cup 2 which is fixedly or detachably attached to the device, for example by means of a bayonet catch 9a-9b as that of figure 3.

Figures 13 to 24 show a preferential embodiment of a device 1 according to the invention for stirring or mixing a drink in a drinking cup 2 which is detachably attached to the base 3 by means of coupling means 9 in the form of a bayonet catch 9a-9b and which in this case is provided with a removable lid 33 with a collapsible handle 34 fitted with a clip closure 35.

In this case the .lid 33 is detachably executed by a screw coupling with an exterior screw thread 36 along the top edge of the drinking cup 2 and an internal thread (not shown) in the lid 33.

The drinking cup 2 is further provided with a sleeve 37 made of silicones or the like which is slid over the top part of the drinking cup 2. For the rest the base 3 with its control mechanism 23 is analogue to that of figure 3, with the following differences :

- the height of the base 3 is split into two parts which in a vertical direction are attached to each other with enclosure of the control mechanism 23;

- in this case the toothed rack 27 is made as a rectangular frame with the toothing of the toothed rack 27 on the inside of the frame, whereby this rectangular frame is mounted .linearly slideable in the bottom 4 of the base 3 in guides 38, in this case more specifically slideable in the radial direction of the axis X-X' ;

- the control button 8 is clipped to an end of the toothed rack 27 and slideable in a guide 38a which laterally protrudes from the base 3, although it is not excluded that the toothed rack 27 and the control button 8 are manufactured as one unit;

- the toothed rack 27 and base 3 are provided with conical pens 39 facing each other to hold the return spring 30 in line with the radial sliding direction of the toothed rack 27;

- in this case, the saw toothing 17 of the freewheel 18 is mounted against the bottom side of the rotor 13 with teeth with straight flanks which extend perpendicularly to this bottom side and which co-operate with the straight flanks 20a of the pawls 20,

- no lateral handle is provided on the side of the base 3 or of the drinking cup 2.

A preferred form of the stirring element 10 is shown in the figures 21 to 23, whereby this stirring element 10 is composed of two identical halves, respectively 1.0a and 10b, which are attached back to back with enclosure of the magnets 14' . The stirring element 10 contains a core 40 with four radially oriented lobes 41 attached to it which are arranged in a cross relative to each other.

The lobes 41 have a contour in the form of a circular segment 42 with an opening angle E facing the core which extends symmetrically around four spouts perpendicular to each other, said circular segments 42 being connected with each other by tangentially connecting circular hollows 43 of the core 40.

Both at the top and the bottom of the stirring element 10, the core 40 is provided with a spherical saucer-shaped abutment 44 which is centred around the axis X-X' of the stirring element 10 and which is surrounded by a protruding ring-shaped edge 45, whereby this saucer-shaped abutment 44 fits in a hollow saucer-shaped recess 46 on the bottom 11 of the drinking cup 2 with a complementary form in relation to said saucer-shaped abutments 44 on either sides of the stirring element 1.0, all this such that the stirring element 10 with its downward facing saucer-shaped abutment 44 can rest in the recess 46 in the bottom 11 of the drinking cup 2, whereby the stirring element 10 in this way is mounted with bearings as it were on the bottom 11 for a rotation around the axis X-X⁷. The edge 47 of the recess 46 in the bottom 11 of the drinking cup 2 slightly protrudes upwards, such that the ring-shaped edge 45 around the downward facing saucershaped abutment 44 of the stirring element 10 fits around the raised edge 47 around the recess 46 in the bottom 11 of the drinking cup 2. Consequently, when rotating, the stirring element 10 always remains well centred around the axis X-X' . The thickness of the stirring element 10 gradually decreases from the middle to the outside, whereby the edge 48 of the stirring element 10 seen in radial cross-section has a rounded form.

In practice this form of stirring element 10 causes a powerful vortex with a favourable effect on the mixing results of the liquid in the drinking cup 2.

A dimensioning example of the stirring element 10 which in tests yielded good mixing results with a minimum resistance is the following:

- diameter F of the circumscribed circle: approximately 45 mm for a diameter G of approximately 60 mm for the bottom 11 of the drinking cup 2;

- external diameter H of the lobes 41 approximately 16 mm;

opening angle E of the lobes 41: approximately 54°; distance from the centre of the lobes 41 to the axis X-X' : ????

saucer-shaped abutment 44 with a Convexity curvature with a curvature radius of approximately 21mm; rounding of the edges with a curvature radius of the order of magnitude of 2.4mm.

With regard to the control mechanism 23 the following number of teeth were provided:

- gear 22: 11;

- gear 24: 33;

- gear 26: 11;

- toothing 17: 12.

The present invention is by no means limited to the embodiments described as an example and shown in the drawings, but a device according to the invention to stir a drink in a drinking cup or the like can be realised in all kinds of forms and dimensions, without departing from the scope of the invention.

Claims

Claims .

1.- Device for stirring or mixing a drink in a drinking cup, characterised in that the device contains:

- a base (3) on which a drinking cup (2) is or can be detachably mounted;

- a stirring element (10) which before use of the device (I) can be mounted on the bottom (11) of the drinking cup (2) with a drink (31) and which in this condition can rotate freely around a vertical axis (C-C' ) and is provided with one or more magnets; whereby the base (3) is provided with :

a rotor (13) which is rotatable around a vertical axis (X-X' ) ;

- a magnetic coupling between the rotor (13) and the stirring element (10) which is such that the stirring element (10) is synchronously magnetically driven to rotate by a rotation of the rotor (13) ;

- a mechanical control button (8) which under the influence of a return spring (30) is pushed in a resting position whereby the control button at least partially protrudes from the base; and,

- a mechanical control mechanism (23) between the control button (8) and the rotor (13) to make the rotor (13) rotate by alternatingly pushing the control button (23) against the force of the return spring (30) and releasing again to have the pushed-in control button (23) return to its resting position under the influence of the return spring, whereby the control mechanism (23) contains a power- transmission coupling (18) which is active when the control button (8) is moved in one direction, but which is inactive when the control button (8) is moved in the opposite direction such that by consecutively pushing and releasing the control button (8) a continuous rotational movement in one direction is caused.

2.- Device according to claim 1, characterised in that the coupling (18) is active when the control button (8) is operated from its resting position and inactive when the control button (8) returns to this resting position under the influence of the return spring (30) .

3.- Device according to claim 1 or 2, characterised in that the coupling (18) is made as a freewheel (18) .

4.- Device according to claim 3, characterised in that the freewheel (18) is .integrated in the rotor (13), whereby the rotor (13) is provided with a sprocket (16) with an internal saw toothing (17) whereby the rotor (13) is mounted freely rotatable around its shaft (12) and whereby this shaft (1.2) is provided with a driving gear (22) and a carriage 19 and at least one pawl (20) which is hingeably mounted on said carriage (19) around a vertical shaft (21) which is located at a radial distance from the shaft (12) of the rotor (13), said pawl (20) engaging with the toothing (17) of the sprocket (16) under the influence of the centrifugal force of a spring (21) .

5. - Device according to any one of the previous claims, characterised in that the control mechanism (23) contains a toothed rack (27) which is connected to the control button (8) and which engages with a gear (26) which together with a larger gear (24) is attached to a vertical shaft (25) which is rotatably mounted in the base (3 I t whereby the larger gear (24) engages with said driving gear (22) on the shaft (12) of the rotor (13) .

6. - Device according to any one of the previous claims, characterised in that the rotor (13) is made as a flywheel.

7. - Device according to any one of the previous claims, characterised in that the stirring element (10) is a screw that cannot float in the drink to be stirred or mixed.

8.- Device according to any one of the previous claims, characterised in that the screw has a diameter which is slightly smaller than the diameter of the bottom (11) of the drinking cup (2) .

9. - Device according to any one of the previous claims, characterised in that the stirring element (10) contains a core (40) with four radially oriented lobes (41) attached to it which are arranged in a cross relative to each other around the core (40) .

10.- Device according to claim 9, characterised in that the lobes (41) have a contour in the form of a circular segment

(42) with an opening angle € facing the core (40) which symmetrically extends around four spouts perpendicular to each other, said circular segments (42) being connected with each other by tangentially connecting circular hollows

(43) of the core (40) .

11.- Device according to claim 9 or 10, characterised in that the core (40) on either side is provided with a spherical saucer-shaped abutment (44) which is centred around the axis (X-X' ) of the stirring element (10) and which is surrounded by a protruding ring-shaped edge (45), whereby this saucer-shaped abutment (44) fits in a hollow saucer-shaped recess (46) on the bottom (11) of the drinking cup (2) with a complementary form in relation to said saucer-shaped abutments (44) on either side of the stirring element (10) .

12.- Device according to claim 11, characterised in that the edge (47) of the recess (46) in the bottom (11) of the drinking cup (2) slightly protrudes upwards, such that the ring-shaped edge (45) around the downward facing saucershaped abutment (44) of the stirring element (10) fits around the raised edge (47) around the recess (46) in the bottom (11) of the drinking cup (2) .

13.- Device according to any one of the previous claims, characterised in that the device does not contain a handle on the side of the base (3) or of the drinking cup (2) .

14.- Device according to any one of the previous claims, characterised in that the drinking cup (2) is provided with a lid (33) that is attached detachably on the drinking cup (2) and that is provided with a collapsible handle (34) .

15.- Device according to any one of the claims 5 to 8, characterised in that the control button (8) is rotatably mounted around a vertical shaft (32) in the base (3) and that the toothed rack (27) is a curved toothed rack with a curvature centre that coincides with said shaft (32) of the control button (8) .

16. - Device according to claim 15, characterised in that the base (3) is formed by two half shells which are attached to each other in vertical direction with enclosure of the rotor (13) and of the control mechanism (23) and partially the control button (8) which in its resting position partially protrudes laterally.

17.- Device according to any one of the claims 5 to 8, characterised in that the base (3) is provided with a handle (6) with an upward facing section and that the control button (8) is mounted axially slideably in the top end of the upward facing part, whereby the control button (8) is connected with the toothed rack (27) by means of a flexible control bar (28) which is slideably mounted in its longitudinal direction in a guide (29) of the handle (6) .

18.- Device according to any one of the previous claims, characterised in that the drinking cup (2) is fixedly attached to the base (3) or can be mounted detachably thereon.

19. - Device according to claim 18, characterised in that the drinking cup (2) is detachably attached to the base (3) and to this end is provided with coupling means (9a) which can co-operate with complementary coupling means ( 9b) on the base (3) .