Field of the Invention
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The invention relates to an attachment for a drinking device and a related drinking device for the retronasal perception of an aroma substance.
Prior Art
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There is an increasing need to ingest drinking liquids which on the one hand have a pleasant taste profile but on the other hand prevent health risks which could be brought about by the ingestion of aroma substances or stabilizing agents dissolved in the drinking liquid. The intake of an increased quantity of calories is also to be avoided.
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Water which has been given a slightly fruity aroma has therefore become popular. However, even in this aromatized water there are undesired additives such as stabilisation agents and a certain proportion of sugar, which is why these aromatized beverages likewise have a quantity of calories which is rejected by many users. A first step towards solving this problem consists in only adding the flavouring aroma to the beverage just before it is consumed. An aroma substance originally provided separately is delivered to the drinking liquid and dissolved in it immediately before or during the consumption of the beverage. Although this measure allows problems such as the stabilisation of the drinking liquid to be avoided over a prolonged period of time, the problem of the undesired ingestion of additives remains.
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Since the olfactory sensation plays a significant part in gustatory perception in the consumption of food and beverages, systems to date have attempted to influence the odour perceived while drinking. To that end
US 5,635,229 proposes an aroma element which can be attached close to the drinking opening on a drinking container so that the aroma element is situated in the immediate proximity of the nose of the user who breathes through the nose while drinking and thereby takes in the aroma orthonasally.
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Drinking devices have been suggested for the retronasal perception of an aroma substance comprising a storage container for drinking liquid, at least one aroma container through which air can flow, and a transporting channel for drinking liquid running from the storage container to a mouth end of the drinking device. Further, an air channel is provided for transporting aromatized air, wherein the air channel runs from an aroma container to the transporting channel for drinking liquid or to the mouth end. Such drinking device is known from
WO 2019/016096 A1 .
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WO 2021/233516 A1 describes an aroma container and drinking device which also serves for the retronasal perception of an aroma.
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The substantial aspect of such drinking systems consists in that the aroma substance is perceived retronasally. During drinking the aroma substance reaches the mouth of the user together with the drinking liquid and subsequently rises retronasally via the pharynx to the olfactory mucosa (regio olfactoria), where it is captured by the receptors situated there and is perceived by the user. Advantage is taken of the fact that there is a close correlation between the sense of smell and the sense of taste. The user therefore gains the impression that he/she is tasting the aroma, even though it is in fact only smelled retronasally.
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A person's sense of taste is substantially determined by the retronasal sense of smell. The receptors of the tongue can only distinguish between sweet, sour, bitter, salty and umami, whereas the differentiated sense of taste arises in that the gaseous phase of food stuffs and liquids in the pharynx ascends via the retronasal route and reaches the olfactory mucosa. The sensors located there trigger neurological processes which cause the taste impression to arise in the brain. Thus, a person to whose pharynx an aroma is delivered during drinking gains the impression that the beverage is aromatized, since the retronasal smelling process creates in the brain a sensation that the beverage is the source of the aroma, even though the user is ingesting a pure and unadulterated, i.e., non-aromatized, liquid such as water.
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If the odour is perceived by breathing in through the nose, known as the orthonasal perception of an aroma substance, this impression does not arrive to the same extent since the sensation is linked to the rate of breathing and thus the user gains the correct impression that he/she is only smelling the aroma substance, but not tasting it as is the case with retronasal perception.
Summary of the Invention
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It is the object of the invention to suggest an attachment structure for a drinking device which is more convenient to use.
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This object is solved by an attachment for a drinking device with the features of claim 1 and a drinking device for the retronasal perception of an aroma substance with the features of claim 16. Preferred embodiments follow from the other claims.
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An attachment for a drinking device according to the invention comprises an attachment element attachable to a drinking vessel, the attachment element being provided with a spout element with an outer wall and an inner wall surrounding a transport channel for drinking liquid. The attachment further comprises a mouthpiece attachable to the spout element, wherein the mouthpiece comprises a wall structure surrounding an elongate interior volume between a first end and a second end at which the interior volume forms at least partially a drinking opening, the mouthpiece being provided with an air ingress opening formed in the wall structure, and wherein the air ingress opening is in fluid communication with an air channel having a first section in which the air channel runs along the transporting channel for drinking liquid and separate from the transporting channel for drinking liquid, and a second section in which the air channel runs to a joining position at which the air channel leads into the transporting channel for drinking liquid.
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By providing an air channel having a first section in which it runs along and separate from the transporting channel for drinking liquid, such first section which, preferably, can be provided with intermediate pressure equalization and homogenization chambers, serves to provide a more constant supply of aromatized air both in terms of the air pressure and the amount of aroma substance content in the aromatized air. In other words, the first section of the air ingress opening acts as a buffering section reducing the pressure peaks generated when a user sucks in liquid through the mouthpiece. Further, a better mixing of the aromatized air within the first section of the air channel results in a more constant degree of flavouring of the aromatized air which further contributes to a convenient use of a drinking device with such attachment.
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The first section of the air channel can run essentially parallel to the transporting channel for drinking liquid. It is, however, also possible that the first section of the air channel has a zig-zag shape. In such a case, the length of the first section can be increased as compared to a straight course. Another alternative is a helically shaped first section of the air channel running around the transporting channel for drinking liquid. Such geometry also increases the overall length of the first section.
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The second section of the air channel servers to convey aromatized air to the joining position at which the air channel opens into the transporting channel for drinking liquid. At this joining position, the aromatized air enters the drinking liquid flowing through the transporting channel and becomes finely dispersed therein.
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The second section can run essentially perpendicular to the longitudinal axis of the transporting channel for drinking liquid but can also have a complex geometry. In the second section, the air channel approaches the transporting channel for drinking liquid and leads into the transporting channel for drinking liquid.
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A further advantage of an air channel with a section running separate from the transporting channel for drinking liquid lies in the fact that drinking liquid entering the air channel at the joining position is less likely to enter the replaceable aroma container than in case of a short air channel between an air outlet opening of the replaceable aroma container and the transporting channel for drinking liquid.
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Preferably, the first section has a higher length as the second section. In such a way, an air channel is provided with a sufficient length to reduce the risk that drinking liquid might enter the replaceable aroma container.
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Preferably the air ingress opening is formed close to the first end of the wall structure, and preferably runs in a substantially radial direction.
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Such extension of the air ingress opening further contributes to avoid an undesired ingress of water into the replaceable aroma container. Since the first section runs substantially parallel to the transporting channel for drinking liquid, an orientation of the air ingress opening in a substantially radial direction leads to a change in direction between the air ingress opening and the first section of the air channel. Any change in direction reduces the risk that water might enter the air outlet opening of the replaceable aroma container.
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According to a preferred embodiment of the invention, the first section is provided with at least one pressure equalization chamber. Such pressure equalization chamber can be arranged either at one longitudinal end of the first section of the air channel or between two portions of the first section of the air channel. In a pressure equalization chamber, the cross-section available for the flow of aromatized air widens so that the air velocity drops. Further, the shape of the pressure equalization chambers can be such that a mixing of the aromatized air occurs, e.g., by providing a geometry which promotes the forming of a vortex of the aromatized air flowing within the pressure equalization chamber.
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In case that a pressure equalization chamber is formed in the first section of the air channel at a position, where the air ingress opening is arranged, the pressure equalization chamber might extend towards the first end of the mouthpiece beyond the position at which the air ingress opening is formed. Such geometry might further contribute to the trapping of liquid entering the air channel at the joining position. If the attachment is attached to a drinking device standing in an upright position such that the second end of the mouthpiece is at a vertically higher position than the first end of the mouthpiece, water entering the air channel and eventually entering the pressure equalization chamber arranged around the air ingress opening might become trapped at the lowest position of the pressure equalization chamber which is lower than the position of the air ingress opening. In such a way, the undesirable entering of drinking liquid into the replaceable aroma container can be further reduced.
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According to a preferred embodiment, the air channel is provided with means for directing water away from the air ingress opening, the means for directing water away from the air ingress opening preferably being a protrusion in the wall surrounding the air channel positioned close to the air ingress opening.
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Such protrusion can surround the air ingress opening so that water creeping along the wall surrounding the air ingress opening will be directed around the air ingress opening and away from it. As an alternative, a protrusion can be provided which is positioned adjacent to the air ingress opening at a position between the air ingress opening and the joining position which, with the attachment attached to a drinking device and the drinking device standing on a horizontal surface, is in a position vertically above the air ingress opening.
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According to a preferred embodiment, the air ingress opening extends between an outer wall surface and an inner wall surface of the mouthpiece. Further, the air ingress opening is in communication with a depression formed in the inner wall surface of the mouthpiece, wherein the depression in the inner wall surface forms the air channel between the inner wall surface of the mouthpiece and the outer wall of the spout element.
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Such embodiment simplifies the production of the attachment because the air channel is formed by a depression formed in the inner circumferential surface of the mouthpiece. Such geometry can be formed using a simple tool. Once the mouthpiece is attached to the spout element and surrounding the spout element, an air channel is formed at the interface between the spout element and the mouthpiece.
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According to an alternative preferred embodiment, the air ingress opening is in communication with a depression formed in the outer wall of the spout element, wherein the depression in the outer wall of the spout element forms the air channel between the inner wall surface of the mouthpiece and the outer wall of the spout element.
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Such embodiment also simplifies the production of the attachment because the air channel is formed by a depression formed in the outer circumferential surface of the spout element. Such geometry can be formed using a simple tool. Once the mouthpiece is attached to the spout element and surrounding the spout element, an air channel is formed at the interface between the spout element and the mouthpiece.
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Preferably, the joining position of the second section of the air channel is close to the second end of the mouthpiece.
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Such arrangement has the advantage that, if the air ingress opening is positioned close to the first end, the aromatized air has to travel a relative long way along the first section of the air channel which supports the desired pressure equalization and homogeneous flavouring of aromatized air.
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Preferably, at the second end, the mouthpiece extends a predetermined extension length beyond the spout element, and the joining position is arranged along the extension length.
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Such geometry has two advantages. The first advantage is that a long first section of the air channel can be provided. The second advantage is that, at the joining position, no opening has to be provided in the spout element because the joining position is arranged where the mouthpiece beyond the extension of the spout element.
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According to a preferred embodiment of the invention, the attachment further comprises a seating structure for a replaceable aroma container.
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Such seating structure leads to an exact positioning of the replaceable aroma container and supports a user to attach the replaceable aroma container in a correct position in which the air outlet opening of the replaceable aroma container is in fluid communication with the air ingress opening of the mouthpiece.
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According to a preferred embodiment, the attachment further comprises an air control element attachable to the attachment element and being displaceable between a first operating position at least partially closing an air inlet opening into an interior volume of the replaceable aroma container, and a second operating position opening the air inlet opening.
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Such air control element can be used to bring a replaceable aroma container from the first operating position into the second operating position and vice versa. Moreover, it is possible to design the air control element such that intermediate positions between the first operating position and the second operating position can also be provided. In the first operating position, the air inlet opening into the interior volume of the replaceable aroma container is either fully closed or at least partially closed. If it is fully closed, the replaceable aroma container is put into a storing condition in which no air flows through the replaceable aroma container. If the air inlet opening is at least partially closed, the air control element acts like a throttle valve reducing the amount of aromatized air a user sucks in when drinking through the mouthpiece. If the air control element is in the second operating position, the air inlet opening is fully opened or at least substantially opened and a high flow of air flows through the replaceable aroma container, leaves the replaceable aroma container as aromatized air and is sucked in by a user when drinking through the mouthpiece. In such a way the degree of flavouring can be controlled.
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Preferably, an actuating means for displacement of the air control element between the first operating position and the second operating position is provided, wherein the actuating element preferably is an actuating element positioned and adapted for manual operation.
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When manually operating such an actuating element, a user can switch between the first operating position and the second operating position, or even arbitrarily selected intermediate positions. In such a way, a user can freely select whether he/she wants to drink pure drinking liquid or drinking liquid provided with aromatized air. Further, a user can further select the degree of flavouring provided by the amount of aromatized air.
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Preferably, the control element is arranged at a seating structure for a replaceable aroma container of the attachment element and positioned between the seating structure and a replaceable aroma container.
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Such geometrical arrangement is beneficial because, when replacing the aroma container, the air control element does not need to be removed. The air control element can remain at its position arranged at the seating structure of the attachment element and only the replaceable aroma container needs to be removed and replaced by a new one.
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Preferably, the air control element comprises an air duct groove in an aroma container facing surface which is in fluid communication with the ambient atmosphere, wherein the aroma container facing surface is in contact with a bottom surface of a replaceable aroma container attached to the attachment structure.
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Such air duct is easy to manufacture because only a groove needs to be formed in the air control element. Further, the air control element can be used with a replaceable aroma container with an air inlet opening arranged in the bottom surface of the replaceable aroma container. An arrangement of the air inlet opening in the bottom surface of a replaceable aroma container is beneficial because air entering the replaceable aroma container first has to pass an interior structure of the replaceable aroma container comprising aroma substance before it can enter a gas space within the replaceable aroma container. The bottom surface of a replaceable aroma container is a wall section which, in an orientation of the attachment fixed to a drinking vessel and the drinking vessel standing on a horizontal surface, is at the lowest position of the replaceable aroma container at which liquid aroma substance tends to collect. Therefore, the use of an air inlet opening in the bottom surface of a replaceable aroma container leads to a high enrichment of the air aroma substance.
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According to a preferred embodiment, the air control element is rotationally displaceable around a rotational axis defined by the longitudinal extension of the spout element, the air duct groove extending up to a defined radial position.
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If the air duct groove extends to a defined radial position at which an air inlet opening of a replaceable aroma container is positioned, a rotational displacement of the air control element can either bring the air duct groove in fluid communication with the air inlet opening or block such air communication.
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According to a preferred embodiment, the attachment further comprises a fixing structure for attaching a drinking straw, wherein, once attached, an interior hollow volume of the drinking straw is in fluid communication with the transporting channel for drinking liquid.
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In such a way, an attachment structure for drinking straw is integrally formed with the attachment and preferably with the attachment element thereof.
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The inventive drinking device comprises a drinking vessel for drinking liquid with a filling opening, an air-permeable replaceable aroma container comprising an air inlet opening and an air outlet opening, and an attachment according to any of the preceding claims, wherein the attachment is attached to the filling opening of the drinking vessel.
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Preferably, the air ingress opening of the mouthpiece is in fluid communication with the air outlet opening of the replaceable aroma container.
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In such a way, it is no longer required to move the replaceable aroma container between an operating position and a storing position.
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Preferably, an attachment structure with an air control element as described above is used, wherein the air control element in the second operating position provides a fluid communication between the air inlet opening of the replaceable aroma container and ambient atmosphere.
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Thus, the air control element of the drinking device can be used to shift the replaceable aroma container between different operating conditions, e.g., a first operating position closing the air inlet opening into the replaceable aroma container, and a second operating position providing a fluid communication between the air inlet opening of the replaceable aroma container and ambient atmosphere so that, when sucking pressure is applied to the mouthpiece, aromatized air leaves the replaceable aroma container and travels through the air channel.
Brief Description of the Drawings
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In the following drawings, the invention will be described, purely by way of example, by means of a specific embodiment. The figures show the following:
- Fig. 1
- a drinking device according to the invention;
- Fig. 2
- a cross-sectional view of the attachment attached to a drinking vessel;
- Fig. 3
- a cross-sectional view in a plane perpendicular to that as shown in Fig. 2 of a part of the attachment according to the invention;
- Fig. 4
- a three-dimensional view onto the attachment attached to a drinking vessel and with no aroma container attached; and
- Fig. 5
- a top view onto the attachment attached to a drinking vessel and with no aroma container attached.
Description of Preferred Embodiments
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In the following exemplary embodiment, the same elements will be designated with the same reference numbers.
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In the Fig. 1, a drinking device 10 with an attachment 12 according to the invention is shown with a replaceable aroma container 14 mounted to the attachment 12.
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A drinking device 10 comprises a drinking vessel 16 for holding a drinking liquid. The drinking vessel has a filling opening 18 at which the attachment 12 can be attached in any suitable way, e.g., by means of a thread coupling 20. Any coupling between the vessel 16 and the attachment 12 is suitable as long as the attachment can be easily detached and attached again by a user refilling the vessel 16 with drinking liquid.
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A carrying strap 22 as shown in the drawings further contributes to a convenient handling of the drinking device.
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The attachment 12 of the drinking device comprises a mouthpiece 24 with a wall structure 26 surrounding an elongate interior volume between a first end 28 and a second end 30. At the second end a drinking opening 32 is formed. The mouthpiece is preferably made of a soft material like silicone and shaped such that a user can conveniently enclose the mouthpiece with his/her lips when drinking.
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The attachment 12 further comprises a spout element 34 as shown in the cross-sectional view of Fig. 2. The spout element 34 is preferably integrally formed with an attachment element 36 forming the basic part of the attachment 12.
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The attachment element 36 further comprises a fixing structure for a drinking straw 38 which drinking straw 38, when the attachment 12 is attached to the vessel 16, extends into the vessel 16 up to close to a bottom wall of the vessel. The drinking straw 38 can be formed as a conventional drinking straw with an interior volume 40 surrounded by a wall 42. The interior volume of the drinking straw 40 is in fluid communication with a transporting channel 44 for drinking liquid formed by the surrounding wall of the spout element 34. Therefore, a user can suck in drinking liquid through the drinking opening, which drinking liquid flows through the interior volume 40 of the drinking straw 38 and the transporting channel 44 for drinking liquid.
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The attachment 12 is for a drinking device for the retronasal perception of an aroma substance. Accordingly, a seating structure 46 for a replaceable aroma container is provided. As can be best seen in Fig. 1, the replaceable aroma container 14 of this specific embodiment is shaped so as to surround the spout element 34 and mouthpiece 24. The replaceable aroma container is substantially annular, comprising a circular ring-shaped outer sidewall, and an inner sidewall which deviates from a circular shape. In other words, the space surrounded by the inner sidewall has a cross-sectional area which is not circular. This exemplary geometry as illustrated in Fig. 1 of the inner sidewall of the replaceable aroma container allows for a defined positioning of the replaceable aroma container on a correspondingly shaped seating structure 46 of the attachment 12. As a result of this, the replaceable aroma container 14 can only be placed in one single angular position with respect to rotation around the longitudinal axis of the transporting channel 44 for drinking liquid. An air outlet opening of the replaceable aroma container is located in the inner sidewall, and an air inlet opening is located in a bottom wall of the replaceable aroma container, preferably arranged diametrically opposed to the air outlet opening so that the air flow flowing through the replaceable aroma container has to travel as wide a travel distance as possible and can thus be enriched with aroma substance in a particularly effective manner.
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The shape of the replaceable aroma container in the embodiment as shown is only an example described in much detail in
WO 2021/233516 A1 incorporated by reference with respect to the outer shape of the replaceable aroma container. However, any suitable shape of the replaceable aroma container can be provided.
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The attachment 12 is provided with an external thread 48 for screwing on a cap (not shown) which, in periods of non-use, closes and protects the drinking opening 32 of the drinking device.
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Finally, in Fig. 1, an actuating element 50 is shown, the function of which will be detailed below.
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In the cross-sectional view of Fig. 2, without an aroma container attached, the path of aromatized air leaving an air outlet opening provided at the interior circumferential wall of the replaceable aroma container is indicated by arrow A. As shown in Fig. 2, the wall 26 of the mouthpiece 24 is provided with an air ingress opening 52 formed as a through hole extending in a radial direction with respect to the axis O defined by the longitudinal extension of the transporting channel 44 for drinking liquid.
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The air ingress opening through the wall 26 of the mouthpiece 24 leads into an air channel 54 connecting the air ingress opening 52 with a joining position 56 at which the air channel 54 opens into the transporting channel 44 for drinking liquid.
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In the example as shown in Fig. 2, the mouthpiece 24 extends beyond an end surface 58 of the spout element. The joining position 56 is arranged in that part of the mouthpiece 24 which extends beyond the end surface 58 of the spout element or, in other words, which extends between an end surface 58 of the spout element and the drinking opening 32. Because of this arrangement of the joining position 56, no suitable opening through the wall of the spout element needs to be provided.
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In the example as shown in Fig. 2 and Fig. 3, the air channel 54 is formed by a depression in an inner surface 60 of the wall 26 of the mouthpiece. This can be best seen in Fig. 3 which is a cross-sectional view of the mouthpiece 24 and an attached replaceable aroma container 14.
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In the example as shown in Fig. 3, the aromatized air leaving the air outlet opening of the replaceable aroma container 14 and flowing through the air ingress opening 52 is indicated. Adjacent to the air ingress opening 52 and above the air ingress opening 52, a protrusion 62 is arranged which acts as a means for directing water away from the ingress opening 52. Water droplets which might enter the air channel 54 through the opening at the joining position 56 and flowing in a downwards direction in the plane of Fig. 3 are directed away from the air ingress opening 52. Further, the air ingress opening 52 opens into a pressure equalization chamber 64 with an enlarged cross-sectional area. Aromatized air entering the air channel 54 will enter the pressure equalization chamber 64. When flowing upwards towards the joining position 56, the protrusion 62 will separate the aromatized air stream into two partial streams indicated in Fig. 3 flowing on both sides along the protrusion 62. Such separation of the aromatized air stream occurs because, as shown in cross-sectional view in Fig. 2, the protrusion 62 has a height such that it abuts against the wall of the spout element forcing the aromatized air to take a path along both sides of the protrusion 62. The aromatized air flowing through the air channel 54 passes two sections. A first section 54a in which the aromatized air flows essentially parallel to the axis O, and a second section 54b in which the aromatized air flows toward the joining position 56 where the aromatized air enters the drinking liquid. A separation of the aromatized air into partial streams and the joining of the partial streams promotes the mixing of the aromatized air leading to a further homogenization of the content of flavour of the aromatized air
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The shape of the pressure equalization chamber 54 as shown in Fig. 3 is only an example. Likewise, a plurality of pressure equalization chambers interconnected by sections of the air channel with a smaller cross-section can be provided. In the pressure equalization chamber, due to its volume which is considerably larger than that of the air ingress opening, pressure fluctuations occurring by the sucking in of the liquid are dampened. Further, a varying degree of flavouring of the aromatized air is homogenized in the pressure equalization chamber 64.
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According to a preferred embodiment as shown in Figs. 4 and 5, an air control element 66 can be provided which allows a user to control the amount of air flowing through a replaceable aroma container. The air control element 66 also shown in the cross-sectional view of Fig. 2 is placed on the seating structure 46 of the attachment 12. It is substantially C-shaped with a first end 68 and a second end 70 being spaced from each other by a small gap. Further, the air control element 66 is provided with a groove 72 formed in an upper surface 74 which serves as a seating surface for a replaceable aroma container. When a replaceable aroma container is attached to the attachment 12, its bottom surface rests on the upper surface 74 of the air control element 66.
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The air control element 66 is provided with an actuating element 50 which can be gripped by a user and shifted in the direction of arrow B within an elongate groove formed in the attachment 12.
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The groove 72 is shaped such that, when a replaceable aroma container is attached to the attachment 12, ambient air can enter the first end 72a of the groove 72. The air entering the groove at the first end 72a is in communication with a second end 72b of groove 72. The second end 72b is positioned such that air can enter an air inlet opening in the bottom wall of the replaceable aroma container if the air control element 66 is in appropriate rotational orientation relative to the attachment structure 12. If a user shifts in the direction of arrow B the actuating element 50, the air control element 66 can be moved between a first operating position in which the groove 72 is not in fluid communication with the air inlet opening of the replaceable aroma container, and a second operational position in which there is a fluid communication between the second end 72b of the groove 72 and the air inlet opening into the replaceable aroma container. Therefore, a user can activate and deactivate the replaceable aroma container simply by shifting the actuating element 50.
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An actuation of the actuating element 50 integrally formed with the body of the air control element 66 leads to a rotational movement of the air control element. When the actuation element 50 is in the position as shown in Fig. 4, the air control element 66 with its step portion 76 abuts against a fixed part 78 of the attachment 12 limiting a further movement of the air control element 66. Likewise, at the other end of the C-shaped air control element 66, a corresponding second abutting portion 80 is provided limiting the rotational movement of the air control element in the opposite rotational direction.
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Since all relevant functions are included in the attachment 12 of the drinking device 10, the attachment 12 can replace a corresponding head part of a conventional drinking device. The inventive attachment is more convenient to use because a more homogeneously flavoured and more constant flow of aromatized air is sucked in by a user. When providing the attachment with the air control element as described, a user can easily switch a replaceable aroma container from an operational position into a storing position without having to shift or turn the replaceable aroma container which, once attached, can rest in its attachment position.
Reference List
-
- 10
- drinking device
- 12
- attachment
- 14
- replaceable aroma container
- 16
- vessel
- 18
- filling opening
- 20
- thread coupling
- 22
- carrying strap
- 24
- mouthpiece
- 26
- wall of mouthpiece
- 28
- first end of mouthpiece
- 30
- second end of mouthpiece
- 32
- drinking opening
- 34
- spout element
- 36
- attachment element
- 38
- drinking straw
- 40
- interior volume of drinking straw
- 42
- wall of drinking straw
- 44
- transporting channel for drinking liquid
- 46
- seating structure
- 48
- external thread
- 50
- actuating element
- 52
- air ingress opening
- 54
- air channel
- 54a
- first section of air channel
- 54b
- second section of air channel
- 56
- joining position
- 58
- end surface of the spout element
- 60
- inner surface of wall 26
- 62
- protrusion
- 64
- pressure equalization chamber
- 66
- air control element
- 68
- first end of air control element
- 70
- second end of air control element
- 72
- groove
- 72a
- first end of groove
- 72b
- second end of groove
- 74
- upper surface
- 76
- abutting portion
- 78
- fixed part
- 80
- second abutting portion