Manual coffee press

Abstract

The present invention relates to a manual coffee press, comprising: (a) a pressing assembly including a column, a push rod, and an operating lever, wherein (i) the operating lever is rotatably coupled to an axial end of the column, and wherein the operating lever and the column are configured to rotate about an eccentric axis, and (ii) the operating lever is rotatably coupled to an axial end of the push rod, and wherein the operating lever and the push rod are configured to rotate about a central axis; and (b) a brewing assembly including a brewing head, a liquid container, and a piston, wherein the push rod includes a first pin and the piston includes a toothed comb, wherein the first pin and the toothed comb are releasably coupled to each other.

Description

Technical Field

[0001] This invention relates to a beverage press. Specifically, this invention relates to a manual coffee press. Background Technology

[0002] Coffee is one of the most widely consumed beverages in the world. It is typically made by extracting soluble components from so-called ground coffee using hot water. However, the taste of coffee varies greatly, even when using the same ground coffee as the starting material, depending on the precise conditions under which the extraction is performed.

[0003] A widely used method of making coffee involves passing a relatively small amount of hot water under relatively high pressure through a tamped block of coffee grounds, forcing the water through the block. This specific method of making coffee produces what is known as espresso. To produce espresso, a countertop-sized machine is typically used, which usually requires a complex assembly of power sources and components used to generate high-pressure hot water and discharge a certain amount of hot water through a tank containing the tamped block of coffee grounds. Unfortunately, such equipment is quite expensive to purchase and maintain.

[0004] Alternatively, manual devices are available, which require no power supply and the same level of maintenance as typical automatic equipment. However, the fact that these devices are not fully automated has the disadvantage of being less convenient and simple to operate. Such devices are known, for example, from EP1509112. Although the coffee machine according to EP'112 allows for the brewing of espresso, its operation is not as simple as one might expect. In fact, the movement of the lever in the device disclosed in EP'112 is under the control of the user and can be controlled accordingly to expel hot water relatively slowly at relatively low pressure or relatively quickly at relatively high pressure. However, the mechanism of EP'112 does not provide the user with proper feedback during operation, allowing the user to adjust the speed and pressure. If the lever is not operated correctly, the user will not be able to easily obtain the correct and constant pressure, and therefore the extraction of coffee grounds will be incomplete. Thus, it is clear that the quality of the coffee obtained depends entirely on the speed at which the user operates the lever. However, without proper feedback, the user will only know that the pressure established is insufficient, and his attempt to brew coffee will fail until he has finished operating the device. Therefore, users without sufficient knowledge and / or operational skills cannot easily produce qualitative espresso.

[0005] US10182678 discloses another manual coffee machine. The device according to US'678 shows the same drawbacks because the correct operation of the lever is entirely determined by the user. Users without sufficient knowledge and / or operating skills will not be able to successfully generate constant and / or sufficiently high pressure to extract coffee grounds and obtain a qualitative espresso.

[0006] Therefore, there is still a need in the art for a manual coffee machine that allows for simple and precise operation, even by inexperienced users, to produce the optimal pressure for brewing a decent espresso.

[0007] The present invention aims to solve at least some of the above-mentioned problems and disadvantages. Summary of the Invention

[0008] The present invention and its embodiments are intended to provide solutions to one or more of the aforementioned disadvantages. Therefore, the present invention relates to a manual coffee press.

[0009] Specifically, the present invention is defined by the following non-limiting embodiments:

[0010] 1. A manual coffee press, comprising:

[0011] a. A pressing assembly, comprising a column, a push rod, and an operating lever, wherein...

[0012] i. The operating lever is rotatably connected to the axial end of the column, and wherein the operating lever and the column are configured to rotate about an eccentric axis.

[0013] ii. The operating lever is rotatably connected to the axial end of the push rod, and wherein the operating lever and the push rod are configured to rotate about a central axis.

[0014] b. A brewing assembly comprising a brewing head, a liquid container, and a piston, wherein the piston is configured to move through the liquid container to compress liquid through the brewing head.

[0015] The push rod of the pressing component is configured to actuate the piston of the brewing component, wherein the push rod includes a first pin and the piston includes a toothed comb, and wherein the first pin and the toothed comb are releasably connected to each other.

[0016] 2. The manual coffee press according to embodiment 1, wherein the pressing assembly includes a retaining rod rotatably connected to the post, and the retaining rod includes a second pin, wherein the second pin and the toothed comb are releasably connected to each other.

[0017] 3. The manual coffee press according to embodiment 1 or 2, wherein the pressing assembly includes a gas spring, the gas spring having a first end and a second end, the first end being connected to the column, and the second end being connected to the push rod.

[0018] 4. The manual coffee press according to any one of embodiments 1 to 3, wherein the pressing assembly includes a first spring connected to the push rod and the post, and configured to push the first pin toward the toothed comb.

[0019] 5. The manual coffee press according to any one of embodiments 2 to 4, wherein the pressing assembly includes a second spring connected to the retaining rod and the post, and configured to push the second pin toward the toothed comb.

[0020] 6. The manual coffee press according to any one of embodiments 1 to 5, wherein the operating lever includes a third pin, and the push rod includes a sliding groove having axial groove edges, wherein the third pin is slidably mounted between the two axial groove edges.

[0021] 7. The manual coffee press according to Embodiment 6, wherein the movement of the third pin from the edge of the first axial groove to the edge of the second axial groove corresponds to the movement of the first pin of the push rod over the distance between two consecutive teeth of the toothed comb.

[0022] 8. The manual coffee press according to embodiment 6 or 7, wherein the movement of the third pin beyond the edge of the first axial groove or the edge of the second axial groove causes the push rod to rotate relative to the toothed comb.

[0023] 9. The manual coffee press according to any one of embodiments 6 to 8, wherein the retaining rod includes a fourth pin and the push rod includes a notch, wherein the fourth pin and the notch are configured for rotational movement of the push rod relative to the toothed comb to cause a corresponding rotational movement of the retaining rod relative to the toothed comb.

[0024] 10. The manual coffee press according to any one of embodiments 1 to 9, wherein the toothed comb of the piston includes at least four teeth, preferably at least five teeth.

[0025] 11. The manual coffee press according to any one of embodiments 1 to 10, wherein the piston includes a pressure valve on the axial side facing the liquid container, thereby allowing pressure control inside the liquid container.

[0026] 12. The manual coffee press according to any one of embodiments 1 to 11, wherein the liquid container includes a liquid jet breaker on the side facing the brewing head, the liquid jet breaker including a plurality of openings.

[0027] 13. The manual coffee press according to any one of Embodiments 1 to 12, wherein the liquid container is removable from the brewing assembly.

[0028] 14. A method for making coffee using a manual coffee press according to any one of Examples 1 to 13.

[0029] 15. The method of claim 14, wherein the coffee press comprises a pressing assembly and a brewing assembly, the method comprising the following steps:

[0030] a. Prepare the brewing assembly, which includes a brewing head, a liquid container, and a piston, wherein the piston is configured to move through the liquid container to compress liquid through the brewing head, thereby...

[0031] i. Fill the liquid container of the brewing assembly with a suitable extraction liquid.

[0032] ii. Fill the brewing head of the brewing assembly with a suitable substance to be extracted.

[0033] b. Operating the pressing assembly, the pressing assembly including a column, a push rod, and an operating lever, wherein the operating lever is rotatably connected to an axial end of the column, and wherein the operating lever and the column are configured to rotate about an eccentric axis, and wherein the operating lever is rotatably connected to an axial end of the push rod, and wherein the operating lever and the push rod are configured to rotate about a central axis, wherein the push rod of the pressing assembly is configured to actuate a piston of the brewing assembly, the push rod including a first pin and the piston including a toothed comb, wherein the first pin and the toothed comb are releasably connected to each other, and wherein the step of operating the pressing assembly includes: repeatedly operating the operating lever, thereby moving the piston through the liquid container, thereby squeezing the extractable liquid through the substance to be extracted, thus causing the prepared coffee to leave the brewing head. Attached Figure Description

[0034] Figure 1A A front view of a manual coffee press according to a preferred embodiment of the present invention is shown.

[0035] Figure 1B A side view of a manual coffee press according to a preferred embodiment of the present invention is shown.

[0036] Figure 1CA rear view of a manual coffee press according to a preferred embodiment of the present invention is shown.

[0037] Figure 2 A perspective view of a manual coffee press according to a preferred embodiment of the present invention is shown.

[0038] Figure 3A A cross-sectional side view of a manual coffee press according to a preferred embodiment of the present invention is shown.

[0039] Figure 3B Another cross-sectional side view of a manual coffee press according to a preferred embodiment of the present invention is shown.

[0040] Figure 4 A brewing head and liquid container according to a preferred embodiment of the present invention are shown.

[0041] Figure 5 A cross-sectional side view of a piston according to a preferred embodiment of the present invention is shown. Detailed Implementation

[0042] This invention relates to a manual coffee press.

[0043] Unless otherwise defined, all terms (including technical and scientific terms) used in this disclosure have the meanings commonly understood by one of ordinary skill in the art to which this invention pertains. Further guidance includes terminology definitions to better understand the teachings of this invention.

[0044] As used in this document, the following terms have the following meanings:

[0045] As used herein, “a,” “an,” and “the” refer to singular and plural indicators, respectively, unless the context clearly indicates otherwise. For example, “a fiber” means one or more fibers.

[0046] As used herein, “comprising” and “constituting” are synonymous with “including” or “containing”, and are inclusive or open-ended terms that specify the presence of, for example, components, and do not exclude or preclude the presence of additional, unlisted components, features, elements, components, or steps known in the art or disclosed herein.

[0047] The range of values ​​represented by the endpoints includes all the values ​​and fractions contained within that range, as well as the endpoints they represent.

[0048] Throughout this specification, references to "an embodiment" or "an embodiment" mean that a particular feature, structure, or characteristic described in connection with that embodiment is included in at least one embodiment of the invention. Therefore, the phrases "in an embodiment" or "in one embodiment" appearing throughout this specification do not necessarily refer to the same embodiment, but may refer to the same embodiment. Furthermore, in one or more embodiments, specific features, structures, or characteristics can be combined in any suitable manner, as will be apparent to those skilled in the art from this disclosure.

[0049] A first aspect of the present invention relates to a manual coffee press, the manual coffee press comprising:

[0050] a. A pressing assembly, comprising a column, a push rod, and an operating lever, wherein...

[0051] i. The operating lever is rotatably connected to the axial end of the column, and wherein the operating lever and the column are configured to rotate about an eccentric axis.

[0052] ii. The operating lever is rotatably connected to the axial end of the push rod, and wherein the operating lever and the push rod are configured to rotate about a central axis.

[0053] b. A brewing assembly comprising a brewing head, a liquid container, and a piston, wherein the piston is configured to move through the liquid container to compress liquid through the brewing head.

[0054] The push rod of the pressing component is configured to actuate the piston of the brewing component, wherein the push rod includes a first pin and the piston includes a toothed comb, and wherein the first pin and the toothed comb are releasably connected to each other.

[0055] The term "pressing assembly" as used herein refers to any device or combination of devices suitable for operation of this coffee press by a user. In this respect, while other coffee-making devices typically require a power source, this invention is driven by the user through manual operation of the pressing assembly. Specifically, the lever described herein is operated by the user to transmit force to the push rod, which in turn actuates the piston.

[0056] According to the present invention, "brewing assembly" should be interpreted as any device or combination of devices capable of brewing beverages (particularly coffee). Alternatively, the brewing assembly of the present invention can be used to brew tea or other beverages based on the extraction of solids (e.g., ground coffee, tea, herbs, or combinations thereof). Thus, the brewing assembly includes a "brewing head," which is well known in the art and should be interpreted as a holder for grinding coffee. The brewing assembly also includes a liquid container, which should be filled with hot water (if not boiling water) for making coffee. By actuating a piston, the water is compressed through the ground coffee, thereby producing a beverage, specifically coffee, and more specifically espresso. Alternatively, the present invention also allows for the brewing of tea, infusions, or combinations thereof.

[0057] "Comb," more specifically "toothed comb" as used herein, refers to a piston element of a particular shape comprising a plurality of rigid teeth, each tooth being configured to be substantially perpendicular to the longitudinal line of the piston, wherein the teeth are configured such that a pin, specifically a first pin according to the invention, can be releasably engaged between each pair of teeth.

[0058] According to the present invention, a "push rod" refers to a rod whose pushing motion actuates a piston. The push rod includes a first pin releasably connected to the piston, specifically to a toothed comb of the piston. Thus, the piston can be pushed toward the brewing assembly, particularly through the liquid container.

[0059] The pressing assembly described herein has the advantage that the operation of the lever does not correspond to the complete movement of the piston from its initial position (i.e., the furthest movement away from the liquid container) to its final position (i.e., the furthest movement within the liquid container). Instead, the operation of the lever corresponds to the piston's stroke, which is incremental and corresponds only to a predetermined distance between two or more teeth.

[0060] The repeated operation of the joystick therefore corresponds to the following sequence of events:

[0061] - The first pin connects to the starting tooth of the toothed comb;

[0062] When the lever is operated toward its forward position, the first pin of the push rod pushes the piston toward the liquid container.

[0063] - When the operating lever returns to its starting position, the first pin is released from the starting tooth, moves toward the subsequent tooth, and can be releasably engaged with the subsequent tooth.

[0064] As a result, the repetitive operation of the lever causes the piston to move from its starting position to its ending position in predetermined increments, thus easily achieving optimal pressure and brewing time and providing real-time feedback to the user during operation. In fact, the user will feel the counter-pressure and speed of the mechanism, thus receiving valuable feedback during operation. Therefore, the user does not need extensive knowledge of how to operate the device, how quickly to press the lever, or how different operating speeds affect brewing time, pressure, extraction, and the final quality of the coffee. The user will gain sufficient operating experience while using this coffee press and will easily learn and / or know how to prepare good coffee.

[0065] Preferably, the pressing assembly of the manual coffee press includes a retaining rod rotatably connected to the post, and the retaining rod includes a second pin, wherein the second pin and the toothed comb are releasably connected to each other.

[0066] The term "holding lever" in this document refers to a lever capable of holding the piston in the forward position relative to the toothed comb, and includes a second pin releasably coupled to the toothed comb. The repeated operation of the lever therefore corresponds to the following sequence of events:

[0067] - The first pin and the second pin are connected to the first and second starting teeth of the toothed comb;

[0068] - When the operating lever is operated toward its forward position, the first pin of the push rod pushes the piston toward the liquid container, while the second pin is released from the second starting tooth, thereby allowing the liquid container to move;

[0069] When the operating lever returns to its starting position, the second pin engages with the subsequent second tooth, thereby holding the piston in its forward position, while the first pin is released from the first starting tooth, moves toward the subsequent first tooth, and can be releasably engaged with that subsequent first tooth.

[0070] As a result, repeated operation of the lever causes the piston to move from its starting position to its ending position in predetermined increments, where the first pin is the driving force that moves the piston to the forward position, and the second pin is the holding force that prevents the piston from moving back to its starting position. Thus, with this configuration, the piston is only allowed to move unidirectionally from its starting position to its ending position (i.e., toward and within the liquid container).

[0071] According to another embodiment, the pressing assembly includes a gas spring having a first end and a second end, the first end being connected to the post and the second end being connected to the push rod.

[0072] According to the invention, the term "gas spring" should be interpreted as a type of spring that, unlike typical mechanical springs that rely on elastic deformation, uses compressed gas contained within a sealed cylinder sealed by a sliding piston to pneumatically store potential energy and withstand external forces applied in a direction parallel to the piston axis. According to embodiments of the invention, the gas spring applies pressure designed to move the piston back to its starting position and is particularly useful for restoring the pressing assembly to its initial state. In operation, the coffee press will thus allow the piston to move incrementally from its starting position to its ending position via the operation of the lever. Once the piston's advance to its ending position is complete, the gas spring is able to push the piston back to its starting position, thereby allowing the start of a new operating cycle and further improving the usability of the coffee press.

[0073] In some embodiments, the pressing assembly includes a first spring coupled to the push rod and the post, and configured to push the first pin toward the toothed comb.

[0074] In this article, "spring" refers to an elastic object that stores mechanical energy. Springs are typically made of spring steel. As described herein, the spring pushes the first pin toward the toothed comb, and thus the construction of the first pin and consequently the push rod is releasably connected to the toothed comb, thereby allowing smooth operation of the pressing assembly and providing proper movement of the piston toward the forward position.

[0075] According to another embodiment, the pressing assembly includes a second spring coupled to the retaining rod and the post, and configured to push the second pin toward the toothed comb. The spring described herein pushes the second pin toward the toothed comb, and thus further improves the configuration in which the second pin and consequently the retaining rod are releasably coupled to the toothed comb, thereby allowing smooth operation of the pressing assembly and providing proper retention of the piston.

[0076] According to some embodiments, the operating lever includes a third pin, and the push rod includes a sliding groove having axial groove edges, wherein the third pin is slidably mounted between the two axial groove edges. The presence of the sliding groove including two axial groove edges allows for defining two movement boundaries of the operating lever. Accordingly, the user understands between which positions the operating lever should be operated to effectively operate the push mechanism of the coffee press.

[0077] Preferably, the movement of the third pin from the edge of the first axial groove to the edge of the second axial groove corresponds herein to the movement of the first pin of the push rod over the distance between two consecutive teeth of the toothed comb, thereby allowing the piston to advance incrementally with each actuation of the lever.

[0078] According to another embodiment, movement of the third pin beyond the edge of the first or second axial groove causes rotational movement of the push rod relative to the toothed comb. Accordingly, by pushing the operating rod further than the boundary defined by these axial groove edges, the push rod can be rotated away from the toothed comb, thereby releasing the first pin from the toothed comb.

[0079] In some embodiments of the manual coffee press according to the invention, the retaining rod includes a fourth pin, and the push rod includes a notch, wherein the fourth pin and the notch are configured for rotational movement of the push rod relative to the toothed comb to cause a corresponding rotational movement of the retaining rod relative to the toothed comb. Accordingly, by pushing the operating lever further than the boundary defined by the edges of these axial grooves, the push rod can be rotated away from the toothed comb, thereby releasing the first pin from the toothed comb. Simultaneously, the fourth pin of the retaining rod hooks into the notch of the push rod, thereby allowing the retaining rod to rotate away from the toothed comb, thereby releasing the second pin from the toothed comb. In this configuration, the movement of the operating lever further than the boundary defined by the edges of the axial grooves causes both the push rod and the retaining rod to rotate, disengaging the first and second pins from the toothed comb of the piston. Accordingly, the movement of the operating lever completely disengages the piston, allowing the piston to return to its initial position.

[0080] In these embodiments, typical operation of the coffee press by the user would therefore involve repeated operation of the lever, causing the piston to move from its starting position to its ending position, followed by successive operation of the lever further than the boundary defined by the edge of the axial slot, thus causing the piston to disengage and allowing it to return to its starting position.

[0081] Some embodiments of the present invention relate to a manual coffee press, wherein the toothed comb of the piston comprises at least four teeth. Therefore, the presence of the four teeth on the toothed comb involves a three-step operation. Preferably, the toothed comb of the piston comprises at least five teeth, more preferably at least six teeth, and even more preferably at least seven teeth.

[0082] According to some embodiments, the teeth of the toothed comb have a height between 2 mm and 20 mm. Preferably, the height of the teeth of the toothed comb is between 3 and 9 mm, more preferably between 5 and 7 mm.

[0083] Some embodiments include: the individual teeth of the toothed comb are spaced between 4 mm and 40 mm apart. Preferably, the consecutive teeth are spaced 6 to 18 mm apart, more preferably 10 to 12 mm apart.

[0084] According to another embodiment, the piston includes a pressure valve on the axial side facing the liquid container, thereby allowing pressure control inside the liquid container.

[0085] The terms "pressure valve," "pressure reducing valve," or "pressure relief valve (PRV)" refer to a safety valve used to control or limit pressure in a system. Otherwise, pressure could accumulate and cause process chaos, instrument or equipment malfunction, or fire. Pressure is released by allowing pressurized fluid to flow out of the system through an auxiliary path. Safety valves are typically designed or configured to open at a predetermined set pressure to protect pressure vessels and other equipment from pressures exceeding their design limits. When the set pressure is exceeded, the pressure reducing valve becomes the "path of least resistance" as it is forced to open and a portion of the fluid is diverted through the auxiliary path.

[0086] The pressure valve in this document is used to prevent overpressure inside the brewing assembly. Accordingly, the pressure valve preferably maintains the pressure in the brewing assembly between 0 bar and 25 bar, more preferably between 0 bar and 20 bar.

[0087] According to some embodiments, the liquid container includes a liquid jet disruptor on the side facing the brewing head, the liquid jet disruptor comprising a plurality of openings. Therefore, the presence of the liquid jet disruptor allows for uniform distribution of water within the brewing head, thereby allowing for optimal extraction of the ground coffee.

[0088] A manual coffee press according to some embodiments includes a liquid container removable from the brewing assembly. In this way, the liquid container can be filled while assembled within the brewing assembly, or otherwise filled upon removal from the brewing assembly.

[0089] A second aspect of the present invention relates to a method for making coffee using a manual coffee press, the coffee press including a pressing component and a brewing component, the method comprising the following steps:

[0090] a. Prepare the brewing assembly, which includes a brewing head, a liquid container, and a piston, wherein the piston is configured to move through the liquid container to compress liquid through the brewing head, thereby...

[0091] i. Fill the liquid container of the brewing assembly with a suitable extraction liquid.

[0092] ii. Fill the brewing head of the brewing assembly with a suitable substance to be extracted.

[0093] b. Operating the pressing assembly, the pressing assembly including a column, a push rod, and an operating lever, wherein the operating lever is rotatably connected to an axial end of the column, and wherein the operating lever and the column are configured to rotate about an eccentric axis, and wherein the operating lever is rotatably connected to an axial end of the push rod, and wherein the operating lever and the push rod are configured to rotate about a central axis, wherein the push rod of the pressing assembly is configured to actuate a piston of the brewing assembly, the push rod including a first pin and the piston including a toothed comb, wherein the first pin and the toothed comb are releasably connected to each other, and wherein the step of operating the pressing assembly includes: repeatedly operating the operating lever, thereby moving the piston through the liquid container, thereby squeezing the extractable liquid through the substance to be extracted, causing the prepared coffee to leave the brewing head.

[0094] In view of the foregoing, and particularly with respect to coffee as a beverage of choice, the term "extraction liquid" refers to water, while "substance to be extracted" refers to ground coffee. Alternatively, the substance to be extracted may be tea or its equivalent. Before introducing the extraction liquid into the liquid container, it is preferably heated to a temperature of 20 to 100°C. Preferably, the extraction liquid is heated to a temperature of 90 to 98°C, more preferably to a temperature of 92 to 96°C. These temperatures allow for optimal extraction of the ground coffee using the coffee press according to the invention.

[0095] Preferably, the manual coffee press disclosed in this method is a coffee press according to any embodiment of the first aspect of the present invention.

[0096] The invention is further described below with reference to the accompanying drawings, which are not intended to, and should not be construed as, limiting the scope of the invention.

[0097] Figure 1A , Figure 1B and Figure 1C Front, side and rear views of a manual coffee press according to a preferred embodiment of the present invention are shown respectively. Figure 2 A perspective view of a manual coffee press according to a preferred embodiment of the present invention is shown. Furthermore, Figure 3A and Figure 3B To better illustrate the interior of the coffee press, a cross-sectional side view of a manual coffee press according to a preferred embodiment of the invention is shown.

[0098] The manual coffee press described herein illustrates a pressing assembly 1, which includes a column 3, a push rod 4, and an operating lever 5, wherein the operating lever 5 is rotatably connected to an axial end 3a of the column 3. The coffee press also includes a brewing assembly 2, which includes a brewing head 8, a liquid container 9, and a piston, wherein the piston is configured to move through the liquid container 9 to compress liquid through the brewing head 8. The operating lever 5 and the column 3 are also shown configured to rotate about an eccentric axis 7. In this document, the operating lever 5 is also rotatably connected to an axial end 4a of the push rod 4, wherein the operating lever 5 and the push rod 4 are configured to rotate about a central axis 6. The push rod 4 of the pressing assembly 1 is configured to actuate the piston 10 of the brewing assembly 2, wherein the push rod 4 includes a first pin 11 and the piston 10 includes a toothed comb 12, wherein the first pin 11 and the toothed comb 12 are releasably connected to each other. The coffee press allows the operation of lever 5 to correspond to the stroke of piston 10, which is incremental and corresponds only to a predetermined distance between two or more teeth. Repeated operation of lever 5 causes piston 10 to move from its starting position to its ending position in predetermined increments, thus easily achieving optimal pressure and brewing time. As a result, the user does not need extensive knowledge of operating the device, how quickly lever 5 should be pressed, or how different operating speeds affect brewing time, pressure, extraction, and the final quality of the coffee. Instead, the mechanism provides real-time feedback to the user during operation, allowing the user to feel the counter-pressure and speed of the mechanism. Consequently, the user will develop sufficient operating experience while using this coffee press and will easily learn and / or know how to prepare good coffee without requiring extensive prior knowledge. For ease of use, the coffee press is provided with one or more connection devices 28 for connecting the coffee press to, for example, a wall. The coffee press may also provide a cup holder and / or a liquid collection container 26, which includes a grid 27 to allow any spilled liquid to permeate and be collected.

[0099] The pressing assembly 1 of the manual coffee press includes a retaining rod 13 rotatably connected to the post 3, and the retaining rod 13 includes a second pin 14, wherein the second pin 14 and the toothed comb 12 are releasably connected to each other. Repeated operation of the operating lever 5 causes the piston 10 to move from its starting position to its ending position in predetermined increments, wherein the first pin 11 is the driving force that moves the piston 10 to the forward position, and the second pin 14 is the holding force that prevents the piston 10 from moving back to its starting position. Thus, with this configuration, the piston 10 is only allowed to move unidirectionally from its starting position toward its ending position (i.e., toward the liquid container 9 and inside the liquid container 9).

[0100] A gas spring 15 is also shown, comprising a first end 15a and a second end 15b, the first end 15a being coupled to a post 3 and the second end 15b being coupled to a push rod 4. The gas spring 15 applies pressure intended to move the piston 10 back to its initial position and is particularly useful for restoring the pressing assembly 1 to its initial state. The pressing assembly 1 also includes a first spring 16 coupled to the push rod 4 and the post 3 and configured to push a first pin 11 toward the toothed comb 12. Similarly, a second spring 17 is provided, coupled to a retaining rod 13 and the post 3 and configured to push a second pin 14 toward the toothed comb 12.

[0101] It is also shown that the operating lever 5 may include a third pin 18, and the push rod 4 may include a sliding groove 19 having axial groove edges 19a, 19b, wherein the third pin 18 is slidably mounted between the two axial groove edges 19a, 19b. The presence of the sliding groove 19 including the two axial groove edges 19a, 19b allows for defining two movement boundaries of the operating lever 5. The movement of the third pin 18 from the first axial groove edge 19a to the second axial groove edge 19b corresponds herein to the movement of the first pin 11 of the push rod 4 over the distance between two consecutive teeth of the toothed comb 12, thereby allowing the piston 10 to advance incrementally with each operation of the operating lever 5. The movement of the third pin 18 beyond the first axial groove edge 19a or the second axial groove edge 19b causes herein a rotational movement of the push rod 4 relative to the toothed comb 12. Accordingly, by pushing the operating lever 5 further than the boundary defined by the axial groove edges 19a, 19b, the push rod 4 can be rotated away from the toothed comb 12, thereby releasing the first pin 11 from the toothed comb 12. Furthermore, the retaining rod may include a fourth pin 20, and the push rod 4 may therefore include a notch 21, wherein the fourth pin 20 and the notch 21 are configured for rotational movement of the push rod 4 relative to the toothed comb 12 to cause a corresponding rotational movement of the retaining rod 13 relative to the toothed comb 12. Accordingly, by pushing the operating rod 5 further than the boundary defined by the axial groove edges 19a, 19b, the push rod 4 can be rotated away from the toothed comb 12, thereby releasing the first pin 11 from the toothed comb 12. Simultaneously, the fourth pin 20 of the retaining rod 13 hooks into the notch 21 of the push rod 4, thereby causing the retaining rod 13 to rotate away from the toothed comb 12, thereby releasing the second pin 14 from the toothed comb 12. In this configuration, the movement of the operating rod 5 further than the boundary defined by the axial groove edges 19a, 19b causes both the push rod 4 and the retaining rod 13 to rotate, disengaging the first pin 11 and the second pin 14 from the toothed comb 12 of the piston 10. Accordingly, the movement of the operating lever 5 causes the piston 10 to completely disengage, allowing the piston 10 to return to its initial position.

[0102] As shown in the figure, the piston 10 may include a pressure valve 22 on the axial side facing the liquid container 9, thereby allowing pressure control inside the liquid container 9. For further details, Figure 5 A cross-sectional side view of a piston 10 according to a preferred embodiment of the invention is shown. The presence of a pressure valve 22 herein serves to prevent overpressure within the brewing assembly 2. The pressure valve 22 includes a spring 30 that provides appropriate pressure within the piston 10. The piston 10 is also shown to be provided with a toothed comb 12, which includes a plurality of teeth 12a. Facing the liquid container, the piston 10 includes a piston plate 10a, which is fluid-tightly and gas-tightly fitted to the piston 10 using a plurality of bearings 31.

[0103] Figure 4 A brewing head 8 and a liquid container 9 according to a preferred embodiment of the invention are also shown. The liquid container 9 includes a liquid jet disruptor 23 on the side facing the brewing head 8, the liquid jet disruptor 22 comprising a plurality of openings. Therefore, the presence of the liquid jet disruptor 22 allows for uniform distribution of water within the brewing head 8, thereby allowing for optimal extraction of the ground coffee. The brewing head 8 is provided with a handle 25 and one or two outlets 24 through which the prepared coffee exits the coffee press. The liquid container 9 is removable from the coffee press and rests on the brewing head 8 via a mounting device 29.

[0104] List of Numbered Items

[0105] 1 Press component

[0106] 2 brewing components

[0107] 3 columns

[0108] Axial end of column 3a

[0109] 4 putters

[0110] axial end of 4a push rod

[0111] 5 control levers

[0112] 6 central axis

[0113] 7 Eccentric axis

[0114] 8 brewing heads

[0115] 9 Liquid Containers

[0116] 10 Pistons

[0117] 10a Piston Plate

[0118] The first pin of the 11-push rod

[0119] 12-tooth comb

[0120] 12a each tooth

[0121] 13 retaining bars

[0122] 14. Holder rod second pin

[0123] 15 gas springs

[0124] The first end of the 15a gas spring

[0125] 15b The second end of the gas spring

[0126] 16. First spring of the pressing assembly

[0127] 17. The second spring of the pressing assembly

[0128] The third pin of the 18-lever

[0129] 19 Sliding groove of push rod

[0130] 19a First axial end of the sliding groove

[0131] 19b Second axial end of the sliding groove

[0132] 20-inch retainer fourth pin

[0133] 21. Notch of the push rod

[0134] 22 Pressure Valve

[0135] 23 Liquid Jet Breaker

[0136] 24 brewing head outlet

[0137] 25 brewing head handle

[0138] 26 cup holders and / or liquid collection containers

[0139] 27. Grille for liquid collection container

[0140] 28 connecting devices

[0141] 29. Assembly device for brewing head

[0142] 30 pressure valve spring

[0143] 31 Piston Plate Bearing

Claims

1. A manual coffee press, comprising: a. A pressing assembly, comprising a column, a push rod, and an operating lever, wherein... i. The operating lever is rotatably connected to the axial end of the column, and wherein the operating lever and the column are configured to rotate about an eccentric axis. ii. The operating lever is rotatably connected to the axial end of the push rod, and wherein the operating lever and the push rod are configured to rotate about a central axis. b. A brewing assembly comprising a brewing head, a liquid container, and a piston, wherein the piston is configured to move through the liquid container to compress liquid through the brewing head. The push rod of the pressing component is configured to actuate the piston of the brewing component, wherein the push rod includes a first pin and the piston includes a toothed comb, and wherein the first pin and the toothed comb are releasably connected to each other.

2. The manual coffee press according to claim 1, wherein, The pressing assembly includes a retaining rod rotatably coupled to the post, and the retaining rod includes a second pin, wherein the second pin and the toothed comb are releasably coupled to each other.

3. The manual coffee press according to claim 1 or 2, wherein, The pressing assembly includes a gas spring, which has a first end and a second end, the first end being connected to the post and the second end being connected to the push rod.

4. The manual coffee press according to claim 1 or 2, wherein, The pressing assembly includes a first spring connected to the push rod and the post, and configured to push the first pin toward the toothed comb.

5. The manual coffee press according to claim 2, wherein, The pressing assembly includes a second spring connected to the retaining rod and the post, and configured to push the second pin toward the toothed comb.

6. The manual coffee press according to claim 2, wherein, The operating lever includes a third pin, and the push rod includes a sliding groove having a first axial groove edge and a second axial groove edge, wherein the third pin is slidably mounted between the first axial groove edge and the second axial groove edge.

7. The manual coffee press according to claim 6, wherein, The movement of the third pin from the edge of the first axial groove to the edge of the second axial groove corresponds to the movement of the first pin of the push rod over the distance between two consecutive teeth of the toothed comb.

8. The manual coffee press according to claim 6 or 7, wherein, The movement of the third pin beyond the edge of the first axial groove or the edge of the second axial groove causes the push rod to rotate relative to the toothed comb.

9. The manual coffee press according to claim 6 or 7, wherein, The retaining rod includes a fourth pin, and the push rod includes a notch, wherein the fourth pin and the notch are configured for rotational movement of the push rod relative to the toothed comb to cause a corresponding rotational movement of the retaining rod relative to the toothed comb.

10. The manual coffee press according to claim 1 or 2, wherein, The piston's toothed comb includes at least four teeth.

11. The manual coffee press according to claim 1 or 2, wherein, The piston includes a pressure valve on the axial side facing the liquid container, thereby allowing pressure control inside the liquid container.

12. The manual coffee press according to claim 1 or 2, wherein, The liquid container includes a liquid jet breaker on the side facing the brewing head, the liquid jet breaker including a plurality of openings.

13. The manual coffee press according to claim 1 or 2, wherein, The liquid container can be removed from the brewing assembly.

14. A method for making coffee using a manual coffee press according to any one of claims 1 to 13.

15. The method of claim 14, wherein the coffee press comprises a pressing assembly and a brewing assembly, the method comprising the following steps: a. Prepare the brewing assembly, which includes a brewing head, a liquid container, and a piston, wherein the piston is configured to move through the liquid container to compress liquid through the brewing head, thereby... i. Fill the liquid container of the brewing assembly with a suitable extraction liquid. ii. Fill the brewing head of the brewing assembly with a suitable substance to be extracted. b. Operating the pressing assembly, the pressing assembly including a column, a push rod, and an operating lever, wherein the operating lever is rotatably connected to an axial end of the column, and wherein the operating lever and the column are configured to rotate about an eccentric axis, and wherein the operating lever is rotatably connected to an axial end of the push rod, and wherein the operating lever and the push rod are configured to rotate about a central axis, wherein the push rod of the pressing assembly is configured to actuate a piston of the brewing assembly, the push rod including a first pin and the piston including a toothed comb, wherein the first pin and the toothed comb are releasably connected to each other, and wherein the step of operating the pressing assembly includes: repeatedly operating the operating lever, thereby moving the piston through the liquid container, thereby squeezing the extractable liquid through the substance to be extracted, causing the prepared coffee to leave the brewing head.

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