WO2023086047A1

WO2023086047A1 - Manual coffee grinder

Info

Publication number: WO2023086047A1
Application number: PCT/TR2022/050306
Authority: WO
Inventors: Nurullah OZGAT; Ahmet Ergun; Yavuz BOZKURT; Nusret ATASAYAR; Bilal MEKIKCI; Ahmet Yasir KARAKUS; Enes Huseyin ERGUN
Original assignee: Huss Muhendislik Ltd Sirketi
Current assignee: Huss Muhendislik Ltd Sirketi
Priority date: 2021-11-11
Filing date: 2022-04-07
Publication date: 2023-05-19
Anticipated expiration: 2024-05-11

Abstract

The invention is related to a manual coffee grinder (1), which enables the users to grind the coffee beans in the desired particle size by means of a hand drive without shaft, bushing and spring mechanisms.

Description

MANUAL COFFEE GRINDER

Technical Field

The invention is related to a manual coffee grinder that is used for grinding roasted coffee beans.

In particular, the invention is related to a manual coffee grinder that enables users to grind coffee beans in the desired particle size without shaft, bushing and spring mechanisms, and accomplishes this by means of the user's hand drive. The ground beans are brewed with an appropriate method and made ready for drinking.

Prior Art

Coffee is a beverage that is preferred commonly by people in working, entertainment and resting times with its concentration-enhancing and refreshing properties, from the past to the present. Especially, it is known that users process coffee beans with different techniques in order to capture their unique tastes. In order to brew good coffee, the first condition is to grind the coffee in the right size and homogeneously. There are many brewing methods to obtain the most delicate flavors of coffee. However, special grinding degrees are required for each brewing or cooking method, and this grinding process is performed with a coffee grinder.

The existing coffee grinders of today grind the coffee beans by moving the blades by turning the shaft at the center of the mill. The fixing of the shaft is made from only two points. The shaft rotates the blade inside the grinder. In the designs produced in this way, access to the inside of the product is blocked for cleaning. The grinding adjustment of the grinder is made by moving the inner blade up and down. Since the object is to fix the blades by placing a spring on the inner blade in order to adjust the grinding of the grinder, the options for grinding are limited. Small blade diameter increases the grinding time and also the required power.

In the US patent document numbered US1485855A, there is a rotary valve inside the inlet, which is mounted to swing around a vertical pivot in both directions along a slot provided at the inlet, thereby being moved to and from the closed position, which is also equipped with an outwardly extending finger piece. The body of the enclosure is equipped with a discharge outlet at the bottom and contains a fixed burr that is aligned with the central inlet opening in the wall and has a central opening fixed to the wall.

In the US patent document numbered US2671617A, the inner end of the shaft carries a connecting tube at the inner end of the feed worm and extends through an externally threaded hub formed in the housing wall. The connecting tube has an annular slot or flange at a short distance from its outer end, and it is fixed to the outer end of the shaft, hub of an operating lever, and a ball seat is inserted between the hub of the handle and the outer end of the connecting tube.

The Chinese patent document numbered CN2269164Y includes a grinding cylinder, a grinding roller, a base and a hand-operated crank. The hand-operated crank is connected with a screw rod of the grinding roller; a fixing locking plate and a threadshaped regulating nut are arranged on the screw rod of the grinding roller; the outer side of the grinding roller and the inner side surface of the grinding roller are equipped with oblique teeth; a drawer is arranged at the base.

The Chinese document numbered CN204889733U relates to a hand coffee -mill, grind the inner core device including casing and hand coffee beans, hand coffee beans grind the setting of inner core device and be in the casing inside, the casing include casing and lower casing, lower casing include transparent inner shell and the suit lower metal casing outside transparent inner shell, lower metal casing side be provided with at least one peephole

The other Chinese document numbered CN204931446U relates to a hand coffee -mill beans machine, its characterized in that: including the outer mill of a cylindricality barrel with the middle section portion in the barrel that establishes, be equipped with the interior mill that grinds rather than the cooperation in the outer mill, interior mill is connected with the shaft ends that top -down penetrated in the barrel, the pivot upper end is supported in an adjustable ring, all threaded connection in adjustable ring periphery and the barrel upper portion, the utility model discloses hand coffee -mill beans machine simple structure, reasonable in design are favorable to grinding as required. On the basis of the documents referred to above, the problems caused by the products to the user during the grinding of the coffee provided the inventor with the means to develop a new product. Due to reasons such as the shaft, bushing and spring mechanisms constituting an obstacle for the users, rapid mechanical deterioration of the products, and inability to perform the grinding properly, the internal mechanism of the invention has been redesigned to produce a more durable, long-lasting and large- volume grinder.

Considering the current requirement mentioned above and the application of the known state of the art, in order to eliminate the disadvantages in question, the inventor presents a product that is easy to use, that does not cause cleaning problems and that is more durable than the products referred to in the previous art.

Brief Description of the Invention

The main object of the invention is to provide the users with the capability to easily grind coffee manually without the shaft, bushing and spring mechanisms and in a way that prevents wobbling.

Another object of the invention is to configure the grinder using of a small number of parts so that it does not cause cleaning difficulties for the user after the grinding process.

Another object of the invention is to make the coffee chamber on the top wider compared to a compact structure, make the grinding degree adjustable and to make the grinding processes suitable for different coffee brewing methods.

Another object of the invention is to enable the users to perform the grinding process in a shorter time by providing rotation in a wide angle while applying circular force with the hand drive.

Another object of the invention is to ensure that the product can be used in any desired place with its compact structure.

Another object of the invention is to enable the users to use the coffee grinding process with the help of their own body forces without using any power source.

In order to fulfill the objects described above, the invention has developed a design without the central shaft, bushing and spring, which are the main causes of wobbling, in order to prevent wobbling, which is the biggest problem of manual coffee grinders. Thereby, the inner blade is kept fixed and the rotational movement is transferred to the outer blade. These changes prevented wobbling by getting rid of the spring for the step adjustment and by making the mechanism move on a path, and also provided other advantages for the invention.

With the emptying of the center, a larger internal volume is obtained than in any other grinder; this makes it easier to clean the invention after use. As the product consists of two main parts, it becomes very easy to dismantle the parts of the grinder when detailed cleaning is required. The particle setting is moved to the outer surface of the device, the steps are removed, multiple options with 1080° motion range and infinite number of adjustment options are presented to the consumer, and the setting indicator is added and marked with sequential numbering so that the adjustment places are not forgotten.

The present invention provides many conveniences with its mentioned features in order to realize all the advantages mentioned above and that can be understood from the detailed explanation below.

The structural and characteristic features of the invention as well as all its advantages will be understood more clearly by means of the figures given below and the detailed explanation written with reference to these figures; therefore assessment should be made by considering these figures and their detailed explanations.

Brief Description of the Figures

Figure 1 is the exploded side view of the manual coffee grinder that is the subject of the invention.

Figure 2 is the side view of the manual coffee grinder that is the subject of the invention.

Figure 3 is the exploded perspective view of the manual coffee grinder that is the subject of the invention.

Reference Numbers

1- Manual Coffee Grinder 2- Body

2.1- Inner Blade

2.2- Inner Blade Connection Point

3- Cap

4- Arm

4.1- Knob

4.2- Knob Connection Point

5- Bottom Chamber

5.1- Gasket

6- Fixing Button

7- Outer Blade

8- Outer Blade Holder

8.1- Top Chamber

8.2- Bottom Bearing

9- Adjustment Ring

9.1- Indicator

9.2- Bearing Structure

Detailed Description of the Invention

In this detailed description, the manual coffee grinder (1) is explained for a better understanding of the subject and in a manner not to cause any limiting effect.

The body (2) has a hollow, geometric cylindrical form and contains at least one inner blade (2.1 ) in its inner middle part, which is used to crush the coffee beans.

The outer blade holder (8) is placed from the upper part of the said body (2). The upper part of the body (2) has an open structure for adding the coffee beans to be ground. The outer blade holder (8) contains at least one outer blade (7) which corresponds to the same axis in its lower part as the inner blade (2.1 ) inside the said body (2). When the user turns at least one arm (4) connected from its upper side, it rotates within the said body (2) independently of the body (2).

The adjustment ring (9) is located on the upper part of the said body (2) and after placing the said outer blade holder (8) inside the body, it provides for the adjustment of the coffee particle size that will be ground with a circular motion in a clockwise or counterclockwise direction.

The fixing button (6) is the part that fixes the adjustment ring (9). It is connected to the upper end parts of the said body (2) to fix the adjustment ring (9), which is first loosened in order to select the particle size of the coffee beans desired to be ground by means of the said adjustment ring (9), and after setting the particle size, it is tightened again to allow the user to adjust the adjustment ring (9).

The bottom chamber (5) is the section where the coffee beans are stored in a ready-to- brew state when they reach the desired size after the coffee beans remaining between the said fixed inner blade (2.1 ) and the said rotating outer blade (7) are crushed and broken by the rotation of the said outer blade holder (8).

The gasket (5.1 ) ensures that the said bottom chamber (5) is fixed to the said body (2).

The inner blade connection point (2.2) is located on the upper part of the said body (2) and is precisely mounted with the shrink fit method, and ensures the mounting of the inner blade (2.1 ) by means of screw.

The cap (3) prevents the particles from coming out during the grinding phase by ensuring the determination of the amount of coffee to be ground in the top chamber (8.1) inside the said outer blade holder (8).

The knob (4.1 ) enables the user to easily turn the outer blade holder (8), by holding the end of the said arm (4), which it is attached to the said outer blade holder, with the independent circular rotation it receives from the knob connection point (4.1 ).,

The top chamber (8.1 ) is the section in the cylindrical hollow part of the said outer blade holder (8) where the users add the coffee beans to be ground. The bottom bearing (8.2) is located at the bottom of the said outer blade holder (8) and provides to maintain the balance during the rotation process.

The indicator (9.1 ) is located on the upper part of the said outer blade holder (8) and provides for the setting of the particle size of the coffee to be ground.

The bearing structure (9.2) is the part placed on the bottom part of the said adjustment ring (9) and enables the adjustment ring (9) to be rotated smoothly on its axis on the said body (2).

In Figure 1 , the manual coffee grinder (1 ), which is the subject of the invention, is illustrated in assembled form; the cylindrical cap (3) engages into the top chamber (8.1) inside the outer blade holder (8). The diameter of the outer blade (7) is adjusted by turning the adjustment ring (9) by means of the fixing button (6) seen on the left side of the outer blade holder (8). On the right side of the said outer blade holder (8), there is an arm (4) that provides for the circular rotation of the mechanism and a knob (4.1 ) that acts as a handle. The adjustment ring (9) located at the bottom of the said outer blade holder (8) ensures that the desired coffee particle setting is adjusted by loosening it to the right in the side view, and by tightening to the left so that it remains fixed. The cylindrical body (2) located at the bottom part of the adjustment ring (9) comprises the inner blade connection point (2.2) on the top part and ensures that the inner blade (2.1 ) is mounted on a balanced axis. The bottom chamber (5), located at the bottom of the said body (2), is the hollow cylindrical chamber where the ground coffees are collected. The said bottom chamber (5) has a gasket (5.1) at the bottom so that it can smoothly engage into the said body (2).

In Figure 2, the manual coffee grinder (1 ), which is the subject of the invention, is illustrated in assembled form, ready for use. The indicator (9) located on the upper part of its cylindrical body (2) enables the users to set the grinding adjustment of the manual coffee grinder (1). In the indicator (9.1 ) mentioned above, the adjustment ring (9) is brought to the desired place by the user, and the ratio is set.

Figure 3 is the perspective view of the assembled form of manual coffee grinder (1), which is the subject of the invention, given in Figure 1 , and it shows the place where the said inner blade (2.1 ) can be mounted to the inner blade connection point (2.2) and the inner cylindrical structure of the said adjustment ring (9).

Claims

8

CLAIMS A manual coffee grinder (1 ), developed to enable the users to grind coffee beans in the desired particle size without shaft, bushing and spring mechanisms, wherein the said manual coffee grinder comprises the following; at least one body (2), which has a hollow cylindrical form and contains at least one inner blade (2.1 ) fixed at an angle of 90° to its vertical axis in its inner middle part that crushes the coffee beans, at least one outer blade holder (8), placed on the said body (2) on the vertical axis from the upper part, which is open at the top in order to add the coffee beans to be ground, that contains at least one outer blade (7) corresponding to the same axis with the inner blade (2) in the said body at the bottom, and that rotates independently of the body (2) within said body (2) by turning of at least one arm (4) that is connected from the upper side, by the user, at least one adjustment ring (9), which is located on the upper part of the said body (2) and provides for the adjustment of the coffee particle size to be ground with a clockwise or counterclockwise circular motion after placing the said outer blade holder inside the body, at least one fixing button (6), which is connected to the upper ends of the said body (2) to fix the adjustment ring (9), that is first loosened to select the particle size of the coffee beans desired to be ground by means of the said adjusting collar (9) in order to select the particle size of the coffee beans and then tightened to allow the user to fix the adjusting collar (9) after setting the particle size, a bottom chamber (5), where the coffee beans are stored in a ready-to-brew state when they reach the desired size after the coffee beans remaining between the said fixed inner blade (2.1 ) and the said rotating outer blade (7) are crushed and broken by the rotation of the said outer blade holder (8) and they pass from between the said rotating outer blade (7) and the said fixed inner blade (2.1 ), a rotating outer blade (7), which is fixedly located inside the outer blade holder (8) that comes directly over the vertical axis of the said body (2), 9 which is used to crush the coffee beans together with the inner blade (2.1 ) by turning the outer blade holder (8) by the user, a top chamber (8.1 ) that forms the cylindrical hollow part of the said outer blade holder (8) and into which the users add the coffee beans to be ground, a bottom bearing (8.2) located at the bottom of the outer blade holder (8) that supports the body strength when the body (2) is rotated by the user.

2. The manual coffee grinder (1 ) according to Claim 1 , wherein it comprises an inner blade connection point (2.2) located on the upper part of said body (2) that allows the said adjustment ring (9) to be rotated on the body and to be moved up/down.

3. The manual coffee grinder (1 ) according to Claim 1 , wherein it comprises a cap (3) located on the inside of the said outer blade holder (8) that provides for the protection of the coffee beans to be ground after they are placed in the top chamber (8.1 ).

4. The manual coffee grinder (1 ) according to Claim 1 , wherein it comprises a knob (4.1 ) located at the end of the said arm (4) and capable of independent circular rotation, which acts as a handle for turning of the said arm (4) by the user easily.

5. The manual coffee grinder (1 ) according to Claim 1 , wherein it comprises a knob connection point (4.2) that provides for the connection of said knob (4.1 ) with said arm (4) and that allows user to move the knob (4.1 ) a full turn relative with an angle of 360°.

6. The manual coffee grinder (1 ) according to Claim 1 , wherein it comprises a gasket (5.1 ) that connects the said top chamber (5) with the said body (2).

7. The manual coffee grinder (1 ) according to Claim 1 , wherein it comprises an indicator (9.1 ) located on the upper part of the said outer blade holder (8) that allows the user to select the 1080° coffee grinding size option in order to set the particle size of the coffee desired to be ground. 10

The manual coffee grinder (1 ) according to Claim 1 , wherein it comprises a bearing (9.2) placed on the bottom part of said adjustment ring (9) that enables the adjustment ring (9) to be rotated freely on its axis on said body (2).