Mechanism for grinding and adjusting the particle size of coffee beans, incorporated into a portable coffee grinder.

Abstract

The present invention patent application relates to a portable coffee grinder (M) having a grinding mechanism (1) and a portable housing (2), including a base (3) having an open compartment (4) and an internal compartment (5), a 12V power source / battery (6) and a 12V motor (7) controlled by a PWM circuit. The 12V motor (7) actuates a gearset (8) that converts high speed / low torque into low speed / high torque, located in the upper structure (9) having an opening cover (10) and a knob (17). The grinding mechanism (1) includes a gear (12), a movable grinding ring (13) and a static conical blade (14) which is mounted on a vertical shaft (15) and adjusted by an M6 screw (16) with a set of threads (16) connected to an adjusting knob (17). The coffee beans are introduced into a funnel-shaped structure (20) and ground between the movable grinding ring (13) and the static conical blade (14), ensuring that oils and aromas are retained. However, the grain size is adjusted by the vertical movement of the static conical blade (14) towards or away from the movable grinding ring (13), which movement is controlled by the adjusting knob (17). The invention for which protection is sought pertains to the field of coffee grinders used for processing beans into powder for consumption, including the domestic and commercial sectors and the like.

Description

1 / 7 Mechanism for grinding and adjusting the particle size of coffee beans, incorporated into a portable coffee grinder. BRIEF PRESENTATION

[001] This patent application was developed to solve the problems associated with conventional coffee grinders, which have a grinding ring and a grinding cone with teeth and / or collection channels. Both parts rotate relative to each other around a common axis. However, the opposing movement between the ring and the grinding cone creates an overflow channel that retains about 10% of the coffee powder generated during the grinding process, significantly affecting the palatability of subsequent coffee doses.

[002] In view of the aforementioned problems, the present invention aims to provide a portable coffee grinder, incorporating a grinding and adjustment mechanism to control the particle size of the ground coffee. Grinding is carried out by means of a movable grinding ring, which rotates around a static conical blade. The arrangement of said grinding mechanism allows for the direct grinding of coffee beans, eliminating the need for collection and overflow channels, resulting in a more efficient grinding process without the undesirable retention of coffee grounds.

[003] In summary, the mechanism of the present invention allows for the flow of approximately 98% of the ground coffee, reducing the loss to about 2%, in addition to ensuring the preservation of essential oils and aromas for a quality beverage. FIELD OF APPLICATION

[004] The invention that motivates this patent application relates to the field of coffee grinders applicable to the processing of ground coffee beans for consumption, including the domestic, commercial and similar sectors. BACKGROUND OF THE INVENTION

[005] It is known to experts in the field that manual and electric grinders are extremely important for obtaining fresh and flavorful coffee. Grinding coffee beans moments before preparation ensures the preservation of essential oils and aromas for a quality beverage. However, the two main types of Petition 870250068055, dated 04 / 08 / 2025, page 5 / 45 Of the 2 / 7 grinders available on the market—propeller, disc, and conical blade grinders—they face challenges and limitations regarding precision, quality, portability, and the investment required.

[006] Propeller grinders, in fact, demonstrate limitations in the precision and quality of the product obtained, since they do not have particle size adjustment. As indicated by industry experts, the lack of particle size control affects the extraction of components during the coffee brewing process, impacting the sensory characteristics of the beverage. Notably, finer grinds increase the contact area with water, facilitating the extraction of flavors and aromas. It is worth noting that propeller grinding devices have grinding control based on time and the visual appearance of the ground coffee, which compromises the precision of the equipment and, consequently, the quality of the grind.

[007] In turn, conical blade and disc grinders require a larger investment and connection to the electrical grid, making them less portable. Furthermore, they do not meet the requirements for input / output precision, since the grinding process retains a considerable amount of coffee inside the device.

[008] Nevertheless, conical blade grinders consist of a grinding ring and a grinding cone, comprising teeth and / or collection channels, and are configured to rotate relative to each other around a common axis of rotation. The movement of the grinding ring and cone creates an overflow channel that retains about 10% of the powder, which affects the palatability of subsequent coffee doses.

[009] In short, the market lacks innovation and development of solutions to overcome the limitations of propeller and conical blade grinders, in order to provide greater precision, sensory quality of the beverage and portability. STATE OF THE ART

[010] The document BR 102014001673-2, published on 06 / 09 / 2016, is known in the state of the art. It deals with a grinder used to grind coffee beans, with a first grinding element and a second grinding element, in which the two grinding elements rotate in relation to each other, such that coffee beans Petition 870250068055, dated 04 / 08 / 2025, page 6 / 45 3 / 7 are ground by the grinding elements into a coffee powder, and with a rotating drag wheel with the first grinding element, the drag wheel being used to transport, in its edge region, the ground coffee powder out of the grinding elements through an outlet channel. The edge region of the drag wheel is tapered towards the grinding elements with a concave profile, such that a raised inner edge and a low outer edge are formed, and the drag wheel comprises a plurality of drag vanes distributed in the edge region over the periphery.

[011] Document BR 102015019166-9, published on 02 / 16 / 2016, which deals with a grinder for grinding coffee beans, and which is implemented as a conical grinder. To improve the grinding process, the grinding cones and / or the grinding ring include grinding surfaces, which comprise an angle of inclination, which is, in each case, greater than 90° and less than 180° in relation to a tool reference plane.

[012] Document BR 102015019168-5, published on 02 / 16 / 2016, deals with a grinder for grinding coffee beans, which is implemented as a disc grinder. To improve the grinding process, the first and / or second grinding discs, respectively, include grinding surfaces, which comprise an angle of inclination that is, in each case, greater than 90° and less than 180° in relation to a tool reference plane.

[013] However, both the previous documents BR 102014001673-2 and BR 102015019166-9, as well as BR 102015019168-5, address exactly the drawbacks discussed earlier, as they comprise exactly a mechanism formed by a grinding ring and a grinding cone, comprising teeth and / or collection channels, in addition to being configured to rotate relative to each other, around a common axis of rotation, forming an overflow channel, which retains about 10% of the powder, which substantially affects the palatability of subsequent coffee doses. SOLUTION PROPOSED BY THE INVENTION Petition 870250068055, dated 04 / 08 / 2025, page 7 / 45 4 / 7

[014] The present invention relates to a coffee grinder comprising a portable structure, having a 12V electrical source and / or a battery, allowing independent use without a direct power source. Said 12V motor is coupled to a gear assembly responsible for converting high rotation and low torque into low rotation and high torque. The gear assembly works in conjunction with a movable grinding ring, which moves around a static conical blade mounted on a vertical shaft. For operation, the 12V motor is driven, activating the gear assembly and the movable grinding ring, while the conical blade remains static, so that grinding occurs directly and efficiently, resulting in approximately 98% flow of ground coffee.

[015] Additionally, the present invention allows the adjustment and regulation of the particle size of the ground coffee bean through the vertical movement of the conical blade, which is controlled by an M6 screw and an adjustment knob, enabling the customization of the grind according to the users' preferences. OBJECTIVES OF THE INVENTION

[016] The present patent application for invention was developed with the following objectives:

[017] To provide an efficient and effective coffee grinder, capable of grinding coffee beans directly, preserving the essential oils and aromas for a superior quality beverage;

[018] To provide a coffee grinder with the ability to regulate the particle size of the ground coffee beans, thus allowing the product to be adjusted to consumer preferences and market demands, increasing satisfaction, customer loyalty and potentially sales;

[019] To provide a coffee grinder capable of producing high-quality, customized ground coffee, creating opportunities for product and brand differentiation in the market, increasing the competitiveness and growth potential of companies that use the grinder of the present invention. ADVANTAGES OF THE INVENTION

[020] The present invention has the following advantages: Petition 870250068055, dated 04 / 08 / 2025, page 8 / 45 5 / 7 ✓ The portable and compact design makes transporting and storing the coffee grinder easy, making it suitable for home and commercial use, including food trucks and outdoor events; ✓ The grinding mechanism with gears, a movable grinding ring, and a static conical blade provides efficient and direct grinding of coffee beans, optimizing the grinding process and reducing component wear; ✓ The grind size of the ground coffee beans is adjusted by moving the conical blade vertically in relation to the movable grinding ring, allowing for greater precision, customization, and adaptability to different coffee brewing methods (such as espresso, filtered coffee, French press, etc.); ✓ The grinding mechanism, being modular, facilitates maintenance and replacement of parts, reducing downtime and associated costs; ✓ Powering the coffee grinder with a 12V power source and / or battery allows it to be used in remote locations or places without access to conventional power outlets, increasing the device's versatility and expanding its potential uses; ✓ The coffee grinder results in approximately 98% flow of the ground coffee, substantially reducing flow loss to around 2%, making the process more efficient and less expensive; ✓ It is a mechanism that preserves the essential oils and aromas of ground coffee, ensuring a superior quality beverage, as well as allowing users to enjoy the best taste and aroma of the coffee. DESCRIPTION OF THE DRAWINGS

[021] To aid understanding, the following figures are attached:

[022] Fig. 1: shows a perspective view of the portable coffee grinder;

[023] Fig. 2: shows a partial cutaway view of the mechanism for grinding and adjusting the particle size of coffee beans, incorporated into a portable coffee grinder;

[024] Fig. 3: shows the enlarged lower detail view of the mechanism for grinding and adjusting the particle size of coffee beans, incorporated in a portable coffee grinder;

[025] Fig. 4: shows the enlarged upper detail view of the mechanism for grinding and adjusting the particle size of coffee beans, incorporated in a portable coffee grinder; Petition 870250068055, dated 04 / 08 / 2025, page 9 / 45 6 / 7

[026] Fig. 5: shows a top perspective view of the mechanism for grinding and adjusting the particle size of coffee beans, incorporated in a portable coffee grinder, showing the grinding mechanism in exploded view;

[027] Fig. 6: shows a top perspective view of the mechanism for grinding and adjusting the particle size of coffee beans, incorporated in a portable coffee grinder, showing the exploded view of the grinding mechanism, as well as showing the M6 ​​screw and its set of threads for adjustments;

[028] Fig. 7: shows a bottom perspective view of the mechanism for grinding and adjusting the particle size of coffee beans, incorporated in a portable coffee grinder, showing the grinding mechanism in exploded view. DETAILED DESCRIPTION OF THE INVENTION

[029] The MECHANISM FOR GRINDING AND ADJUSTING THE GRANULOMETRY OF COFFEE BEANS, INCORPORATED IN A PORTABLE COFFEE GRINDER, consists of a grinding mechanism (1) incorporated in a coffee grinder (M) composed of a portable structure (2), which portable structure (2) has a base (3) formed by an open compartment (4) for receiving coffee powder storage containers, and an internal compartment (5), which accommodates a 12v power source and / or a battery (6), which powers a 12v motor (7) controlled by a PWM circuit. Thus, the coffee grinder (M) can be used without the need for a direct power source (110v / 220v outlet). The 12v motor (7) is coupled to a set of gears (8), located on the upper base (9) of the portable structure (2), whereby the 12v motor (7) converts high speed and low torque into low speed and high torque for the set of gears (8).The upper base (9) of the portable structure (2) also has an opening cover (10) fitted with a handle (17).

[030] In due course, the coffee grinder (M), according to the present invention, incorporates a grinding mechanism (1), which grinding mechanism (1) is composed of a set of gears (8), which has in particular a gear (12), which is located and interconnected to a movable grinding ring (13). Said movable grinding ring (13) receives an internal static conical blade (14). The static conical blade (14), in turn, is mounted on a vertical shaft (15), which is connected Petition 870250068055, dated 04 / 08 / 2025, page 10 / 45 7 / 7 to an M6 screw (16), while at its upper end is connected a set of larger threads (16A) for adjustment, which is connected to an adjustment handle (17). Furthermore, the static conical blade (14) is mounted on a hexagonal base (19), being locked by a secondary negative hexagonal base (18), thus keeping the static conical blade (14) in relation to the movable ring (13).

[031] In terms of operation, the coffee beans are introduced into a tapered structure (20) inserted into the inner part of the upper base (9) of the portable structure (2), through the opening lid (10). Then, the coffee beans access the grinding mechanism (1), more precisely, the movable grinding ring (13) and the static conical blade (14). Next, the grinding mechanism (1) is activated by the activation of the 12v motor (7), which provides rotation to the gear assembly (8), which, in turn, transmits simultaneous rotation to the gear (12), which, in turn, simultaneously rotates the movable grinding ring (13) around the static conical blade (14) on the vertical axis (15), thus allowing the grinding of coffee beans directly, resulting in approximately 98% flow of ground coffee, substantially reducing flow loss to approximately 2%, in addition to ensuring the preservation of essential oils and aromas to provide a quality beverage.

[032] Nevertheless, the adjustment of the particle size of the ground coffee bean, in the present invention, is carried out by means of the vertical distance movement of the static conical blade (14) in relation to the movable grinding ring (13). The said vertical distance movement is determined by the set of threads connected to the M6 ​​screw (16) together with the adjustment handle (17), so that, the adjustment handle (17), when manually rotated by the user, moves the conical blade (2) closer to or further away from the movable grinding ring (13), allowing the adjustment of the particle size of the ground coffee bean. Petition 870250068055, dated 04 / 08 / 2025, page 11 / 45

Claims

1 / 2 CLAIMS 1) MECHANISM FOR GRINDING AND ADJUSTING THE GRANULOMETRY OF COFFEE BEANS, INCORPORATED IN A PORTABLE COFFEE GRINDER, consists of a grinding mechanism (1) for a coffee grinder (M), wherein the coffee grinder (M) has a base (3) with an open compartment (4) for receiving containers, and an internal compartment (5) to accommodate a 12v power source and / or a battery (6), which powers a 12v motor (7); also having a set of gears (8), an opening cover (10) and a handle (17), so that the grinding mechanism (1) is characterized by being incorporated into a coffee grinder (M) through a portable structure (2) formed by an upper base (9), which has an internal tapered structure (20);Furthermore, the grinding mechanism (1) is formed by a gear (12) interconnected to the gear assembly (8), wherein the gear (12) is connected to a movable grinding ring (13), which acts in a movable manner around a static conical blade (14) by means of the gear assembly (8); the static conical blade (14) is mounted on a vertical shaft (15), which is connected to an M6 screw (16) and to a thread assembly (16A); furthermore, the thread assembly (16A) is connected to the adjustment handle (17); the static conical blade (14) is mounted on a hexagonal base (19), being locked by a secondary negative hexagonal base (18). 2) A MECHANISM FOR GRINDING AND ADJUSTING THE GRANULOMETRY OF COFFEE BEANS, INCORPORATED IN A PORTABLE COFFEE GRINDER, according to claim 1, is characterized by the gear (12) being connected to the movable grinding ring (13) and rotating said movable grinding ring (13) around the static conical blade (14), which is situated on a vertical axis (15), allowing the grinding of coffee beans directly, obtaining a flow rate of 98% of the ground coffee and a flow loss of 2%. 3) MECHANISM FOR GRINDING AND ADJUSTING THE GRANULOMETRY OF COFFEE BEANS, INCORPORATED IN A PORTABLE COFFEE GRINDER, according to claim 1, is characterized by the adjustment handle (17) being manually rotated to vertically approach or distance the static conical blade (14) from the movable grinding ring (13), wherein the approach or distance of the static conical blade (14) is determined by the M6 ​​screw (16) connected to the thread assembly (16A) and the assembly with the adjustment handle (17).

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