An apparatus for grinding coffee is described. The apparatus includes a mechanical user input device, a grinding unit for grinding coffee, an electrical switch which connects the grinding unit to a source of electrical power and a mechanical coupling for the mechanical coupling of the user input device to the grinding unit. The user input device provides electrical power to the grinding unit when it is displaced from an initial position and ceases the provision of electrical power to the grinding unit when it is in the initial position. The mechanical coupling returns the user input device to the initial position when the grinding unit is operational.

An apparatus for grinding coffee is described. The apparatus includes a mechanical user input device, a grinding unit for grinding coffee, an electrical switch which connects the grinding unit to a source of electrical power and a mechanical coupling for the mechanical coupling of the user input device to the grinding unit. The user input device provides electrical power to the grinding unit when it is displaced from an initial position and ceases the provision of electrical power to the grinding unit when it is in the initial position. The mechanical coupling returns the user input device to the initial position when the grinding unit is operational.

An apparatus for dosing coffee beans for the purpose of selecting a metered quantity to be ground comprises a portioning device with a metering chamber having a receiving volume for receiving the coffee beans. The receiving volume is variable. Preferably, the setting of the metered quantity is performed mechanically, wherein the effect of the settings on the portioning device takes place mechanically. Preferably, the apparatus comprises a setting ring for manually adjustment of the metered quantity

An apparatus for dosing coffee beans for the purpose of selecting a metered quantity to be ground comprises a portioning device with a metering chamber having a receiving volume for receiving the coffee beans. The receiving volume is variable. Preferably, the setting of the metered quantity is performed mechanically, wherein the effect of the settings on the portioning device takes place mechanically. Preferably, the apparatus comprises a setting ring for manually adjustment of the metered quantity

A grinder adapted to grind plant material having and handle and three cylindrical receptacles, each receptacle comprising teeth, plant material ground when the handle is rotated axially, the teeth interconnected through, inter alia, a shaft and gears to the handle.

An electric pepper grinder, wherein, on the one hand, a control switch is provided to avoid starting the grinder by mistake when the gravity switch is turned off inadvertently; on the other hand, the storage bin is formed on the shell non-detachably, and it is just necessary to open the bin cover during loading; further, the storage bin is located in the three-segment structure between the grinding and power mechanisms, realizing evener loading.

An electric pepper grinder, wherein, on the one hand, a control switch is provided to avoid starting the grinder by mistake when the gravity switch is turned off inadvertently; on the other hand, the storage bin is formed on the shell non-detachably, and it is just necessary to open the bin cover during loading; further, the storage bin is located in the three-segment structure between the grinding and power mechanisms, realizing evener loading.

An automatic grinder and a grinding method thereof. The grinder includes a control structure and at least one material container assembly. The control structure includes a driving assembly and a connecting structure connected thereto. The material container assembly includes a material container body (20), a grinding head (22) fixedly connected to the material container body (20), and a grinding sleeve (25) rotatably connected to the grinding head (22). A recess (201) is provided on the material container body (20), engaged with the connecting structure. The grinding head (22) is fitted into the grinding sleeve (25), defining therebetween a material compartment (40) for accommodating a material. The driving assembly drives the material container body (20) to rotate. The material container body (20) drives the grinding head (22) to rotate. The grinding head (22) moves relative to the grinding sleeve (25), such that the material therebetween is ground into powder.

An automatic grinder and a grinding method thereof. The grinder includes a control structure and at least one material container assembly. The control structure includes a driving assembly and a connecting structure connected thereto. The material container assembly includes a material container body (20), a grinding head (22) fixedly connected to the material container body (20), and a grinding sleeve (25) rotatably connected to the grinding head (22). A recess (201) is provided on the material container body (20), engaged with the connecting structure. The grinding head (22) is fitted into the grinding sleeve (25), defining therebetween a material compartment (40) for accommodating a material. The driving assembly drives the material container body (20) to rotate. The material container body (20) drives the grinding head (22) to rotate. The grinding head (22) moves relative to the grinding sleeve (25), such that the material therebetween is ground into powder.

Grinder-doser device for coffee beans includes a body which internally houses an electric motor, having a shaft, which is integral in rotation with the lower grinder holder to which the lower grinder is joined, said lower grinder holder, and said lower grinder being housed inside a head which has a horizontal annular seat in the lateral edge, which houses an upper grinder. The upper grinder being formed by a toothed annular portion housed inside a hollow annular portion, which in turn is surrounded by an annular portion, which rests on the annular seat. The flat upper surface of the upper grinder is rectified and collimated with the plane passing through the ends of the teeth of the toothed portion.