Grinding device (1) for an automatic coffee machine, comprising: a support body (2); a lower grinder (3) and an upper grinder (4) arranged coaxially with respect to an axis (X) and delimiting a gap where the grinding is performed; a motor (21) for driving at least one of said grinders (3,4) in rotation about said axis (X); an adjustment ring nut (6) for adjusting the width of said gap having means for transforming a rotation thereof about said axis (X) into a translation of at least one of said grinders in the direction of said axis (X); and a gear for driving said ring nut (6) in rotation; where said gear comprises a toothed wheel arc (7) engaging a pinion (8), and a mechanism for fixing said toothed wheel arc (7) in an adjustable position on said ring nut (6).

Grinding device (1) for an automatic coffee machine, comprising: a support body (2); a lower grinder (3) and an upper grinder (4) arranged coaxially with respect to an axis (X) and delimiting a gap where the grinding is performed; a motor (21) for driving at least one of said grinders (3,4) in rotation about said axis (X); an adjustment ring nut (6) for adjusting the width of said gap having means for transforming a rotation thereof about said axis (X) into a translation of at least one of said grinders in the direction of said axis (X); and a gear for driving said ring nut (6) in rotation; where said gear comprises a toothed wheel arc (7) engaging a pinion (8), and a mechanism for fixing said toothed wheel arc (7) in an adjustable position on said ring nut (6).

A portable manual grinder has a driving section, a grinding section and a discharging section coaxially connected from top to bottom. The driving section has a drive shaft that drives a central axis of the grinding section. The drive shaft is connected to a gear set that increases the gear ratio to facilitate manual grinding. The grinding section comprises an upper grinding section and a lower grinding section that are coaxially disposed and mated together. The upper and lower grinding portions include corresponding blades extending therefrom. The bottom section of the lower grinding section has one or more holes in communication with the discharge section. The driving section and the upper grinding section are magnetically attracted and connected to each other and the upper grinding section and the lower grinding section are magnetically attracted and connected to each other.

A portable manual grinder has a driving section, a grinding section and a discharging section coaxially connected from top to bottom. The driving section has a drive shaft that drives a central axis of the grinding section. The drive shaft is connected to a gear set that increases the gear ratio to facilitate manual grinding. The grinding section comprises an upper grinding section and a lower grinding section that are coaxially disposed and mated together. The upper and lower grinding portions include corresponding blades extending therefrom. The bottom section of the lower grinding section has one or more holes in communication with the discharge section. The driving section and the upper grinding section are magnetically attracted and connected to each other and the upper grinding section and the lower grinding section are magnetically attracted and connected to each other.

A grinder includes a first tube having a first open end and a first floor with an annular recess at a perimeter thereof. First blades are coupled to the first floor and a first ring is disposed in the annular recess. A second tube has a second open end and a second floor. The second tube is configured for partial axial insertion in the first tube. Second blades are coupled to the second floor. When the second tube is inserted into the first tube, portions of the first blades are in a non-contact meshed engagement with portions of the second blades that supports relative rotation between the first and second tubes. A second ring disposed about the second tube is axially spaced from the first ring when the second tube is inserted into the first tube. The first and second rings comprise materials that are magnetically attracted to one another.

A grinder includes a first tube having a first open end and a first floor with an annular recess at a perimeter thereof. First blades are coupled to the first floor and a first ring is disposed in the annular recess. A second tube has a second open end and a second floor. The second tube is configured for partial axial insertion in the first tube. Second blades are coupled to the second floor. When the second tube is inserted into the first tube, portions of the first blades are in a non-contact meshed engagement with portions of the second blades that supports relative rotation between the first and second tubes. A second ring disposed about the second tube is axially spaced from the first ring when the second tube is inserted into the first tube. The first and second rings comprise materials that are magnetically attracted to one another.

It it described a roasted coffee bean grinder device comprising a grinding chamber (2), a pair of grinders, one on top of the other, housed within said grinding chamber, one of said grinders being rotatable relative to the other which is kept stationary, a support for at least said rotatable grinder, a drive member (4), connected to said support for rotating said rotatable grinder, an electronic control and command unit (16).

The grinding chamber (2), containing said grinders, has a first opening (5a) for introducing the roasted coffee beans to be ground between the grinders and a second opening for discharging the ground product.

The device includes an apparatus for moistening the beans of the product to be ground, which is adapted to feed a predetermined amount of wetting substance, particularly water, to the roasted coffee beans to be ground, to prevent the formation of electrostatic charges in the ground product and reduce the weight loss in ground coffee with respect to the predetermined weight dose of the beans to be ground. The added dose of wetting substance is determined as a function of the amount of beans to be ground.

It it described a roasted coffee bean grinder device comprising a grinding chamber (2), a pair of grinders, one on top of the other, housed within said grinding chamber, one of said grinders being rotatable relative to the other which is kept stationary, a support for at least said rotatable grinder, a drive member (4), connected to said support for rotating said rotatable grinder, an electronic control and command unit (16).

The grinding chamber (2), containing said grinders, has a first opening (5a) for introducing the roasted coffee beans to be ground between the grinders and a second opening for discharging the ground product.

The device includes an apparatus for moistening the beans of the product to be ground, which is adapted to feed a predetermined amount of wetting substance, particularly water, to the roasted coffee beans to be ground, to prevent the formation of electrostatic charges in the ground product and reduce the weight loss in ground coffee with respect to the predetermined weight dose of the beans to be ground. The added dose of wetting substance is determined as a function of the amount of beans to be ground.

A electronic grinder includes a main body removably attached to a grinding and dispensing chamber. The top of the main body is sealed by an upper cab and the bottom of the chamber is sealed by an openable lower cap. The main chamber includes a motor connected to a magnetically attached removable blade. The blade extends into the chamber when the grinder is assembled. When the lower cap is closed, the blade grinds material placed in the chamber. When the lower cap is opened, the blade functions as a fan to dispense ground material out of the chamber. The grinder also includes a display, an electronic scale, and an accessory cigarette lighter.

A grinder includes a connecting part configured to be attached to a rotating shaft to which a handle of a hand mill configured to grind food by hand is mounted; and a motor configured to rotate the connecting part and abut on the connecting part.