A coffee grinder having a grinding tool (20) for grinding coffee beans, a motor (30) for driving the grinding tool (20), a stall detector (41) for detecting a stall condition of the grinding tool (20) and/or of the motor (30), and a reversal unit (40) configured to temporarily reverse a direction of rotation (28,28) of the grinding tool (20) and/or of the motor (30) if the stall detector (41) detects a stall condition. Further, a corresponding coffee grinding method and a coffee machine having a coffee grinder are presented.

A coffee grinder having a grinding tool (20) for grinding coffee beans, a motor (30) for driving the grinding tool (20), a stall detector (41) for detecting a stall condition of the grinding tool (20) and/or of the motor (30), and a reversal unit (40) configured to temporarily reverse a direction of rotation (28,28) of the grinding tool (20) and/or of the motor (30) if the stall detector (41) detects a stall condition. Further, a corresponding coffee grinding method and a coffee machine having a coffee grinder are presented.

A bean grinding apparatus including a body; grinding burrs mounted in the body, the burrs including a non-driven burr and a rotationally driven burr, the rotationally driven burr having a rotational axis about which it rotates; a drive motor operatively coupled to the rotationally driven burr; a grounds flow path defined within the body; and an exit spout, the exit spout having an inlet in communication with the grounds flow path and an outlet, wherein the exit spout defines a longitudinal axis and the longitudinal axis of the exit spout is angled with respect to the rotational axis of the driven burr.

A bean grinding apparatus including a body; grinding burrs mounted in the body, the burrs including a non-driven burr and a rotationally driven burr, the rotationally driven burr having a rotational axis about which it rotates; a drive motor operatively coupled to the rotationally driven burr; a grounds flow path defined within the body; and an exit spout, the exit spout having an inlet in communication with the grounds flow path and an outlet, wherein the exit spout defines a longitudinal axis and the longitudinal axis of the exit spout is angled with respect to the rotational axis of the driven burr.

A conical burr coffee grinder can include a hopper that receives coffee beans, a grinding arrangement beneath the hopper, and a removable container beneath the grinding arrangement. The grinding arrangement can include an inner conical burr within an outer conical burr. At least one conical burr can rotate with respect to the other to grind the coffee beans into coffee grounds and dispense the coffee grounds into the container. The coffee beans and coffee grounds can follow a substantially vertical path from the hopper through the grinding arrangement and into the container, which can be multipurpose. A rotor gear can be coupled to the inner conical burr such that the rotor gear and inner conical burr rotate together as a combined unit. Additional components can include a rotational motor, a geartrain, a removable hopper lid, a grind adjustment assembly, a chute, an ionizer, a base, and a safety switch.

A conical burr coffee grinder can include a hopper that receives coffee beans, a grinding arrangement beneath the hopper, and a removable container beneath the grinding arrangement. The grinding arrangement can include an inner conical burr within an outer conical burr. At least one conical burr can rotate with respect to the other to grind the coffee beans into coffee grounds and dispense the coffee grounds into the container. The coffee beans and coffee grounds can follow a substantially vertical path from the hopper through the grinding arrangement and into the container, which can be multipurpose. A rotor gear can be coupled to the inner conical burr such that the rotor gear and inner conical burr rotate together as a combined unit. Additional components can include a rotational motor, a geartrain, a removable hopper lid, a grind adjustment assembly, a chute, an ionizer, a base, and a safety switch.

Herbs are commonly used and consumed in ground form. Depending on, for example, the size, shape, and type of herb or the desired application, the appropriate form of the ground herb may vary. An herb grinder with an adjustment plate for grinding an herb to multiple ground forms is described herein. Such a disclosure is advantageous over traditional herb grinders at least in that it reduces unnecessary clutter and operational inefficiencies by having one herb grinder configured to grind an herb into multiple forms.

A mill includes a first mill having a first grinding region, a second mill having a second grinding region opposed to the first grinding region and provided to be rotatable relatively to the first mill, and a heat radiation mechanism which is provided in at least one of the first mill and the second mill and radiates friction heat generated as a result of rotation of the first mill and the second mill relative to each other, and the heat radiation mechanism is provided in a portion except for the first grinding region and the second grinding region.