The presented apparatus relates generally to the ability to interface different devices and attachments to commercially available common-off-the-shelf (COTS) mixer devices. More particularly, the presented exemplary embodiment relates to methods, apparatus, and systems for the enablement of mating third-party products to the COTS mixing devices, utilizing the mixer as the drive source for the mated product. It will also provide for the transference of torque between the mixer and other third-party products.

The presented apparatus relates generally to the ability to interface different devices and attachments to commercially available common-off-the-shelf (COTS) mixer devices. More particularly, the presented exemplary embodiment relates to methods, apparatus, and systems for the enablement of mating third-party products to the COTS mixing devices, utilizing the mixer as the drive source for the mated product. It will also provide for the transference of torque between the mixer and other third-party products.

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 grinding kit includes a grinding unit having a body defining an inner cavity, the body having a receiving end a depositing end. The grinding unit includes a plurality of grinding surfaces disposed within the inner cavity of the body and a drive shaft coupled to the one or more grinding surfaces. The grinding kit includes a first handle configured to removably couple to the drive shaft and configured to rotate about a first axis of rotation while coupled to the drive shaft to drive movement of the plurality of grinding surfaces. The grinding kit includes a second handle configured to removably couple to the drive shaft and configured to rotate about a second axis of rotation while coupled to the drive shaft to drive movement of the plurality of driving surfaces, the second axis of rotation being different from the first axis of rotation

The present disclosure provides a handheld household grinder, which comprises a housing having an accommodating cavity and a grinding rod is arranged in the accommodating cavity of the housing; the upper portion of the grinding rod penetrates through the housing until the grinding rod is partially exposed out of the accommodating cavity; a through hole is formed in the corresponding location of the housing underneath the grinding rod along the length direction, the lower portion of the grinding rod penetrates out of the accommodating cavity via the through hole or resets into the accommodating cavity via the through hole; the external lateral wall, proximal to the lower portion of the grinding rod is provided with a coarse surface, when the grinding rod drives the coarse surface on the external lateral wall of the grinding rod to move into the through hole.

The present disclosure provides a handheld household grinder, which comprises a housing having an accommodating cavity and a grinding rod is arranged in the accommodating cavity of the housing; the upper portion of the grinding rod penetrates through the housing until the grinding rod is partially exposed out of the accommodating cavity; a through hole is formed in the corresponding location of the housing underneath the grinding rod along the length direction, the lower portion of the grinding rod penetrates out of the accommodating cavity via the through hole or resets into the accommodating cavity via the through hole; the external lateral wall, proximal to the lower portion of the grinding rod is provided with a coarse surface, when the grinding rod drives the coarse surface on the external lateral wall of the grinding rod to move into the through hole.

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 coffee mill 1 to which the present invention is applied includes a milling unit 2 which mills, with an inner blade 8, coffee beans 5, a drive shaft 3 in which one end is cooperatively coupled to the inner blade 8 and in which on the shaft center 23 of the other end, a rectangular shaft portion 21 is formed that has a predetermined twist around at least part of the shaft center in a shaft center direction and that is rectangular in cross section and an operating handle 4 to which a rectangle shaft hole 22 that is rectangular in plan view is open and which is coupled to the drive shaft 3 by externally fitting the rectangular shaft hole 22 to the rectangular shaft portion 21.