Coffee grinder, in particular for an automatic coffee machine
First Claim
Patent Images
1. A coffee grinder, comprising:
- two grinding discs that can be rotated in opposite directions, an axial distance between the two grinding discs defining a degree of grinding of coffee powder produced upon grinding of coffee, andan actuator for axially adjusting a first one of the two grinding discs relative to a second one of the two grinding discs, the actuator comprising;
an eccentric shaft that rotates and causes upon rotation, the first grinding disc to be moved axially relative to the second grinding disc to provide different axial distances between the first and second grinding discs, andan electric drive coupled to the eccentric shaft and configured to selectively rotate the eccentric shaft,the actuator being configured to provide a holding torque that prevents rotation of the eccentric shaft to thereby prevent axial movement of the first grinding disc relative to the second grinding disc.
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Accused Products
Abstract
Coffee grinder includes two grinding discs that can be rotated in opposite directions, the axial distance between which defines the degree of grinding of the coffee powder produced. The grinding discs are mounted one over the other within a grinder body, the lower grinding disc being rotatable about a vertical axis of rotation while the upper grinding disc can be adjusted non-rotatably and by an eccentric shaft relative to the lower grinding disc in the direction of the vertical axis of rotation. By rotating the eccentric shaft with a motorized drive, the space between the grinding discs can be changed. This enables almost infinite regulation of the degree of grinding when preparing the coffee.
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20 Claims
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1. A coffee grinder, comprising:
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two grinding discs that can be rotated in opposite directions, an axial distance between the two grinding discs defining a degree of grinding of coffee powder produced upon grinding of coffee, and an actuator for axially adjusting a first one of the two grinding discs relative to a second one of the two grinding discs, the actuator comprising; an eccentric shaft that rotates and causes upon rotation, the first grinding disc to be moved axially relative to the second grinding disc to provide different axial distances between the first and second grinding discs, and an electric drive coupled to the eccentric shaft and configured to selectively rotate the eccentric shaft, the actuator being configured to provide a holding torque that prevents rotation of the eccentric shaft to thereby prevent axial movement of the first grinding disc relative to the second grinding disc. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification