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US 9,066,629 B1Granted
Numerically controlled espresso grinder
OwnerRobert Melvininventor
Life of this patent
Estimating the term…
Abstract
A coffee grinder using a stepper or servo motor in which the amount of ground coffee output is correlated to degrees or increments of burr rotation. By controlling burr rotation a precise amount of coffee is delivered eliminating excess coffee from being ground.
Claims14
A method of grinding coffee comprising the steps of:
- providing a motor capable of being controlled in increments of rotation;
- providing a drive shaft attached to said motor;
- providing an inner burr attached to said drive shaft;
- providing a housing;
- providing an outer burr attachable to said housing;
- providing an output nozzle attachable to said housing;
- operating said motor for a period of time;
- determining an amount of burr rotation during said step of operating;
- measuring a quantity of coffee produced during said step of operating;
- calculating an amount of burr rotation necessary to produce a predetermined quantity of ground coffee;
- controlling said motor, using a result from said step of calculating, to operate for an amount of burr rotation such that a predetermined amount of ground coffee is produced.
8 more elements
Dependencies are inferred from the claim text.