HOPPER FOR A COFFEE GRINDING MACHINE WITH A BOTTOM CLOSING DEVICE FOR SAVING BEANS AND A COFFEE MILL EQUIPPED WITH SUCH A HOPPER Russian patent published in 2023 - IPC A47J42/50 

FIELD: coffee grinding machine.

SUBSTANCE: hopper for a coffee grinding machine is opened with a closing device containing a drive element, a shutter element, a drive plane and a shutter plane, in which the shutter plane is located below the drive plane, in which the shutter device contains a single circular sector fixed relative to the bottom of the hopper, in which a fixed circular sector has a central angle less than 180° and central hole; movable circular sectors hinged in a central opening, in which the movable circular sectors are rotatable between a first position in which the lower opening is open and at least two of the sectors are substantially positioned one above the other in accordance with a single fixed circular sector, and a second position in which the lower opening is closed by a single fixed sector and mobile sectors arranged sequentially around the circumference.

EFFECT: reduction of coffee losses when removing the hopper of the grinding machine.

15 cl, 10 dwg