Patent ID: 9247850
Filing Date: 2016-02-02
CPC Classification: A47J,B01F

Claim Text:
1. A cooking hob with rotary blade driving means, comprising: a continuous glass or glass ceramic support plate provided with a treatment area; and rotary blade driving means comprising a lower magnetic coupling member rotatably arranged in said treatment area below the support plate and a drive motor operatively connected for rotating said lower magnetic coupling member; the cooking hob including activation/deactivation means for substantially activating and deactivating the magnetic field exerted by the lower magnetic coupling member through the support plate, wherein said activation/deactivation means comprise: position changing means for moving the lower magnetic coupling member between an operative position, in which the lower magnetic coupling member is close enough to the support plate to magnetically transmit torque to an upper magnetic coupling member connected to rotary blades installed in a cooking vessel located on the treatment area of the support plate, and an inoperative position, in which the lower magnetic coupling member is far enough from the support plate so as to be free from transmitting said torque; wherein the support plate is supported on a base structure, and said position changing means comprise: a moving support on which the lower magnetic coupling member, said drive motor, and transmission means for transmitting movement from the drive motor to the lower magnetic coupling member are installed; spindles rotatably supported on the base structure and coupled to corresponding nuts fixed to said moving support; and a position changing motor operatively connected for rotating said spindles, thereby moving said moving support with respect to said base structure.