Patent ID: 9055843
Filing Date: 2015-06-16
Classification: A47J,H01H

Abstract:
1. A hand blender, comprising: an elongate housing comprising a lower housing portion and an upper housing portion, the upper housing portion comprising a handhold and the lower housing portion comprising a tubular portion adjacent the upper housing portion and a processing tool located at a distal end the lower housing portion for mixing or comminuting foodstuffs; an electric motor disposed in the upper housing portion and operatively coupled to the processing tool; a power source disposed in the upper housing portion having a first pole electrically connected to the electric motor and a second pole electrically connected to the electric motor; a controller; a first mechanical switch located on the upper housing portion, the first mechanical switch having a first position and a second position; an electromechanical element disposed in the upper housing portion for detecting the position of the first mechanical switch, wherein the electromechanical element produces an electrical signal that is received by the controller when the first mechanical switch is moved to the second position and wherein the electrical connection between the first pole and the electric motor is interrupted by the controller when the first mechanical switch is in the first position and the electrical connection between the first pole and the electric motor is completed when the first mechanical switch is in the second position; a second mechanical switch located on the upper housing portion, the second mechanical switch having a first position and a second position; an electrical switch disposed in the upper housing portion for detecting the position of the second mechanical switch, wherein the electrical connection between the second pole and the electric motor is interrupted by the electrical switch when the second mechanical switch is in the first position and the electrical connection between the second pole and the electric motor is completed by the electrical switch when the second mechanical switch is in its second position; a mechanical lock provided between the first mechanical switch and the second mechanical switch, wherein the mechanical lock locks the second mechanical switch in its first position as long as the first mechanical switch is not moved to its second position; and wherein the electric motor is only connected to both poles of the power source if both the first mechanical switch and the second mechanical switch are in their second positions and if the first mechanical switch is moved to its second position before the second mechanical switch is moved to its second position.