Abstract: A processing tool for mixing or comminuting food materials includes a working shaft having an input end and an output end, a shaft housing which carries the input end and is adapted for coupling to a drive motor of a kitchen appliance, a flared bell-shaped housing attached to the shaft housing and positioned near the output end of the working shaft, and a bearing sleeve which carries the output end of the working shaft. A cover plate separates an inner space defined by the bell-shaped housing from an inner space defined by the shaft housing. The cover plate has a bore through which the output end of the shaft extends outwardly. A work performing element is secured to the output end of the shaft. A seal structure includes an elastic sealing part supported by the shaft housing and a circumferential sealing ring formed integrally with the elastic sealing part.

Abstract: The present invention comprises a rotating blade, in particular for the comminution of food materials, which is adapted to be attached to an operating shaft and which includes at least two blade supporting arms which extend radially from a mid-portion. The blade supporting arms each have a knife-edge with cutting edges on a free edge in the direction of rotation. According to the present invention, the knife-edge of the one supporting arm is directed upwardly and the knife-edge of the other supporting arm is directed downwardly, and in the area of the knife-edges the legs are profiled such that a portion projecting from the surface of the supporting arms is formed. The projecting portion is limited by the knife-edge on the one side and by a chamfered surface extending outwardly to the cutting edge on the other side. The knife-edge and the chamfered surface enclose a chamfer angle.

Abstract: In an electrically operated hand mixer (10) including an attachment (1), the latter is provided with a bowl (2) closable by a lid (9). The hand mixer has at least two first (90) and second (77) drive shafts adapted for detachable coupling with various processing tools (76), such as whisk attachments or kneading blades. One of the drive shafts (90) can be non-rotatably coupled with an output shaft (16), extending upwardly through the lid (9), when the hand mixer (10) is placed on the lid (9) of the attachment (1). The output shaft (16) is connected with a drivable blade (21, 22) in the interior of the bowl (2) for chopping foods. The non-rotatable connection is established by engagement of a first toothing (71) provided in the drive shaft (90) and a mating second toothing (70) provided on the output shaft (16).