20110280099 | MIXER - A mixer including a rotatable mixing container including a container drive, a mixing head attached in the mixing container, a rotatably mounted mixing tool, and a tool drive to drive the mixing tool. The mixing tool includes a shaft and a frame arranged concentrically around the shaft. The shaft and the frame are interconnected by at least two circulating elements. The at least one shear pin is arranged on the frame and is configured to be guided during an operation by at least one shear groove disposed in the mixing head. | 11-17-2011 |