Abstract: A virtual reality system, including one or more modular walls configured to define an interior area, at least one modular wall having a monochromatic interior surface, a camera positioned within the interior area, the camera configured to capture an image of a player with the monochromatic interior surface as a background, one or more processors configured to generate a virtual scene, to receive the image of the player, and to generate a composite image including at least a portion of the image of the player composited into the virtual scene, and a display configured to receive and display the composite image. The one or more modular walls may define a number of interior areas for multiple players.

Abstract: The invention is based on a hammer drill and/or chisel hammer, having an impact mechanism unit, an impact mechanism housing and at least one damping unit. The invention proposes that the damping unit is arranged on the impact mechanism housing along a main extension direction of the impact mechanism unit.

Abstract: The invention is based on a hammer drill and/or chisel hammer, having an impact mechanism unit, an impact mechanism housing and at least one damping unit. The invention proposes that the damping unit is arranged on the impact mechanism housing along a main extension direction of the impact mechanism unit.

Abstract: In a sensor device in electric power tools and/or electrical appliances which have a mains-operated electric drive motor in a housing, a sensor device is provided, which monitors a properly closed state of the housing and upon a deviation from the properly closed state switches the drive motor to be voltage-free.

Abstract: A hand power tool has a tool holder, and a blocking device for the tool holder, the blocking device being connectable with the tool holder and provided with a key unlockable blocking body which secured the blocking device from undesired withdrawal. When the blocking body is connected with the tool holder it blocks the tool holder from insertion of a tool.

Abstract: A drilling tool and, in particular, a rock drill for the creation of breaches in concrete or masonry for the use of drill hammers is proposed, which is configured as a cross drill bit having four cutting fins. In order to optimize drilling capacity, the drilling tool is provided with a cross drilling head which merges in one piece into a conveyor spiral matched to the drill head. A purpose-specific cutting element facing serves to optimize the drilling capacity.