Abstract: A powder application device (10) for use in a system (100) for producing a three-dimensional workpiece using a generative layering process comprises a spreading member (12). The spreading member (12) is movable across a surface of a carrier (116) for depositing a raw material powder for producing a workpiece by a generative layering method onto the surface of the carrier (116). Furthermore, the powder application device (10) comprises a powder entrainer (16) which is movable across a carrier plane (E) and which, in the region of a surface (20) facing the carrier plane (E), is provided with a surface profile (22). The surface profile (20) comprises an entraining element (24a, 24b, 24c) and a passage channel (26a, 26b, 26c).

Abstract: A powder application device (10) for use in a system (100) for producing a three-dimensional workpiece using a generative layering process comprises a spreading member (12). The spreading member (12) is movable across a surface of a carrier (116) for depositing a raw material powder for producing a workpiece by a generative layering method onto the surface of the carrier (116). Furthermore, the powder application device (10) comprises a powder entrainer (16) which is movable across a carrier plane (E) and which, in the region of a surface (20) facing the carrier plane (E), is provided with a surface profile (22). The surface profile (20) comprises an entraining element (24a, 24b, 24c) and a passage channel (26a, 26b, 26c).

Abstract: An apparatus for producing a three-dimensional work piece is provided. The apparatus comprises a carrier configured to receive multiple layers of raw material powder, an irradiation unit configured to direct a radiation beam to predetermined in sites of an uppermost layer of the raw material powder in order to solidify the raw material powder at the predetermined sites, a process chamber defining a volume through which the radiation beam is directed from the Irradiation unit to the raw material powder, and a support structure provided outside the process chamber and supporting the irradiation unit.

Abstract: An unpacking device for use in an apparatus for producing a three-dimensional work piece by irradiating layers of a raw material powder with electromagnetic or particle radiation, the unpacking device comprises a holding device which is configured to hold a building chamber arrangement. The building chamber arrangement comprises a building chamber accommodating a carrier, wherein the carrier is configured to receive a three-dimensional work piece produced from a raw material powder by an additive layering process. An engagement unit of the unpacking device is configured to engage with the carrier of the building chamber arrangement. A moving mechanism is configured to cause a relative movement between the building chamber and the engagement unit with the carrier engaged therewith so as to allow a separation of the carrier with a three-dimensional work piece received thereon from the building chamber.

Abstract: An unpacking device for use in an apparatus for producing a three-dimensional work piece by irradiating layers of a raw material powder with electromagnetic or particle radiation, the unpacking device comprises a holding device which is configured to hold a building chamber arrangement. The building chamber arrangement comprises a building chamber accommodating a carrier, wherein the carrier is configured to receive a three-dimensional work piece produced from a raw material powder by an additive layering process. An engagement unit of the unpacking device is configured to engage with the carrier of the building chamber arrangement. A moving mechanism is configured to cause a relative movement between the building chamber and the engagement unit with the carrier engaged therewith so as to allow a separation of the carrier with a three-dimensional work piece received thereon from the building chamber.

Abstract: A method for reducing a disturbance in an output signal caused by a disturbing signal in a multiport connector, a multiport connector circuit and a mobile device are described.