Patents by Inventor Andreas Wiesner

Andreas Wiesner has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9878497
    Abstract: A method for controlling an irradiation system (20) for use in an apparatus (10) for producing a three-dimensional work piece and comprising a plurality of irradiation units (22a, 22b) a first and a second irradiation area (18a, 18b) as well as an overlap area (26) arranged between the first and the second irradiation area (18a, 18b) is defined on a surface of a carrier (16) adapted to receive a layer of raw material powder. A first irradiation area (22a) of the irradiation system (20) is assigned to the first irradiation area (18a) and the overlap area (26), and a second irradiation unit (22b) of the irradiation system (20) is assigned to the second irradiation area (18b) and the overlap area (26).
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: January 30, 2018
    Assignee: SLM Solutions Group AG
    Inventors: Dieter Schwarze, Andreas Wiesner
  • Publication number: 20170136543
    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.
    Type: Application
    Filed: November 13, 2016
    Publication date: May 18, 2017
    Inventors: André Hermann, Toni Adam Krol, Andreas Wiesner, Jan Wilkes, Bodo Haack, Karsten Huebinger, Peter Koerner, Simon Mueller, Kaj Merten Berggreen, Jonas Mersch
  • Publication number: 20170021572
    Abstract: In a method for controlling an irradiation system for use in an apparatus for producing a three-dimensional work piece, a first and a second irradiation area as well as an overlap area arranged between the first and the second irradiation area are defined on a surface of a carrier adapted to receive layers of a raw material powder to be irradiated with electromagnetic or particle radiation emitted by the irradiation system. A first irradiation unit of the irradiation system is assigned to the first irradiation area and the overlap area, and a second irradiation unit of the irradiation system is assigned to the second irradiation area and the overlap area. At least one of the first irradiation area, the second irradiation area and the overlap area is defined in dependence on a geometry of the three-dimensional work piece to be produced.
    Type: Application
    Filed: July 20, 2016
    Publication date: January 26, 2017
    Inventors: Andreas Wiesner, Dieter Schwarze
  • Patent number: 9527246
    Abstract: An optical irradiation device is provided which includes a multimode optical fiber suitable for the central wavelength of a beam of light having a first beam profile which enters through an input connection for multimode guidance; a switching device, which can be switched between a first and second light conducting state and is configured to conduct the beam of light entering through the input connection in the first light conducting state to an output connection, such that the beam of light has the first beam profile on emerging from the output connection, and guides the beam of light entering the input connection to the output connection by the multimode optical fiber in the second light conducting state, so that the beam of light has a second beam profile different from the first beam profile on emerging from the output connection by the multimode guidance in the multimode optical fiber.
    Type: Grant
    Filed: November 26, 2012
    Date of Patent: December 27, 2016
    Assignee: SLM Solutions GmbH
    Inventors: Andreas Wiesner, Dieter Schwarze, Henner Schoeneborn
  • Publication number: 20160263704
    Abstract: A method for producing a three-dimensional work piece comprises the steps of applying a raw material powder onto a carrier (16), and selectively irradiating electromagnetic or particle radiation onto the raw material powder applied onto the carrier (16) by means of an irradiation unit (18) in order to produce the work piece from said raw material powder on the carrier (16) by a generative layer construction method, wherein the irradiation unit (18) comprises a radiation source (24) and a plurality of optical elements (30, 32, 34, 35). Operation of the irradiation unit (18) is controlled in dependence on an operating temperature dependent change of at least one optical property of at least one optical element (30, 32, 34, 35) of the irradiation unit (18).
    Type: Application
    Filed: March 11, 2016
    Publication date: September 15, 2016
    Inventors: Dieter Schwarze, Andreas Wiesner, Toni Adam Krol
  • Publication number: 20160144431
    Abstract: A powder circuit (36) for use in an apparatus (10) for producing three-dimensional work pieces by irradiating layers of a raw material powder with electromagnetic or particle radiation comprises a process chamber (12) accommodating a carrier (16) and a powder application device (14) for applying a raw material powder onto the carrier (16), the process chamber (12) being provided with a powder inlet (30) for supplying raw material powder to the powder application device (14) and a powder outlet (32) for discharging excess raw material powder from the process chamber (12). The powder circuit (36) further comprises a powder circulation line (34) connecting the powder outlet (32) of the process chamber (12) to the powder inlet (30) of the process chamber (12) and a conveying device (38) arranged in the powder circulation line (34) for conveying the raw material powder through the powder circulation line (34).
    Type: Application
    Filed: November 23, 2015
    Publication date: May 26, 2016
    Inventors: Andreas Wiesner, Bodo Haack, Dieter Schwarze
  • Publication number: 20160059310
    Abstract: An apparatus (10) for producing three-dimensional work pieces comprises a process chamber (12) accommodating a carrier (16) and a powder application device (14) for applying a raw material powder onto the carrier (16) and being provided with a gas inlet (30) and a gas outlet (32). The apparatus (10) further comprises an irradiation device (18) for selectively irradiating electromagnetic or particle radiation onto the raw material powder applied onto the carrier (16) in order to produce a work piece made of said raw material powder by an additive layer construction method. A gas circuit (34) of the apparatus (10) comprises a circulation line (36) connecting the gas outlet (32) of the process chamber (12) to the gas inlet (30) of the process chamber (12) and a filter system (40) arranged in the circulation line (36). Furthermore, a cyclone separator system (42) is arranged in the circulation line (36) upstream of the filter system (40).
    Type: Application
    Filed: September 1, 2015
    Publication date: March 3, 2016
    Inventors: Frank Junker, Stefan Poertner, Dieter Schwarze, Andreas Wiesner
  • Publication number: 20160059309
    Abstract: An apparatus (10) for producing three-dimensional work pieces comprises a process chamber (12) accommodating a carrier (16) and a powder application device (14) for applying a raw material powder onto the carrier (16). The apparatus (10) further is equipped with an irradiation device (18) for selectively irradiating electromagnetic or particle radiation onto the raw material powder applied onto the carrier (16) in order to produce a work piece made of said raw material powder by an additive layer construction method. A gas circuit (34) comprises a circulation line (36) adapted to supply gas to the process chamber (12) and to discharge gas loaded with particulate impurities from the process chamber (12), and a raw material powder circuit (42) comprises a circulation line (44) adapted to supply raw material powder to the process chamber (12) and to discharge excess raw material powder from the process chamber (12).
    Type: Application
    Filed: September 1, 2015
    Publication date: March 3, 2016
    Inventors: Frank Junker, Stefan Poertner, Dieter Schwarze, Andreas Wiesner
  • Patent number: 9221100
    Abstract: The present disclosure relates to an optical irradiation unit for a plant for producing workpieces by irradiating powder layers of a raw material powder with laser radiation, comprising optical components for guiding and focussing a beam path of a first laser beam, and an optical splitting and coupling unit for splitting the first laser beam into at least two laser sub-beams and/or for coupling a second laser beam with a wavelength differing from the wavelength of the first laser beam into the beam path of the first laser beam. The disclosure also relates to a plant for producing workpieces by irradiating powder layers of a raw material powder with laser radiation, and to an associated method.
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: December 29, 2015
    Assignee: SLM Solutions GmbH
    Inventors: Dieter Schwarze, Henner Schoeneborn, Andreas Wiesner
  • Publication number: 20150174827
    Abstract: A method for controlling an irradiation system (20) for use in an apparatus (10) for producing a three-dimensional work piece and comprising a plurality of irradiation units (22a, 22b) a first and a second irradiation area (18a, 18b) as well as an overlap area (26) arranged between the first and the second irradiation area (18a, 18b) is defined on a surface of a carrier (16) adapted to receive a layer of raw material powder. A first irradiation area (22a) of the irradiation system (20) is assigned to the first irradiation area (18a) and the overlap area (26), and a second irradiation unit (22b) of the irradiation system (20) is assigned to the second irradiation area (18b) and the overlap area (26).
    Type: Application
    Filed: November 21, 2014
    Publication date: June 25, 2015
    Inventors: Dieter Schwarze, Andreas Wiesner
  • Publication number: 20150174823
    Abstract: Method and apparatus for producing a large three-dimensional work piece. In a method for producing a three-dimensional work piece, a layer of raw material powder is applied onto a carrier (16) accommodated within a process chamber (12) by means of a powder application device (14), wherein a plurality of irradiation areas (18a, 18b, 18c, 18d) is defined on a surface of the carrier (16). Electromagnetic or particle radiation is selectively irradiated onto the raw material powder applied onto the carrier (16) by means of an irradiation system (20), the irradiation system (20) comprising a plurality of irradiation units (22), each irradiation unit (22) being associated with one of the irradiation areas (18a, 18b, 18c, 18d) defined on the surface of the carrier (16) and being configured to selectively irradiate electromagnetic or particle radiation onto the raw material powder applied onto the associated irradiation area (18a, 18b, 18c, 18d).
    Type: Application
    Filed: October 15, 2014
    Publication date: June 25, 2015
    Inventors: Andreas Wiesner, Henner Schoeneborn, Dieter Schwarze
  • Publication number: 20140301883
    Abstract: A method for producing three-dimensional work pieces comprises the steps of supplying gas to a process chamber accommodating a carrier and a powder application device, applying a layer of raw material powder onto the carrier by means of the powder application device, selectively irradiating electromagnetic or particle radiation onto the raw material powder applied onto the carrier by means of an irradiation device, discharging gas containing particulate impurities from the process chamber, and controlling the operation of the irradiation device by means of a control unit such that a radiation beam emitted by at least one radiation source of the irradiation device is guided over the layer of raw material powder applied onto the carrier according to a radiation pattern containing a plurality of scan vectors.
    Type: Application
    Filed: April 1, 2014
    Publication date: October 9, 2014
    Applicant: SLM SOLUTIONS GMBH
    Inventors: Andreas WIESNER, Dieter SCHWARZE
  • Patent number: 8537586
    Abstract: A memory arrangement comprises a first memory transistor (11) for non-volatile storage of a first bit, a second memory transistor (17) for non-volatile storage of the first bit in inverted form, and a word line (29) that is connected to a control terminal (12) of the first memory transistor (11) and a control terminal (18) of the second memory transistor (17). The memory arrangement further comprises a read amplifier (23) with a first input (24) that is coupled to the first memory transistor (11) for supplying a first bit line signal (BL1), a second input (25) that is coupled to the second memory transistor (17) for supplying a second bit line signal (BL2), and an output (26) for provision of an output signal (SOUT) as a function of the first bit line signal (BL1) and the second bit line signal (BL2).
    Type: Grant
    Filed: July 2, 2008
    Date of Patent: September 17, 2013
    Assignee: AMS AG
    Inventors: Gregor Schatzberger, Andreas Wiesner
  • Publication number: 20130064706
    Abstract: The present invention relates to an optical irradiation unit (10) for a plant (100) for producing workpieces by irradiating powder layers of a raw material powder with laser radiation, comprising optical components (40, 50, 60, 70) for guiding and focussing a beam path of a first laser beam (200), and an optical splitting and coupling unit (62, 64, 66) for splitting the first laser beam (200) into at least two laser sub-beams and/or for coupling a second laser beam (300) with a wavelength differing from the wavelength of the first laser beam (200) into the beam path of the first laser beam (200). The invention also relates to a plant (100) for producing work-pieces by irradiating powder layers of a raw material powder with laser radiation, and to an associated method.
    Type: Application
    Filed: December 3, 2010
    Publication date: March 14, 2013
    Applicant: SLM SOLUTIONS GMBH
    Inventors: Dieter Schwarze, Henner Schoeneborn, Andreas Wiesner
  • Patent number: 8325538
    Abstract: In one embodiment, a circuit arrangement with a column latch has a first terminal (A1) for connection to a bit line (BL) of a nonvolatile memory, a second terminal (A2) connected via a first switchable path (P1) to a reference-potential terminal (VSS) and via a second switchable path (P2) to a supply-potential terminal (VPP), and the column latch (100, 110), which is coupled to the second terminal (A2) and is adopted for storing a potential at the second terminal (A2). The first terminal (A1) is coupled to the second terminal (A2) via a first switchable connection (L1) and via a second switchable connection (L2). A method for operating a column latch is additionally disclosed.
    Type: Grant
    Filed: September 16, 2010
    Date of Patent: December 4, 2012
    Assignee: Austriamicrosystems AG
    Inventors: Gregor Schatzberger, Andreas Wiesner
  • Patent number: 8022749
    Abstract: The circuit arrangement for the supply of voltage comprises a control arrangement (2), a charge pump (14), a comparator (25) and a ramp signal generator (30). A power supply voltage (Vdd) can be fed to the input of the charge pump (14). The input of the charge pump (14) is coupled to a first output (5) of the control arrangement (2), and comprises an output (17) for the supply of an output voltage (VHv). A first input (26) of the comparator (25) is coupled to the output (17) of the charge pump (14), while the output is coupled to a first input (3) of the control arrangement (2) in order to supply a comparator signal (Vc). The input of the ramp signal generator (30) is connected to a second output (6) of the control arrangement (2), while its output is connected to a second input (27) of the comparator (25) in order to deliver a reference output voltage (Vref_out).
    Type: Grant
    Filed: January 18, 2007
    Date of Patent: September 20, 2011
    Assignee: austriamicrosystems AG
    Inventors: Gregor Schatzberger, Andreas Wiesner
  • Publication number: 20110063921
    Abstract: In one embodiment, a circuit arrangement with a column latch has a first terminal (A1) for connection to a bit line (BL) of a nonvolatile memory, a second terminal (A2) connected via a first switchable path (P1) to a reference-potential terminal (VSS) and via a second switchable path (P2) to a supply-potential terminal (VPP), and the column latch (100, 110), which is coupled to the second terminal (A2) and is adopted for storing a potential at the second terminal (A2). The first terminal (A1) is coupled to the second terminal (A2) via a first switchable connection (L1) and via a second switchable connection (L2). A method for operating a column latch is additionally disclosed.
    Type: Application
    Filed: September 16, 2010
    Publication date: March 17, 2011
    Applicant: austriamicrosystems AG
    Inventors: Gregor SCHATZBERGER, Andreas Wiesner
  • Publication number: 20110050325
    Abstract: The circuit arrangement for the supply of voltage comprises a control arrangement (2), a charge pump (14), a comparator (25) and a ramp signal generator (30). A power supply voltage (Vdd) can be fed to the input of the charge pump (14). The input of the charge pump (14) is coupled to a first output (5) of the control arrangement (2), and comprises an output (17) for the supply of an output voltage (VHv). A first input (26) of the comparator (25) is coupled to the output (17) of the charge pump (14), while the output is coupled to a first input (3) of the control arrangement (2) in order to supply a comparator signal (Vc). The input of the ramp signal generator (30) is connected to a second output (6) of the control arrangement (2), while its output is connected to a second input (27) of the comparator (25) in order to deliver a reference output voltage (Vref_out).
    Type: Application
    Filed: January 18, 2007
    Publication date: March 3, 2011
    Inventors: Gregor Schatzberger, Andreas Wiesner