Patents by Inventor Ralf Wehning

Ralf Wehning 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: 9067360
    Abstract: The invention relates to a process for producing products having a specific geometry, in particular dental prostheses or auxiliary dental parts, comprising the steps of producing a plurality of products on the surface of a substrate plate by selective curing, in particular by selective sintering or melting, wherein the material is applied in successive layers, one or a plurality of predetermined regions are selectively cured by means of high-energy radiation and joined to one or a plurality of regions of the subjacent layer after each application of a layer, wherein the predetermined regions are predetermined according to a cross-sectional geometry of the product in the respective layer.
    Type: Grant
    Filed: August 25, 2010
    Date of Patent: June 30, 2015
    Assignee: BEGO MEDICAL GMBH
    Inventors: Ralf Wehning, Carsten Vagt, Ingo Uckelmann, Sascha Gartner
  • Patent number: 8926879
    Abstract: The invention relates to a method for manufacturing a product in layers, said method comprising the following steps: (a) applying a layer of a curable material, (b) selectively curing predetermined zones of the applied layer on the basis of geometrical data of the product, (c) repeating steps (a) and (b) until the geometry of the product has been created in the form of cured material and (d) removing the uncured material. According to the invention, a finish allowance, for example one with a wedge-shaped cross-section, is applied in steps (a) and (b), in one, two or more product sections in which an angle (?) between an axis perpendicular to the layers and at least one surface section of a contour of the product exceeds a predetermined value, to said surface section in such a way that the angle (?) between the axis perpendicular to the layers and the external surface in said product section does not exceed said predetermined value.
    Type: Grant
    Filed: July 2, 2009
    Date of Patent: January 6, 2015
    Assignee: Bego Medical GmbH
    Inventors: Carsten Vagt, Ralf Wehning
  • Patent number: 8739409
    Abstract: The invention relates to a method for manufacturing products by applying material at least partially in layers to form a structure, in particular by selective laser melting (SLM), said method comprising the steps of: (a) providing a base plate, (b) applying a layer of a curable material, (c) selectively curing predetermined zones of the applied layer on the basis of geometrical data of the product, (d) repeating steps (b) and (c) until the geometry of a first partial volume of the product has been created in the form of a cured material and (e) removing the uncured material. According to the invention, a reference mark is provided, the unit formed by the base plate and the first volume zones is clamped into a specific position by means of the reference mark and the respective second partial volume of the respective product is cut from the base plate, preferably by machining, in particular CNC milling.
    Type: Grant
    Filed: July 2, 2009
    Date of Patent: June 3, 2014
    Assignee: BEGO Medical GmbH
    Inventors: Carsten Vagt, Ralf Wehning
  • Publication number: 20120211155
    Abstract: The invention relates to a process for producing products having a specific geometry, in particular dental prostheses or auxiliary dental parts, comprising the steps of producing a plurality of products on the surface of a substrate plate by selective curing, in particular by selective sintering or melting, wherein the material is applied in successive layers, one or a plurality of predetermined regions are selectively cured by means of high-energy radiation and joined to one or a plurality of regions of the subjacent layer after each application of a layer, wherein the predetermined regions are predetermined according to a cross-sectional geometry of the product in the respective layer.
    Type: Application
    Filed: August 25, 2010
    Publication date: August 23, 2012
    Applicant: BEGO MEDICAL GMBH
    Inventors: Ralf Wehning, Carsten Vagt, Ingo Uckelmann, Sascha Gartner
  • Publication number: 20110180971
    Abstract: The invention relates to a method for manufacturing a product in layers, said method comprising the following steps: (a) applying a layer of a curable material, (b) selectively curing predetermined zones of the applied layer on the basis of geometrical data of the product, (c) repeating steps (a) and (b) until the geometry of the product has been created in the form of cured material and (d) removing the uncured material. According to the invention, a finish allowance, for example one with a wedge-shaped cross-section, is applied in steps (a) and (b), in one, two or more product sections in which an angle (?) between an axis perpendicular to the layers and at least one surface section of a contour of the product exceeds a predetermined value, to said surface section in such a way that the angle (?) between the axis perpendicular to the layers and the external surface in said product section does not exceed said predetermined value.
    Type: Application
    Filed: July 2, 2009
    Publication date: July 28, 2011
    Applicant: BEGO Medical GmbH
    Inventors: Carsten Vagt, Ralf Wehning
  • Publication number: 20110170977
    Abstract: The invention relates to a method for manufacturing products by applying material at least partially in layers to form a structure, in particular by selective laser melting (SLM), said method comprising the steps of: (a) providing a base plate, (b) applying a layer of a curable material, (c) selectively curing predetermined zones of the applied layer on the basis of geometrical data of the product, (d) repeating steps (b) and (c) until the geometry of a first partial volume of the product has been created in the form of a cured material and (e) removing the uncured material. According to the invention, a reference mark is provided, the unit formed by the base plate and the first volume zones is clamped into a specific position by means of the reference mark and the respective second partial volume of the respective product is cut from the base plate, preferably by machining, in particular CNC milling.
    Type: Application
    Filed: July 2, 2009
    Publication date: July 14, 2011
    Applicant: BEGO MEDICAL GMBH
    Inventors: Carsten Vagt, Ralf Wehning