Patents by Inventor Bernd Weitzel

Bernd Weitzel 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: 7707853
    Abstract: In the process for partially shaping, a glass/glass ceramic article (5) is held on a planar support plate (1) by suction. The glass/glass ceramic article is heated to soften it, so that it has a viscosity below 106 dPa·s. After the softening one or more shaping dies (4) is or are moved upward through an opening or respective openings (3) in the support plate to form raised regions in the softened glass/glass ceramic article (5). The suction force is produced by a low pressure in a hollow compartment (2) below the support plate (1) and acts on the glass/glass ceramic article (5) by means of a gap (G) formed between each shaping die (4) and the support plate. Additional openings can be provided in the support plate and/or in one or more of the shaping dies to assist in applying the suction force to the glass/glass ceramic article. After solidification of the softened glass/glass-ceramic article the shaping die or dies (4) is or are withdrawn.
    Type: Grant
    Filed: April 25, 2005
    Date of Patent: May 4, 2010
    Assignee: Schott AG
    Inventors: Friedrich-Georg Schroeder, Roland Hochhaus, Bernd Weitzel, Bernd Hoppe, Hermann Lemm, Gerhard Hahn, Hans-Walter Abraham
  • Patent number: 6990835
    Abstract: In the process for partially shaping, a glass/glass ceramic article (5) is held on a planar support plate (1) by suction. The glass/glass ceramic article is heated to soften it, so that it has a viscosity below 106 dPa·s. After the softening one or more shaping dies (4) is or are moved upward through an opening or respective openings (3) in the support plate to form raised regions in the softened glass/glass ceramic article (5). The suction force is produced by a low pressure in a hollow compartment (2) below the support plate (1) and acts on the glass/glass ceramic article (5) by means of a gap (G) formed between each shaping die (4) and the support plate. Additional openings can be provided in the support plate and/or in one or more of the shaping dies to assist in applying the suction force to the glass/glass ceramic article. After solidification of the softened glass/glass-ceramic article the shaping die or dies (4) is or are withdrawn.
    Type: Grant
    Filed: February 28, 2002
    Date of Patent: January 31, 2006
    Assignee: Schott AG
    Inventors: Friedrich-Georg Schroeder, Roland Hochhaus, Bernd Weitzel, Bernd Hoppe, Hermann Lemm, Gerhard Hahn, Hans-Walter Abraham
  • Publication number: 20050183459
    Abstract: In the process for partially shaping, a glass/glass ceramic article (5) is held on a planar support plate (1) by suction. The glass/glass ceramic article is heated to soften it, so that it has a viscosity below 106 dPa•s. After the softening one or more shaping dies (4) is or are moved upward through an opening or respective openings (3) in the support plate to form raised regions in the softened glass/glass ceramic article (5). The suction force is produced by a low pressure in a hollow compartment (2) below the support plate (1) and acts on the glass/glass ceramic article (5) by means of a gap (G) formed between each shaping die (4) and the support plate. Additional openings can be provided in the support plate and/or in one or more of the shaping dies to assist in applying the suction force to the glass/glass ceramic article. After solidification of the softened glass/glass-ceramic article the shaping die or dies (4) is or are withdrawn.
    Type: Application
    Filed: April 25, 2005
    Publication date: August 25, 2005
    Inventors: Friedrich-Georg Schroeder, Roland Hochhaus, Bernd Weitzel, Bernd Hoppe, Hermann Lemm, Gerhard Hahn, Hans-Walter Abraham
  • Publication number: 20020121112
    Abstract: In the process for partially shaping, a glass/glass ceramic article (5) is held on a planar support plate (1) by suction. The glass/glass ceramic article is heated to soften it, so that it has a viscosity below 106 dPa·s. After the softening one or more shaping dies (4) is or are moved upward through an opening or respective openings (3) in the support plate to form raised regions in the softened glass/glass ceramic article (5). The suction force is produced by a low pressure in a hollow compartment (2) below the support plate (1) and acts on the glass/glass ceramic article (5) by means of a gap (G) formed between each shaping die (4) and the support plate. Additional openings can be provided in the support plate and/or in one or more of the shaping dies to assist in applying the suction force to the glass/glass ceramic article. After solidification of the softened glass/glass-ceramic article the shaping die or dies (4) is or are withdrawn.
    Type: Application
    Filed: February 28, 2002
    Publication date: September 5, 2002
    Inventors: Friedrich-Georg Schroeder, Roland Hochhaus, Bernd Weitzel, Bernd Hoppe, Hermann Lemm, Gerhard Hahn, Hans-Walter Abraham