Patents by Inventor Hilmar Leichtenschlag

Hilmar Leichtenschlag 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).

  • Method and heat-exchanger for preheating broken glass and glass-batching melt-goods or similar bulk goods using a heating gas
    Patent number: 5526580
    Abstract: As a rule a melt-good consisting of glass fragments and glass batching will be moist and tend to agglomerate and bridge-form when being preheated in a plate heat-exchanger 10 whereby the travel of the melt-good through the plate heat-exchanger 10 may be blocked. To remedy these drawbacks, the preheating stage is preceded by a drying stage of the moist melt-good. For that purpose, in the intake zone of the melt-good, the moisture of the melt-good is evaporated by means of a separate feed of hot heating gas into the already cooled flows of heating gas. At the same time the heated melt-good is made to pass through cavities 12 through which the steam may escape to the outside. Thereby condensation shall be precluded and only fluid or friable melt-good arrives at the preheating stage.
    Type: Grant
    Filed: June 23, 1994
    Date of Patent: June 18, 1996
    Assignee: Zippe GmbH & Co
    Inventors: Bernd H. Zippe, Erich Weis, Hilmar Leichtenschlag
  • Method and heat-exchanger for preheating broken glass and glass-batching melt-goods or similar bulk goods using a heating gas
    Patent number: 5412882
    Abstract: As a rule a melt-good consisting of glass fragments and glass batching will be moist and tend to agglomerate and bridge-form when being preheated in a plate heat-exchanger 10 whereby the travel of the melt-good through the plate heat-exchanger 10 may be blocked. To remedy these drawbacks, the preheating stage is preceded by a drying stage of the moist melt-good. For that purpose, in the intake zone of the melt-good, the moisture of the melt-good is evaporated by means of a separate feed of hot heating gas into the already cooled flows of heating gas. At the same time the heated melt-good is made to pass through cavities 12 through which the steam may escape to the outside. Thereby condensation shall be precluded and only fluid or friable melt-good arrives at the preheating stage.
    Type: Grant
    Filed: April 23, 1993
    Date of Patent: May 9, 1995
    Assignee: Zippe, GmbH & Co.
    Inventors: Bernd H. Zippe, Erich Weis, Hilmar Leichtenschlag