Patents by Inventor Wolf J. Denner

Wolf J. Denner 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).

  • Hoods for the extraction of gases, vapors and suspended material
    Patent number: 4622888
    Abstract: The hood for the extraction of gases, vapors and suspended matter comprises a hood casing, a supply air feed device and one or more suction outlets. It serves preferably as a laboratory hood. In the vicinity of the front suction inlet is provided at least one nozzle ledge for the supply air, whose outlet port is directed in the plane of the front suction inlet. At least one suction outlet is provided, which extracts in the direction of the axis of the vortex flow. According to a preferred embodiment, there are two suction outlets and two facing nozzle ledges. The nozzle ledges can have a rectangular cross-section, the front side being constructed as an outlet port. There is a constant reduction in the nozzle cross-section.
    Type: Grant
    Filed: March 18, 1985
    Date of Patent: November 18, 1986
    Assignee: Waldner Laboreinrichtungen
    Inventors: Wolf J. Denner, Andreas Biernacki, Gunter Breitschwerdt
  • Hood for the extraction of gases, vapors and suspended matter
    Patent number: 4550650
    Abstract: The hood for the extraction of gases, vapors and suspended matter comprises a hood casing, a supply air feed device and one or more suction outlets. It serves preferably as a laboratory hood. In the vicinity of the front suction inlet is provided at least one nozzle ledge for the supply air, whose outlet port is directed in the plane of the front suction inlet. At least one suction outlet is provided, which extracts in the direction of the axis of the vortex flow. According to a preferred embodiment, there are two suction outlets and two facing nozzle ledges. The nozzle ledges can have a rectangular cross-section, the front side being constructed as an outlet port. There is a constant reduction in the nozzle cross-section.
    Type: Grant
    Filed: March 3, 1983
    Date of Patent: November 5, 1985
    Assignee: Waldner Laboreinrichtungen GmbH & Co.
    Inventors: Wolf J. Denner, Andreas Biernacki, Gunter Breitschwerdt