Patents Assigned to Kernforschungsanlage Julch GmbH
  • Cryogenic pump and air sampler
    Patent number: 4425811
    Abstract: A sampling unit, especially for stratospheric air sampling when carried aloft by balloon or another vehicle, comprises a liquid coolant reservoir within an evacuated vessel and provided with a cryogenically cooled adsorber for maintaining the vacuum. Nozzles in the vessel wall can be selectively opened and closed to allow samples to be drawn over cooled fingers on which components of the sample are frozen or sublimed. A vacuum gate can be connected to the device for removal of the cold fingers for transfer to a spectrometer.
    Type: Grant
    Filed: June 18, 1982
    Date of Patent: January 17, 1984
    Assignee: Kernforschungsanlage Julch GmbH
    Inventors: Johann Chatzipetros, Manfred Helten