Patents by Inventor Bernhard Dujka

Bernhard Dujka 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).

  • Low-temperature goniometer for X-ray and neutron diffractometry
    Patent number: 4644761
    Abstract: An Euler's goniometer for low-temperature diffractometry is rotatable about two turning circles and is arranged within a chamber filled with a coolant. Each of the turning circles - that is the chi-circle and the phi-circle - is constituted by a worm wheel which is driven in a stepwise manner by a worm and a stepper motor driving the worm. For providing a compact construction, the stepper motors and the actuated worms are arranged within the chamber as well.
    Type: Grant
    Filed: February 8, 1985
    Date of Patent: February 24, 1987
    Assignee: Kernforschungsanlage Julich Gesellschaft mit beschrankter Haftung
    Inventors: Johann Chatzipetros, Bernhard Dujka, Frank Elf, Georg Will