Patents by Inventor Klaus Stoof

Klaus Stoof 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).

  • High-pressure centrifugal pump unit
    Patent number: 4274803
    Abstract: A high feed centrifugal pump has a housing, a low-speed suction stage arranged in the housing and having an axis, at least one high-speed high pressure stage also arranged in the housing and axially displaced from the low speed suction stage, so that the housing has a suction side and a pressure side, and a drive operative for driving the stages independently of each other and including a first prime mover operative for driving the low speed-suction stage and a second prime mover operative for driving the high-speed high-pressure stage. One of the prime movers which is operative for driving a respective one of the stages is flanged to the housing at a respective one of the sides, whereas the other of the prime movers is flanged to the one prime mover in tandem arrangement.
    Type: Grant
    Filed: May 8, 1979
    Date of Patent: June 23, 1981
    Assignee: VEB Kombinat Pumpen und Verdichter
    Inventors: Hans Spengler, Klaus Stoof