With Diverse Pump Patents (Class 417/69)
  • Pump set comprising a liquid ring vacuum pump preceeded by a compressor
    Patent number: 4225288
    Abstract: A pump set comprising a compressor followed by a liquid ring vacuum pump with the two pumps matched to each other so that a relatively small liquid ring vacuum pump can draw and maintain vacuum under 40 Torr.
    Type: Grant
    Filed: June 9, 1975
    Date of Patent: September 30, 1980
    Assignee: Siemens Aktiengesellschaft
    Inventors: Kurt Mugele, Bodo Nagel
  • Liquid ring compressor
    Patent number: 3973879
    Abstract: In a liquid ring compressor with a liquid separator which has a liquid take-off point in its housing which is fed by the liquid ring co-rotating with the impeller and connected through connecting lines outside the housing to internal auxiliary liquid circuits, a liquid jet pump is installed in the connecting line and supplied with operating fluid from the liquid take-off point and is used to return liquid which is separated from the compressed gas at least during the start up of the compressor.
    Type: Grant
    Filed: February 18, 1975
    Date of Patent: August 10, 1976
    Assignee: Siemens Aktiengesellschaft
    Inventor: Claus Ramm