Patents Examined by Edward D. Look
  • Centrifugal pump impeller
    Patent number: 5478200
    Abstract: A centrifugal pump impeller for delivering solids-containing media includes a blade having a beginning portion. In the plane of the middle blade surface, there is, in front of the blade beginnings, a very fiat transition from the impeller covering disks to the blade beginnings.
    Type: Grant
    Filed: April 6, 1994
    Date of Patent: December 26, 1995
    Assignee: KSB Aktiengesellschaft
    Inventors: Sonke Brodersen, Peter Hergt, Wolfgang Metzinger, Paul Krieger