Patents Assigned to Schenk AG
  • Underwater cleaning apparatus
    Patent number: 4304022
    Abstract: A tapering flow duct is formed below a chassis having a caterpillar track and forms lateral openings between a cleaning brush and the tracks. The flow duct is connected through an opening to a suction duct of a suction pump which conveys the sucked up liquids with the contaminants contained therein into a filter. Due to the increased flow velocity, the static pressure in the flow duct is reduced, so that the chassis is pressed onto the bottom surface and can overcome severe gradients without sliding.
    Type: Grant
    Filed: December 26, 1979
    Date of Patent: December 8, 1981
    Assignee: Schenk AG
    Inventor: Peter Sommer