Patents Assigned to Johann Nicolaas Raubenheimer
  • Random steering device for a submerged suction cleaning head
    Patent number: 4521933
    Abstract: An apparatus is provided for the random steering of a suction head for cleaning swimming pools in which there is a suction hose connecting with the head in a direction normal to the surface on which the suction head moves. The apparatus operates by intermittently applying torque about the axis of the suction hose, e.g. where it enters the suction head. The torque is applied by means of a water motor driven by the water flowing from the suction head along the suction hose.
    Type: Grant
    Filed: April 30, 1984
    Date of Patent: June 11, 1985
    Assignee: Johann Nicolaas Raubenheimer
    Inventor: Johann N. Raubenheimer