Patents Assigned to Automated Pool Cleaners (Pty) Ltd.
  • Swimming pool cleaning device
    Patent number: 4817225
    Abstract: The invention relates to a cleaning device particularly a swimming pool cleaner for automatically cleaning submerged surfaces in which an induced flow through the cleaner is intermittently interrupted to cause random movement of the cleaner over the surface to be cleaned and in which a valve is freely movable towards and away from a valve seat in a flow passage through the cleaner. Preferably the closure member is spherical and has a specific gravity only slightly greater than that of the liquid in which the device is to be used.
    Type: Grant
    Filed: April 14, 1988
    Date of Patent: April 4, 1989
    Assignee: Automated Pool Cleaners (Pty) Ltd.
    Inventor: Herman Stoltz