Patents Assigned to Desalination Systems, Inc.
  • Reverse osmosis system with automatic flushing
    Patent number: 3959146
    Abstract: A reverse osmosis system which includes a purified water storage tank, has a by-pass pipe around the concentrate flow control of its membrane module and a normally closed valve in the by-pass pipe. The by-pass pipe valve is opened automatically when purified water is withdrawn from the purified water storage tank, thereby to flush feed water through the membrane module.
    Type: Grant
    Filed: December 26, 1974
    Date of Patent: May 25, 1976
    Assignee: Desalination Systems, Inc.
    Inventor: Donald T. Bray
  • Method for cleaning semipermeable membranes
    Patent number: 3940336
    Abstract: Mud, slime, precipitated particles and other foreign matter are removed from the surface of a semipermeable membrane used in a membrane process system by flushing, preferably with the membrane in place in its cartridge or container, with water of purity greater than 1 megohm resistivity.
    Type: Grant
    Filed: June 21, 1974
    Date of Patent: February 24, 1976
    Assignee: Desalination Systems, Inc.
    Inventors: Clement C. Macevicz, Charles W. Million
  • Apparatus for control of a reverse osmosis system
    Patent number: 3939074
    Abstract: A reverse osmosis system having a tank for storing purified water includes a valve in the pipe which introduces feed water into a module containing a semipermeable membrane and which produces the purified water. The valve shuts off or turns on introduction of feed water into the module in response to the weight of purified water in the storage tank.
    Type: Grant
    Filed: June 28, 1974
    Date of Patent: February 17, 1976
    Assignee: Desalination Systems, Inc.
    Inventor: Donald T. Bray