Patents by Inventor Clark Permar

Clark Permar has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Reverse osmosis filtering apparatus with concentrate dilution
    Patent number: 6299766
    Abstract: Liquid filtering apparatus includes a plurality of reverse osmosis filters for receiving seriatim under pressure a mixture of feed liquid and recirculated concentrate. Feed liquid such as salt water is introduced into the inlet of each reverse osmosis filter to dilute the recirculated concentrate.
    Type: Grant
    Filed: July 6, 2000
    Date of Patent: October 9, 2001
    Inventor: Clark Permar
  • Liquid treatment apparatus for filtering liquid under pressure
    Patent number: 5628198
    Abstract: Apparatus for providing a flow of pressurized liquid includes a hydraulic cylinder, a divider within the cylinder interior, and piston heads positioned in the cylinder interior on opposite sides of the divider. A double ended ram member is movably mounted in the divider and connected to the piston heads. Liquid flow paths extend between subcompartments on opposite sides of the piston heads. A source of pressurized liquid delivers liquid under relatively low pressure to reciprocally move the piston heads and ram member causing intensification of pressure of liquid displaced from the cylinder. Excess pressurized liquid passes through a filter to separate the liquid into permeate and concentrate portions.
    Type: Grant
    Filed: May 13, 1996
    Date of Patent: May 13, 1997
    Inventor: Clark Permar
  • Liquid flow control system
    Patent number: 5482441
    Abstract: Apparatus for controlling flow of a liquid includes a variable displacement liquid pump and a variable displacement liquid meter, the pump and meter being driven by the same drive motor. Containment structure defines a liquid flow path between the pump and meter for containing liquid received from the pump.
    Type: Grant
    Filed: April 18, 1994
    Date of Patent: January 9, 1996
    Inventor: Clark Permar
  • Liquid treatment apparatus for providing a flow of pressurized liquid
    Patent number: 5462414
    Abstract: Apparatus for providing a flow of pressurized liquid includes a hydraulic cylinder, a divider within the cylinder interior, and floating piston heads positioned in the cylinder interior on opposite sides of the divider. A double ended ram member is movably mounted in the divider and engages the piston heads. Liquid flow paths extend between subcompartments on opposite sides of the piston heads. A source of pressurized liquid delivers liquid under relatively low pressure to reciprocally move the piston heads and ram member causing intensification of pressure of liquid displaced from the cylinder. In a preferred embodiment, excess pressurized liquid passes through a filter to separate the liquid into permeate and concentrate portions.
    Type: Grant
    Filed: January 19, 1995
    Date of Patent: October 31, 1995
    Inventor: Clark Permar