Patents by Inventor Shawn Shirvan

Shawn Shirvan 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).

  • Drip irrigation hose and method of its manufacture
    Patent number: 5855324
    Abstract: The serpentine, turbulence inducing path lengths from the inlets to the outlets of the flow regulating passage of a continuous emitter drip irrigation hose are arranged in back to back fashion relative to the outlets in the sense that the chevrons angle away from each of outlets, so there is parallel turbulent flow from two inlets to each outlet. This doubles the flow rate from each outlet without changing the dimensions of the flow regulating passage.
    Type: Grant
    Filed: December 30, 1997
    Date of Patent: January 5, 1999
    Assignee: T-Systems International, Inc.
    Inventors: Michael DeFrank, Wayne Hackman, Shawn Shirvan
  • Drip irrigation hose and method of its manufacture
    Patent number: 5722601
    Abstract: The serpentine, turbulence inducing path lengths from the inlets to the outlets of the flow regulating passage of a continuous emitter drip irrigation hose are arranged in back to back fashion relative to the outlets in the sense that the chevrons angle away from each of outlets, so there is parallel turbulent flow from two inlets to each outlet. This doubles the flow rate from each outlet without changing the dimensions of the flow regulating passage.
    Type: Grant
    Filed: July 15, 1996
    Date of Patent: March 3, 1998
    Assignee: T-Systems International, Inc.
    Inventors: Michael DeFrank, Wayne Hackman, Shawn Shirvan