Patents by Inventor Peter H. Greverath

Peter H. Greverath 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).

  • Flow control valve for passing two fluids in opposite directions
    Patent number: 5931191
    Abstract: A flow control valve includes a piston moveable in a cylindrical chamber between an inlet opening and an outlet opening. The piston head has a maximum diameter smaller than the wall of the chamber to define a fixed orifice. The opposite end of the piston has a sleeve which partially blocks the outlet opening depending upon the position of the piston in the chamber which in turn depends upon the pressure differential across the fixed orifice.
    Type: Grant
    Filed: November 9, 1998
    Date of Patent: August 3, 1999
    Inventors: Frank A. Taube, John D. Taube, Peter H. Greverath
  • Flow control valve with one piece plug/valve tube sleeve assembly
    Patent number: 5913328
    Abstract: A fluid flow control valve having a plug opening with a plug having a central passage for discharging fluid from the controller. The plug opening has a smaller cylindrical guide surface, threaded for engaging the plug, and a larger cylindrical guide surface. The plug has similarly shaped surfaces for engaging the guide surfaces of the plug opening to precisely locate the plug with respect to an impeller chamber.
    Type: Grant
    Filed: September 15, 1997
    Date of Patent: June 22, 1999
    Inventors: John D. Taube, Peter H. Greverath, Eric Geile
  • Flow control valve with impeller having spherical edge
    Patent number: 5806558
    Abstract: A fluid-flow controller having an internal impeller. The impeller is reciprocally mounted within an orifice sleeve and has a peripheral surface engaging the sleeve forming a segment of an imaginary spherical surface.
    Type: Grant
    Filed: February 23, 1996
    Date of Patent: September 15, 1998
    Assignee: W. A. Kates Company
    Inventor: Peter H. Greverath
  • Linear in-line mixing system
    Patent number: 4522504
    Abstract: The invention pertains to a linear in-line mixing system wherein a plurality of tubular elements removably located within a conduit in end-to-end relationship define a passage through which materials to be mixed flow. The elements each contain a pair of helical vanes spiralled in opposite directions about the associated element's longitudinal axis, and engaging elements are interlocked to prevent relative rotation.
    Type: Grant
    Filed: December 8, 1983
    Date of Patent: June 11, 1985
    Assignee: Pyles Division
    Inventor: Peter H. Greverath