Patents by Inventor Gary Treadwell

Gary Treadwell 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).

  • Metering and flow control valve
    Publication number: 20050189508
    Abstract: A valve for controlling the rate of fluid flow therethrough by rotating a rotor about a spindle having an inlet bore in communication with an eccentrically oriented o-ring set into an eccentrically oriented slot formed in the rotor. The perimeter of the eccentric slot is modified to provide customized unique fluid flow response curves.
    Type: Application
    Filed: September 3, 2004
    Publication date: September 1, 2005
    Inventors: Paul Beswick, Gary Treadwell
  • Pressure compensator flow control
    Patent number: 6314980
    Abstract: A pressure compensating flow control device is disclosed which has a needle valve/spring assembly as a reference restriction which is in axial alignment with a reducing valve situated in a housing of the device. A piston and piston rod is provided in axial alignment with the needle valve and reducing valve to provide compensation for alterations to pressure differential about the piston. The piston rod has an internal channel to allow for fluid communication between inlet and outlet chambers and to allow for passive control of pressure differential. The device provides pressure control for low fluid flows and low pressures.
    Type: Grant
    Filed: September 20, 2000
    Date of Patent: November 13, 2001
    Inventors: Paul R. Beswick, Gary Treadwell