Patents by Inventor Robert E. Higgs

Robert E. Higgs 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 metering injection controller
    Patent number: 5427149
    Abstract: A differential pressure regulator and accompanying system enabling accurate metering of fluid under high-pressure, low-flow conditions. An annular passage within the fluid flow path of the regulator creates an additional pressure drop within the regulator to reduce fluid velocity within the regulator and associated wear problems. A ball and seat mechanism is specially sized with respect to a piston and provides improved accuracy.
    Type: Grant
    Filed: November 29, 1993
    Date of Patent: June 27, 1995
    Inventor: Robert E. Higgs
  • Flow metering injection controller
    Patent number: 5282490
    Abstract: A differential pressure regulator and accompanying system enabling accurate metering of fluid under high-pressure, low-flow conditions. An annular passage within the fluid flow path of the regulator creates an additional pressure drop within the regulator to reduce fluid velocity within the regulator and associated wear problems. A ball and seat mechanism is specially sized with respect to a piston and provides improved accuracy.
    Type: Grant
    Filed: June 26, 1992
    Date of Patent: February 1, 1994
    Inventor: Robert E. Higgs