Patents by Inventor Freeman C. Gates

Freeman C. Gates 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).

  • Gas backpressure sensor assembly
    Patent number: 9004048
    Abstract: A gas sensor assembly for sensing a pressure of a gas including a housing, a carrier, an electronic chip, a cap and a biasing apparatus. The housing has a wall defining cavity with a port open to the gas. The carrier is mounted to the wall in the cavity. The electronic chip is secured to the carrier on an opposed side from the port and includes a diaphragm portion exposed to the port. The cap is mounted to the chip on an opposed side from the carrier. The biasing apparatus is located between the cap and the wall of the housing, with the biasing apparatus being configured to bias the cap toward the chip whereby gas pressure acting against the diaphragm is opposed by the biasing apparatus.
    Type: Grant
    Filed: July 9, 2012
    Date of Patent: April 14, 2015
    Assignee: Ford Global Technologies, LLC
    Inventors: Freeman C. Gates, Fadi M. Naddaf, William R. Goodwin
  • GAS BACKPRESSURE SENSOR ASSEMBLY
    Publication number: 20140007850
    Abstract: A gas sensor assembly for sensing a pressure of a gas including a housing, a carrier, an electronic chip, a cap and a biasing apparatus. The housing has a wall defining cavity with a port open to the gas. The carrier is mounted to the wall in the cavity. The electronic chip is secured to the carrier on an opposed side from the port and includes a diaphragm portion exposed to the port. The cap is mounted to the chip on an opposed side from the carrier. The biasing apparatus is located between the cap and the wall of the housing, with the biasing apparatus being configured to bias the cap toward the chip whereby gas pressure acting against the diaphragm is opposed by the biasing apparatus.
    Type: Application
    Filed: July 9, 2012
    Publication date: January 9, 2014
    Applicant: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Freeman C. Gates, Fadi M. Naddaf, William R. Goodwin
  • Diagnostic system for catalytic converter using exhaust gas recirculation system that can detect exhaust pressure buildup
    Patent number: 6968833
    Abstract: A method is described for detecting exhaust pressure buildup in an engine's exhaust system using information from an exhaust gas recirculation system having a valve.
    Type: Grant
    Filed: March 31, 2004
    Date of Patent: November 29, 2005
    Assignee: Ford Global Technologies, LLC
    Inventors: Songping Yu, Michael J. Cullen, Freeman C. Gates
  • Pressure feedback exhaust gas recirculation system
    Patent number: 5613479
    Abstract: A pressure feedback EGR system including an EGR tube having a metering orifice therein and extending between an exhaust passageway and an intake passageway of the internal combustion engine, a first pressure tap connected to the EGR tube on one side of the metering orifice, a second pressure tap connected to the EGR tube on the other side of the metering orifice, and the first pressure tap and the second pressure tap each having an end disposed within the EGR tube and with each end being partially closed to form an orifice extending therethrough to reduce noise from pulsations across the metering orifice.
    Type: Grant
    Filed: December 8, 1995
    Date of Patent: March 25, 1997
    Assignee: Ford Motor Company
    Inventors: Freeman C. Gates, Gregory McCliment, Joseph W. Pratt