Patents by Inventor Brenda Rimmington

Brenda Rimmington 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).

  • Systems for monitoring the composition of exhaust gases
    Patent number: 4057996
    Abstract: In a system for monitoring the composition of exhaust gases from an internal combustion engine, a gas-sensitive resistor consisting of gallium oxide is exposed to the gases and is maintained at a substantially constant temperature above that of the gases. A signal is generated dependent on the resistance of the resistor, which varies monotonically with the air/fuel ratio of the inlet mixture, this signal being usable in a system for automatically controlling the composition of the inlet mixture.
    Type: Grant
    Filed: January 8, 1976
    Date of Patent: November 15, 1977
    Assignee: National Research Development Corporation
    Inventors: Jack Graham Firth, Thomas Alwyn Jones, Brenda Rimmington