Patents by Inventor John Coxon

John Coxon 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).

  • Fire protection : air escape vent
    Publication number: 20060211363
    Abstract: An air escape vent with a balanced louvre to allow air to escape rapidly after a minimum air pressure is reached.
    Type: Application
    Filed: February 21, 2006
    Publication date: September 21, 2006
    Inventor: John Coxon
  • Halogenated hydrocarbon compositions and electrical apparatus containing such compositions
    Patent number: 4401871
    Abstract: A liquid halogenated hydrogenated hydrocarbon composition suitable for use as a dielectric and/or arc-extinguishing fluid in electrical apparatus, which comprises(a) a major proportion by weight of one or more halogenated paraffinic hydrocarbons having at least 8 carbon atoms and containing from 40% to 70% by weight of halogn based on the halogenated paraffinic hydrocarbon, and(b) a minor proportion by weight of at least one non-flammable viscosity-reducing additive for the halogenated paraffinic hydrocarbon (a) which contains at least 50% by weight of halogen based on the additive and is a halogenated aliphatic hydrocarbon containing from 2 to 6 carbon atoms.Suitable electrical apparatus may comprise a circuit interruption device such as a switchgear.
    Type: Grant
    Filed: January 15, 1982
    Date of Patent: August 30, 1983
    Assignee: Imperial Chemical Industries PLC
    Inventors: Harold Lloyd, John Coxon