Patents by Inventor John E. Cridland

John E. Cridland 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).

  • Bimetal switch for electrode heat cutout within an electrically insulating support
    Patent number: 4695768
    Abstract: A fluorescent lamp electrode heat cutout switch is provided for placement within a fluorescent lamp stem and outside the discharge envelope and is configured such that a resistive heater wire is connected to one electrode lead-in and a bimetallic switch element is connected to the other electrode lead-in and configured upon an insulating support in such fashion that the heat cutout switch receives heat from the resistive heater to activate the switch so that the electrode heat is cut off when the lamp starts and is kept off during normal lamp operation.
    Type: Grant
    Filed: December 19, 1985
    Date of Patent: September 22, 1987
    Assignee: General Electric Company
    Inventors: Edward J. Covington, John E. Cridland, John P. Gorman