Patents by Inventor Bryan F. Jones

Bryan F. Jones 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).

  • High pressure discharge lamps with means for reducing rectification
    Patent number: 4539511
    Abstract: In a high pressure sodium discharge lamp it has been found that rectification can be prevented by ensuring the amalgam does not make electrical contact with the electrode. To achieve this according to the invention a small shoulder member is provided on the inside face of the end wall. Although the small height effectively reduces the temperature differential between the bottom of the shoulder and the top the necessary differential to prevent the amalgam condensing out the top of the shoulder member is maintained by ensuring the width of the shoulder member is a predetermined minimum thickness.
    Type: Grant
    Filed: September 3, 1982
    Date of Patent: September 3, 1985
    Assignee: Thorn EMI plc
    Inventors: Paul L. Denbigh, Richard J. Seddon, Bryan F. Jones