Patents by Inventor Keith A. Helms

Keith A. Helms 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).

  • Patent number: 6850010
    Abstract: The invention is a microwave powered lamp (10). The lamp includes a light reflective cavity (28); an electrodeless bulb (16) contained in the light reflective cavity (26) from which light is emitted when the electrodeless bulb is excited by microwaves; a magnetron (12) for providing the microwaves for exciting the electrodeless bulb; a waveguide (14) which couples the microwaves emitted by the magnetron to the light reflective cavity for exciting the electrodeless bulb; a housing (22) which contains the lamp; a detector (102, 202) disposed within the housing, which detects the microwaves which are not coupled to the bulb during operation of the magnetron and outputs a signal indicative of a level of received microwaves; and a magnetron control (300), coupled to the detector, which causes the magnetron to be turned off when a level of the signal indicates the level of received microwaves exceeds a threshold.
    Type: Grant
    Filed: July 16, 2003
    Date of Patent: February 1, 2005
    Assignee: Fusion UV Systems, Inc.
    Inventors: Jonathan D. Barry, Keith A. Helms