Patents by Inventor Stephen W. Jaworowicz

Stephen W. Jaworowicz 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).

  • Discharge lamp with automatic shut off
    Patent number: 4629939
    Abstract: A high intensity discharge lamp with a safety switch which automatically shuts off the lamp upon rupture of the outer envelope. The switch is formed by a carbon rod disposed in the interior space between the arc tube and the outer envelope and connected in series with one of the electrodes so that the current flow through the rod maintains it at an elevated temperature during operation of the lamp. Upon rupture of the outer envelope, the carbon rod oxidizes and falls, thereby interrupting the electrical path to the electrodes.
    Type: Grant
    Filed: December 21, 1984
    Date of Patent: December 16, 1986
    Assignee: North American Philips Lighting Corporation
    Inventors: Stephen W. Jaworowicz, John F. Hall