Patents by Inventor William Sax

William Sax 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).

  • Germicidal lamp with end of life arc quenching device
    Patent number: 6812639
    Abstract: An end of life quenching device for a vapor lamp preventing damage to the lamp and socket structure. Mica is attached to a lead wire of a filament. As an emission material on the filament is consumed and the vapor lamp reaches the end of its life, the resulting increase in voltage causes an arc. The arc may extend down the lead wire. The hydrated OH group in the mica releases hydrogen, which extinguishes the arc within the vapor lamp. Damage is thereby prevented. The mica withstands the high pressing temperatures required in the manufacture of vapor lamps with quartz envelopes and used to generate ultraviolet radiation in germicidal applications.
    Type: Grant
    Filed: September 13, 2002
    Date of Patent: November 2, 2004
    Assignee: Light Sources, Inc.
    Inventors: Patrick Ward, William Sax
  • Germicidal lamp with end of life arc quenching device
    Publication number: 20040051459
    Abstract: An end of life quenching device for a vapor lamp preventing damage to the lamp and socket structure. Mica is attached to a lead wire of a filament. As an emission material on the filament is consumed and the vapor lamp reaches the end of its life, the resulting increase in voltage causes an arc. The arc may extend down the lead wire. The hydrated OH group in the mica releases hydrogen, which extinguishes the arc within the vapor lamp. Damage is thereby prevented. The mica withstands the high pressing temperatures required in the manufacture of vapor lamps with quartz envelopes and used to generate ultraviolet radiation in germicidal applications.
    Type: Application
    Filed: September 13, 2002
    Publication date: March 18, 2004
    Inventors: Patrick Ward, William Sax