Patents by Inventor Richard DuBois, Jr.

Richard DuBois, Jr. 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).

  • Sealed beam headlamp and method for testing its serviceability
    Patent number: 4720652
    Abstract: A sealed beam lamp having an outer envelope defining a gas-tight enclosure filled with an inert nonreactive gas at a pressure in the range of 5 to 50 Torrs, and an illuminating burner capsule mounted within the enclosure. The integrity of the gas-tight enclosure as well as the pressure of the gas is verified by creating a predetermined electrical potential within the enclosure to form a glow discharge in the gas if the gas pressure is within a predetermined range indicating the lamp is serviceable and an arc discharge if the gas pressure is in excess of the range indicating the lamp is defective.
    Type: Grant
    Filed: January 20, 1987
    Date of Patent: January 19, 1988
    Assignee: Cooper Industries, Inc.
    Inventor: Richard DuBois, Jr.
  • Vacuum fluorescent display device with substrate including a metal plate
    Patent number: 4410830
    Abstract: The invention relates to vacuum fluorescent devices having substrates on which anodes coated with fluorescent material are disposed. According to the invention, the substrate comprises a relatively thin layer of insulation on a metal plate so that the acceleration potential in the vacuum fluorescent device may be increased for greater brightness.
    Type: Grant
    Filed: March 3, 1981
    Date of Patent: October 18, 1983
    Assignee: Edison International Inc.
    Inventor: Richard DuBois, Jr.