Patents by Inventor Grafton K. Brabson

Grafton K. Brabson 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).

  • Luminaire lens insert
    Patent number: 4059755
    Abstract: A luminaire lens is provided with a prism arrangement which emits light in two beams. A fluorescent tube fixture is utilized with the lens and approximately the same amount of light comes from the 0.degree. to 30.degree. zone of candlepower distribution and the 30.degree. to 60.degree. zone of candlepower distribution, with very little light emitted from the 60.degree. to 90.degree. zone of candlepower distribution. A second lens insert element is provided within the primary luminaire lens to mask the image of the fluorescent tube.
    Type: Grant
    Filed: December 29, 1975
    Date of Patent: November 22, 1977
    Assignee: Armstrong Cork Company
    Inventor: Grafton K. Brabson