Patents by Inventor Gwen H. Kramer

Gwen H. Kramer 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).

  • Tubular skylight with improved dome
    Patent number: 5655339
    Abstract: A tubular skylight having an improved dome improving the efficiency of the skylight. The dome includes an integral prism in a portion of its outer surface to reflect light downwardly through the skylight. The dome is hemispherical, and the prism includes a plurality of grooves extending along great circles that pass through the apex of the dome. The prism covers only an angular segment of the hemispherical dome; and the grooves stop short of the apex of the dome.
    Type: Grant
    Filed: August 9, 1996
    Date of Patent: August 12, 1997
    Assignee: ODL, Incorporated
    Inventors: David A. DeBlock, Gwen H. Kramer, Ronald L. Sitzema, Jr.