Patents Examined by James L. Ridgell, Jr.
  • Window sash and frame with thermal barrier
    Patent number: 4024690
    Abstract: The window is comprised of upper and lower sashes. Each sash includes two panes of glass with an air space barrier therebetween. All metal members on one face of each sash are thermally and electrically insulated from corresponding members on the opposite face of each sash to thereby provide a complete thermal and electrical barrier between the indoor and outdoor faces of the sashes.
    Type: Grant
    Filed: February 25, 1976
    Date of Patent: May 24, 1977
    Assignee: Replacement Products Industries Corporation
    Inventors: David R. Collins, Sheldon N. Katz