Patents by Inventor Richard E. Spradling

Richard E. Spradling 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).

  • Light and filter support structure
    Patent number: 5613759
    Abstract: A ceiling structure for retaining air filter panels having a grid of interconnected rails. Each rail has a recessed channel for containing a light fixture so that the light fixture does not hang below the ceiling surface. The structure may also include hanger hooks attachable to the rails for suspending fixtures, wall panels, and pivoting wall headers to permit angled arrangements of wall panels. The light fixture attached within the channel is an extruded panel that snaps into the channel and which includes standard light tube connectors.
    Type: Grant
    Filed: February 14, 1995
    Date of Patent: March 25, 1997
    Assignee: Brod & McClung-Pace Co.
    Inventors: Craig S. Ludwig, Richard E. Spradling, David E. Benson