Patents by Inventor Kurtis F. Graebe

Kurtis F. Graebe 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).

  • Patent number: 6317912
    Abstract: A composite mattress is comprised of a rectangular intermediate base with four upper sidewalls extending vertically above the base adjacent the edges of the base forming an upper cavity, four lower sidewalls extending vertically below the base adjacent the edges of the base forming a lower cavity, a spring mattress comprised of a plurality of coil springs individually encased within material pockets positioned in the lower cavity below the base, an air mattress comprised of a plurality of adjustable air cell units formed with independent air cells positioned in the upper cavity above the base, and a cover encasing the entire composite mattress.
    Type: Grant
    Filed: March 8, 2000
    Date of Patent: November 20, 2001
    Inventors: Kurtis F. Graebe, Randy M. Marling
  • Patent number: 6189168
    Abstract: An air cell pillow comprised of an air cushion with independent air cells extending outwardly from a common base sheet, the air cushion encased by a cover, the cover having a top, bottom and four side panels arranged generally in a box shape, the top and bottom panels each having a first thickness and the side panels each having a second thickness, the first thickness greater than the second thickness, the first thickness providing a smooth, continuous surface atop the independent air cells of the cushion and the second thickness allowing the pillow to readily collapse upon application of a load to the top and panel panels.
    Type: Grant
    Filed: February 29, 2000
    Date of Patent: February 20, 2001
    Inventor: Kurtis F. Graebe