Patents by Inventor Donald H. Armitage

Donald H. Armitage 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: 4718153
    Abstract: A process for molding upholstered chair cushions comprising placing a sheet of upholstery fabric between two dies, one having sculptured effects thereon, the dies being movable toward each other to form a cavity between them. A cushion assembly having a thickness (with the upholstery) greater than the distances between the dies in the cavity is placed in the cavity after having been coated on at least one side adjacent the upholstery with an air permeable adhesive. The dies are urged together to compress the cushion in the cavity to force the fabric and the cushion to conform to the shape of the first die. Hot vapors are injected into the cavity to shape the cushion and the fabric generally to the sculpted configuration of the sculpted die.
    Type: Grant
    Filed: April 10, 1986
    Date of Patent: January 12, 1988
    Assignee: Steelcase Inc.
    Inventors: Donald H. Armitage, Robert C. Angell