Patents by Inventor David W. Carmack

David W. Carmack 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).

  • Castor cover
    Patent number: 5123143
    Abstract: A flexible tubular material to cover a castor. This castor cover has base edges (8) for resting against the floor, a hole (2) diametrically opposite base edges (8) to allow castor stem to pass through to furniture attachment, a slit (4) cut through invention's convex side from hole (2) to one base edge (8) for installation.
    Type: Grant
    Filed: April 8, 1991
    Date of Patent: June 23, 1992
    Inventor: David W. Carmack