Patents by Inventor Vernon D. Graff

Vernon D. Graff 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).

  • Gliding chair system
    Patent number: 4053129
    Abstract: An improved gliding chair system for use in residential and commercial applications which provides facilitated gliding movement over non-smooth surfaces, such as carpets, without the need for area chair mats. Lever assemblies attached to the chairs legs automatically distribute the weight of the chair and its user as desired to a greater number of support locations, and in cooperation with various gliding devices, imparts a facilitated gliding action on such surfaces.
    Type: Grant
    Filed: November 29, 1976
    Date of Patent: October 11, 1977
    Inventor: Vernon D. Graff