Patents by Inventor Charles Scott Chambliss

Charles Scott Chambliss 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).

  • Stair chair with an adjustable glide track resistance and braking device
    Patent number: 7520347
    Abstract: A stair chair for transporting a person up and down a flight of stairs and over a surface is disclosed. The stair chair comprising a main frame and a glide track assembly to support the stair chair for movement on the flight of stairs. The glide track assembly is pivotally connected to the main frame for pivotal movement between open and closed positions. The glide track assembly has at least one endless glide track. The stair chair also provides an adjustable glide track resistance and braking device which engages the endless glide track and is configured to infinitely adjust the amount of resistance applied to the endless glide track between 0 to 100% resistance and to set a desired rolling resistance applied to the endless glide track.
    Type: Grant
    Filed: August 3, 2006
    Date of Patent: April 21, 2009
    Assignee: Ferno-Washington, Inc.
    Inventors: Charles Scott Chambliss, Timothy J. Dietz, Steven B. Schrand
  • Stair chair
    Patent number: D519064
    Type: Grant
    Filed: October 20, 2004
    Date of Patent: April 18, 2006
    Assignee: Ferno-Washington, Inc.
    Inventors: Steven B. Schrand, Donald Charles Bierman, Timothy J. Dietz, Charles Scott Chambliss