Patents by Inventor Tyrus S. Burford

Tyrus S. Burford 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).

  • Collapsible staircase
    Patent number: 8316595
    Abstract: Embodiments of the invention described herein pertain to a collapsible staircase comprising a plurality of tread assemblies. Each tread assembly is disposed adjacent to at least one of another of the tread assemblies and includes a tread plate and a first and a second telescoping support member attached to a rear surface of the tread plate. The first and second telescoping support members of each tread assembly are operable to slideably engage the telescoping support members of the adjacent tread assemblies for adjusting a height of the staircase and for defining a substantially fixed angle between the tread plates of each of the tread assemblies.
    Type: Grant
    Filed: April 6, 2010
    Date of Patent: November 27, 2012
    Inventors: Tyrus S. Burford, Evan T. Quinley
  • COLLAPSIBLE STAIRCASE
    Publication number: 20110239556
    Abstract: Embodiments of the invention described herein pertain to a collapsible staircase comprising a plurality of tread assemblies. Each tread assembly is disposed adjacent to at least one of another of the tread assemblies and includes a tread plate and a first and a second telescoping support member attached to a rear surface of the tread plate. The first and second telescoping support members of each tread assembly are operable to slideably engage the telescoping support members of the adjacent tread assemblies for adjusting a height of the staircase and for defining a substantially fixed angle between the tread plates of each of the tread assemblies.
    Type: Application
    Filed: April 6, 2010
    Publication date: October 6, 2011
    Inventors: Tyrus S. Burford, Evan T. Quinley