Patents by Inventor David Shell

David Shell 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: 8807283
    Abstract: A lift apparatus configured to move a passenger platform of the lift apparatus between a first position and an elevated second position. A stairway of the example lift apparatus may be used as a stairway when the passenger platform is arranged in the first position. As the passenger platform is raised to the elevated second position, hinged steps of the stairway are transformed into a horizontal surface.
    Type: Grant
    Filed: January 8, 2010
    Date of Patent: August 19, 2014
    Inventors: Dennis Shell, David Shell
  • Publication number: 20100176944
    Abstract: A lift apparatus configured to move a passenger platform of the lift apparatus between a first position and an elevated second position. A stairway of the example lift apparatus may be used as a stairway when the passenger platform is arranged in the first position. As the passenger platform is raised to the elevated second position, hinged steps of the stairway are transformed into a horizontal surface.
    Type: Application
    Filed: January 8, 2010
    Publication date: July 15, 2010
    Inventors: Dennis Shell, David Shell
  • Patent number: 5307751
    Abstract: A compact, cleat-like, device for connecting the ends of a rope together where the rope is in tension. The device is generally planar, with two approximately flat surfaces, two approximately parallel sides and trifurcated ends. A central aperture is provided through the flat surfaces. The channels between the three end fingers are tapered, with the apices extending toward the aperture. In use, rope ends are inserted through the aperture, wrapped around two opposite channels and inserted back through the aperture. The device safely and securely maintains the connection between the rope ends. The rope can be easily removed, even with the rope in tension, by pulling one end of the rope back through the eye and unwrapping it from the channels.
    Type: Grant
    Filed: July 2, 1992
    Date of Patent: May 3, 1994
    Inventor: David Shell