Patents by Inventor David Mitchenall

David Mitchenall 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).

  • Folding ramp system
    Patent number: 7258384
    Abstract: A pair of folding ramps each of which having a hinge connecting a first ramp section pivotally to a second ramp section. When in a fully unfolded state, structural support adjacent the hinge is provided by a tension cable assembly composed of a tension cable connecting to the first and second ramp sections and passing over an end of a mast, wherein the mast is connected with the hinge so as to be pivotal with respect to the first and second ramp sections. When in a fully folded state, the folding ramps are stored within a ramp storage receptacle of a tail gate.
    Type: Grant
    Filed: April 19, 2005
    Date of Patent: August 21, 2007
    Assignee: GM GlobaL Technology Operations, Inc.
    Inventors: Mark Drabik, Kenneth V. Hollewa, Brian Harrod, David Mitchenall, Jay H. Ovenshire
  • Folding ramp system
    Publication number: 20060232089
    Abstract: A pair of folding ramps each of which having a hinge connecting a first ramp section pivotally to a second ramp section. When in a fully unfolded state, structural support adjacent the hinge is provided by a tension cable assembly composed of a tension cable connecting to the first and second ramp sections and passing over an end of a mast, wherein the mast is connected with the hinge so as to be pivotal with respect to the first and second ramp sections. When in a fully folded state, the folding ramps are stored within a ramp storage receptacle of a tail gate.
    Type: Application
    Filed: April 19, 2005
    Publication date: October 19, 2006
    Inventors: Mark Drabik, Kenneth Hollewa, Brian Harrod, David Mitchenall, Jay Ovenshire