Patents by Inventor Julian P. Ellison

Julian P. Ellison 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: 6478113
    Abstract: A ladder leveling system for facilitating the safe use of a ladder on uneven surfaces and maintaining the rungs of the ladder in a substantially horizontal orientation. The ladder leveling system includes a ladder with a pair of side rails and a plurality of rungs extending between the side rails, a pair of legs with leg teeth, a plurality of clamping members for selectively urging the engagement of the leg teeth, a pair of foot members coupled to the legs, and a level coupled to a rung of the ladder for facilitating positioning of the ladder such that the rungs are substantially horizontal.
    Type: Grant
    Filed: July 7, 2000
    Date of Patent: November 12, 2002
    Inventor: Julian P. Ellison