Patents by Inventor James E. Cordell

James E. Cordell 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).

  • Leveler attachment for ladders
    Patent number: 4802471
    Abstract: There is provided a ladder having a leveler attached thereto. The leveler includes a T-shaped gripping device having a sharp edge which contacts the smooth surface of an adjacent slidable rail for locking the rail into position. The slidable rail acts as one of the legs of the ladder to level the ladder. The leveler has an infinite number of increments of adjustment so that the ladder may be used on most any slope.
    Type: Grant
    Filed: February 3, 1988
    Date of Patent: February 7, 1989
    Inventor: James E. Cordell