Patents by Inventor Thomas F. Wise

Thomas F. Wise 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: 10337246
    Abstract: First and second forward legs have pivot ends and free ends. First and second rearward legs have pivot ends and free ends. Four pivot brackets are provided. Two of the four pivot brackets extend rearwardly from each forward leg. In this manner the angle between the forward and rearward legs may be varied. Also provided is a top step, a middle step, and a bottom step. Each step is horizontal when in a ladder orientation. Further provided is an imperforate tongue. The imperforate tongue is pivotably secured between the rearward legs adjacent to the free ends. In this manner the rearward legs may be perpendicularly positioned when in a dolly orientation. Provided last are four wheels. Four wheels are secured to the forward legs. The four wheels extend forwardly from the forward legs for use when in a cart orientation.
    Type: Grant
    Filed: August 16, 2016
    Date of Patent: July 2, 2019
    Inventor: Thomas F. Wise