Patents by Inventor Daniel R. Sisson

Daniel R. Sisson 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).

  • Retractable step
    Patent number: 5513866
    Abstract: A retractable step including at least a first and second tube member, a step platform and a retraction device. The first tube member is attached to the vehicle. The step platform is attached to one end of the second tube member. The second tube member, with the step platform, is slidable over the first tube attached to the vehicle. The retraction device provided a method of retracting the step platform from an in use lower position to an upper retracted position. An electric motor may be used to drive the retraction device.
    Type: Grant
    Filed: May 24, 1994
    Date of Patent: May 7, 1996
    Inventor: Daniel R. Sisson