Patents by Inventor Charles E. Littlejohn

Charles E. Littlejohn 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).

  • Emergency escape system for use in multistoried buildings
    Patent number: 4406351
    Abstract: An emergency escape system with escape module suspended from a cable or the like along but unattached to the exterior of a multistoried building, such cable being powered by any suitable mechanism incorporating hoisting and pumping devices such as the ground unit described in co-inventor Cook's U.S. Pat. No. 3,750,686, or the winding drum and water pump of a fire truck or other emergency vehicle, such cable being passed around a pulley supported on the roof of the building, so as to raise the escape module and lower it with encapsulated escapees to a haven.
    Type: Grant
    Filed: February 13, 1981
    Date of Patent: September 27, 1983
    Inventors: Charles E. Littlejohn, Henry D. Cook