Patents by Inventor Simon Shafer

Simon Shafer 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: 3946834
    Abstract: A self storing fire escape ladder of foldable type, including a plurality of pivotally interconnected rung sections and enlarged hook means for engaging a window sill or similar structure during use. The hook means is of effective width less than that of the rung sections, and so contoured that when the rung sections are folded against each other to form a compact unit, the hook means may at least partially encircle the rung sections to hold them in mutually folded relation and form carrying handle means. Optional latching means is provided to prevent movement of the hook means relative to the compact unit when the former is employed as a carrying handle.
    Type: Grant
    Filed: February 27, 1975
    Date of Patent: March 30, 1976
    Inventors: Simon Shafer, Joseph Gilbert