Patents by Inventor Robert F. Norwood

Robert F. Norwood 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: 4364405
    Abstract: A crutch containing a retractable metal point wherein an elongated lower central member, adjustably secured between longitudinal support members of the crutch, houses a first retractable elongated metal rod pointed at one end and connected at its other end to a second retractable rod of reduced diameter which passes through a hollow hub disposed at the top of the central member. The hub is provided with a slot through which a pin is connected to said second rod and radially projects outwardly. A spring circumscribes the second rod and applies a spring loading to the first rod when in projected position. A resilient end cap fits over the end of the elongated member and contains an axial bore and an aperatured metal plate through which the metal point projects when in projected position.
    Type: Grant
    Filed: October 16, 1980
    Date of Patent: December 21, 1982
    Inventors: Robert F. Norwood, Robert S. Harper