Patents by Inventor Oskar A. Hellwig

Oskar A. Hellwig 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: 4277963
    Abstract: A key loop for releasably supporting keys on the key head of a key case. The loop is of integral construction and formed of spring metal rod stock and includes an enlarged head for connecting the loop to the key head at the upper end of a shank portion which extends downwardly from the head. From the lower end of the shank, the key loop is reversably curved outwardly and upwardly with its free end terminating adjacent the inner surface of the shank at a substantial distance below the head. The free end of the key loop includes a retainer portion which extends inwardly and at least partially toward the lower end of the loop. The upper surface of said retainer portion and opposed portion of the shank provide an access opening for the apertured head of a key. The inner surface of said retainer portion serves to prevent inadvertent removal of a key from the loop.
    Type: Grant
    Filed: August 31, 1979
    Date of Patent: July 14, 1981
    Assignee: Beatrice Foods Co.
    Inventor: Oskar A. Hellwig