Patents by Inventor Alfred C. Pennington

Alfred C. Pennington 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).

  • Lever attachment for a rotary door knob
    Patent number: 4504087
    Abstract: A lever attachment for a rotary door knob comprises an arcuate collar adapted to embrace the knob, the collar terminating at its opposite ends in arms and being formed on an arc such that the arms have a tendency to diverge. The collar is formed of material sufficiently resilient to enable the arms to be moved into engagement with one another, thereby causing radial contraction of the collar and enabling the latter to grip the knob. The arms are releasably maintained in engagement by any one of a number of different kinds of latches.
    Type: Grant
    Filed: July 16, 1981
    Date of Patent: March 12, 1985
    Inventor: Alfred C. Pennington