Patents by Inventor George H. Leonard

George H. Leonard 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).

  • Counterbalance device and torsion member usable therein
    Patent number: 4571775
    Abstract: A device for counterbalancing a moving part comprises an elongated torsion member surrounded by a sleeve, the sleeve being connected to the torsion member at one point and the torsion member being fixedly supported at another point spaced from said one point, the moving part and the sleeve respectively carrying cooperating elements of a cam-follower combination, the cam being shaped, taking into account the torsion characteristics of the torsion element, to produce the desired counterbalancing effect.
    Type: Grant
    Filed: March 18, 1985
    Date of Patent: February 25, 1986
    Assignee: Airpot Corporation
    Inventor: George H. Leonard