Patents by Inventor George J. Frich

George J. Frich 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: 4396094
    Abstract: A guided lift cage which is pivotally mounted to a pair of fixed side rails by a suspension trolley so that the cage is always suspended on a vertical axis, regardless of the axis of the side rails. The path of the side rails may curve from a vertical axis within a shaftway to a horizontal axis above and outside of the shaftway to permit the storage and unloading of the cage, above the shaftway, at a position horizontally offset from the shaftway, to thus provide uninterrupted vertical access to the shaftway in the stored position of the cage.
    Type: Grant
    Filed: May 4, 1981
    Date of Patent: August 2, 1983
    Inventors: Robert J. Charlton, George J. Frich