Patents by Inventor Louis N. Frank

Louis N. Frank 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).

  • Overhead crane with redundant safety features
    Patent number: 4073476
    Abstract: An overhead crane with redundant safety features is shown which utilizes two independently reeved hoisting systems and a dual element hook, whereby if one of the elements of the hook or one of the hoisting systems were to encounter a failure, the load being supported by the crane would remain safely supported above the ground.
    Type: Grant
    Filed: May 24, 1976
    Date of Patent: February 14, 1978
    Assignee: Kranco, Inc.
    Inventor: Louis N. Frank