Patents by Inventor John R. Marasco

John R. Marasco 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).

  • Drag chain sprocket
    Patent number: 4308019
    Abstract: An improved drag chain sprocket comprising two spaced-apart discs on a hub with removable teeth bolted to the discs. The open design of the sprocket prevents build-up of abrasive materials between the sprocket and the chain. The mounting position of the teeth may be altered to utilize unworn surfaces, thereby extending the working life of the sprocket.
    Type: Grant
    Filed: February 7, 1980
    Date of Patent: December 29, 1981
    Assignee: Industrial Chain Products, Inc.
    Inventors: Edward J. Horkey, John R. Marasco