Patents by Inventor Norman C. Kerecman

Norman C. Kerecman 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).

  • Dynamically balanced driveshaft and method of producing the same
    Patent number: 4887989
    Abstract: A dynamically balanced tubular shaft. To balance the shaft, a small weight is secured to one or more locations of imbalance on the shaft by a mechanical fastener, such as a blind hole rivet. The shaft and the weight are provided with aligned openings and the rivet is inserted through the openings from the exterior of the shaft and the inner end of the rivet is upset to provide a mechanical connection between the weight and the shaft. A layer of adhesive can be interposed between the weight and the shaft to bond and seal the weight to the outer surface of the shaft.
    Type: Grant
    Filed: December 28, 1987
    Date of Patent: December 19, 1989
    Assignee: A. O. Smith Corporation
    Inventor: Norman C. Kerecman