Patents by Inventor Nathan A. Lopez

Nathan A. Lopez 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: 5093162
    Abstract: A composite golf club shaft and the method of constructing the shaft is disclosed. The hollow circular shaft includes a standard butt end having a constant outside diameter along a length of the shaft and a tip end having a constant outside diameter sustantially larger than the tip of a standard shaft, with the constant diameter of the tip end and butt end extending along predetermined lengths of the shaft. An intermediate section of the shaft tapers between the diameters of the butt and tip ends. The shaft is manufactured by wrapping a group of circumferential sections about a mandrel, each layer comprising either standard modulus carbon-graphite fibers or fiberglass fibers in a matrix, with the finished product being heat-cured to produce a golf club shaft.
    Type: Grant
    Filed: April 30, 1990
    Date of Patent: March 3, 1992
    Assignee: Spalding & Evenflo Companies, Inc.
    Inventors: Frank Fenton, Thomas C. Walton, Jeffrey W. Meyer, Nathan A. Lopez