Patents by Inventor Daniel H. You

Daniel H. You 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: 5989481
    Abstract: A golf club shaft manufacturing process for making a lightweight golf club shaft that is not uniformly tapered along its length by using standard table-rolling tools and equipment. The process consists generally of creating one or more hollow sleeves and securing them around the exterior of a mandrel, the sleeves having a length and an exterior shape equal to the desired dimensions of the non-tapered portions of the shaft. Graphite flags are then rolled around the mandrel and sleeve, shrink tape is applied and the entire assembly is placed in a curing oven to cure the graphite shaft. The curing temperature is less than the melting point of either the mandrel or sleeve. Once the shaft has been cured, the shrink tape is removed and the mandrel is extracted. The remaining shaft and sleeve assembly is heated to a temperature greater than the melting point of the sleeve material so that the sleeve is liquefied and can be poured out of the shaft. The cured shaft can then be cut, sanded and finished as desired.
    Type: Grant
    Filed: June 18, 1996
    Date of Patent: November 23, 1999
    Inventor: Daniel H. You