Patents by Inventor Mark A. Sibley

Mark A. Sibley 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).

  • Method of predicting yarn package diameter
    Patent number: 5086984
    Abstract: A method of predicting final yarn package diameter (D) during winding of yarn onto the package. The yarn is to be wound onto the package for a known period of time (TD) to obtain the final yarn package diameter. The method comprises the steps of: measuring the time (TS) for the package to grow to a known diameter (DS); predicting yarn package diameter using the correlation:D=square root [k1+k2(TD/TS)]wherein k1 and k2 are empirically determined constants.
    Type: Grant
    Filed: August 20, 1990
    Date of Patent: February 11, 1992
    Assignee: Du Pont Canada Inc.
    Inventors: Douglas E. Turek, Mark A. Sibley