Patents by Inventor Richard E. Thek

Richard E. Thek 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).

  • Process and apparatus for tow cross-section measurement and control
    Patent number: 5146651
    Abstract: Controlling the cross-sectional characteristics of moving tow lines by providing monitors and positioning devices so as to improve stuffer box crimp uniformity. The mass distribution profile of a filamentary tow band is continuously measured as a function of the width of the band, and the information obtained is used to change the position of the band when a deviation from a predetermined value is noted. Positioning devices are used to carry out the movement or adjusting of the band in accordance with a signal so as to correct the deviation and present to a crimping apparatus, such as a stuffer box crimper, a band having a uniform mass distribution profile.
    Type: Grant
    Filed: December 21, 1990
    Date of Patent: September 15, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Joseph J. Duffy, Jerry F. Potter, Elwood A. Roth, Kalika R. Samant, Richard E. Thek, Maurice C. Todd