Patents by Inventor Petrus Klaver

Petrus Klaver 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).

  • Dry spinning pack assembly
    Patent number: 4123208
    Abstract: An improved apparatus for dry spinning of filaments adapted to minimize the occurrence of oversized filaments during spinning. The apparatus includes a spinning pack positioned in a chamber supplied with heated gas. The spinning pack includes a distribution plate provided with a plurality of radial passages for gas, each passage having an opening at one end located at the periphery of the pack and an opening at the other end located at the bottom of the pack at the center of the extruded filament bundle to distribute heated gas from the outer chamber to the center of the filament bundle.
    Type: Grant
    Filed: March 31, 1977
    Date of Patent: October 31, 1978
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Petrus Klaver, Jacob G. Steenhof de Jong