Patents by Inventor Roelf Johannes Drost

Roelf Johannes Drost 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 and device for twisting of two ends of thread
    Patent number: 7131256
    Abstract: A method and a device for twisting at least two ends of thread in order to mutually connect the at least two threads, which method comprises the steps of: providing at least two ends of thread running substantially mutually parallel and in the same direction; holding the threads fixedly at a first position at a distance from the ends of thread; rotating the ends of thread on a rotation axis running substantially parallel to the ends of thread; and reducing the distance between the first position and the ends of thread in order to create a thread twist.
    Type: Grant
    Filed: March 28, 2002
    Date of Patent: November 7, 2006
    Assignee: Paper Enschede B.V.
    Inventor: Roelf Johannes Drost
  • Method and device for twisting of two ends of thread
    Publication number: 20040148920
    Abstract: A method and a device for twisting at least two ends of thread in order to mutually connect the at least two threads, which method comprises the steps of: providing at least two ends of thread running substantially mutually parallel and in the same direction; holding the threads fixedly at a first position at a distance from the ends of thread; rotating the ends of thread on a rotation axis running substantially parallel to the ends of thread; and reducing the distance between the first position and the ends of thread in order to create a thread twist.
    Type: Application
    Filed: March 17, 2004
    Publication date: August 5, 2004
    Inventor: Roelf Johannes Drost