Patents by Inventor Markus SCHAFFER

Markus SCHAFFER 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).

  • Separable threaded connection with asymmetric coating
    Patent number: 11105457
    Abstract: A screw joint has a tubular element with a female thread and a tubular element with a male thread, wherein the male thread and the female thread have first contact surfaces that cooperate with each other, and the tubular elements optionally have second contact surfaces adjacent to the female thread and/or the male thread, wherein the first contact surfaces and the optional second contact surfaces each have a coating including a first and a second layer, wherein the first layer is formed as a conversion layer in each case, one of the first contact surfaces that cooperate with each other has a second layer made of ceramic material with a friction reducing effect and the other of the two contact surfaces that cooperate with each other has, as a second layer, a varnish layer with a binding agent made of an organic polymer throughout which solid lubricant particles are distributed.
    Type: Grant
    Filed: December 29, 2015
    Date of Patent: August 31, 2021
    Assignee: VOESTALPINE TUBULARS GMBH & CO KG
    Inventors: Markus Schaffer, Peter Winkler, Reinhard Leitner, Thomas Schalkhammer
  • Separable Threaded Connection With Asymmetric Coating
    Publication number: 20180031170
    Abstract: A screw joint has a tubular element with a female thread and a tubular element with a male thread, wherein the male thread and the female thread have first contact surfaces that cooperate with each other, and the tubular elements optionally have second contact surfaces adjacent to the female thread and/or the male thread, wherein the first contact surfaces and the optional second contact surfaces each have a coating including a first and a second layer, wherein the first layer is formed as a conversion layer in each case, one of the first contact surfaces that cooperate with each other has a second layer made of ceramic material with a friction reducing effect and the other of the two contact surfaces that cooperate with each other has, as a second layer, a varnish layer with a binding agent made of an organic polymer throughout which solid lubricant particles are distributed.
    Type: Application
    Filed: December 29, 2015
    Publication date: February 1, 2018
    Applicant: voestalpine Tubulars GmbH & Co KG
    Inventors: Markus SCHAFFER, Peter WINKLER, REINHARD LEITNER, Thomas SCHALKHAMMER