Patents by Inventor Björn Liedtke

Björn Liedtke 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).

  • Apparatus for joining substrates together
    Patent number: 6814125
    Abstract: An apparatus is provided for joining together at least two substrates, each of which has an inner hole. The apparatus has a pin that is adapted to the inner holes of the substrates. The pin is provided with at least two noses that are movable radially relative to the pin. The noses have linear outer surfaces upon which the edges of the inner holes of the substrates can glide downwardly during movement of the noses toward the pin.
    Type: Grant
    Filed: December 14, 2001
    Date of Patent: November 9, 2004
    Assignee: STEAG HamaTech AG
    Inventors: Björn Liedtke, Joachim Gordt, Ulrich Speer, James Wise, Hans Gerd Esser
  • Method and apparatus for filling a pressure tank with a fluid
    Patent number: 6695017
    Abstract: To enable filling a pressure tank with a fluid without having to interrupt the use of the pressure tank, a method is provided for filling a pressure tank with a fluid from a refill tank that is disposed higher, whereby the tanks are interconnected via a gas connecting line and a fluid feed line. The method includes the regulation of the pressure in the pressure tank via a proportional valve disposed in a gas inlet line of the pressure tank, while the connecting lines to the refill tank are closed, the adjustment of the pressure in the refill tank to the pressure in the pressure tank, and the opening of the connecting lines between the refill tank and the pressure tank. Furthermore, an apparatus for carrying out the above method is provided.
    Type: Grant
    Filed: January 9, 2002
    Date of Patent: February 24, 2004
    Assignee: Steag Hamatech AG
    Inventor: Björn Liedtke