Patents by Inventor Tommy Persson

Tommy Persson 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).

  • Vortex detection and turbulence measurement
    Patent number: 7942370
    Abstract: A vortex detection device suitable for use in fighter aircraft including an angle-of-attack sensor, an angle-of-attack processing unit connected to the angle-of-attack sensor capable of forming a signal representative of current air stream's angle-of-attack, a synthetic angle-of-attack estimation unit capable of forming a synthetic angle-of-attack signal, and a vortex level calculation unit connected to the processing and estimation unit, capable of calculating a vortex level signal, and a vortex detection unit connected to the vortex level calculation unit, for deciding, based on the vortex level signal, if a vortex is detected.
    Type: Grant
    Filed: May 7, 2007
    Date of Patent: May 17, 2011
    Assignee: SAAB AB
    Inventors: Robert Hillgren, Tommy Persson, Fredrik Karlsson
  • Vortex detection and turbulence measurement
    Publication number: 20100012789
    Abstract: A vortex detection device suitable for use in fighter aircraft including an angle-of-attack sensor, an angle-of-attack processing unit connected to the angle-of-attack sensor capable of forming a signal representative of current air stream's angle-of-attack, a synthetic angle-of-attack estimation unit capable of forming a synthetic angle-of-attack signal, and a vortex level calculation unit connected to the processing and estimation unit, capable of calculating a vortex level signal, and a vortex detection unit connected to the vortex level calculation unit, for deciding, based on the vortex level signal, if a vortex is detected.
    Type: Application
    Filed: May 7, 2007
    Publication date: January 21, 2010
    Applicant: SAAB AB
    Inventors: Robert Hillgren, Tommy Persson, Fredrik Karlsson
  • Controlled expansion of rock bolt
    Patent number: 7320560
    Abstract: The present invention is related to a method for manual installation of rock bolts expandable by means of a pressure media comprising manual coupling of a pressure source to a rock bolt to be expanded. The method comprises the steps of an operator starting a sequence whereby the rock bolt is pressurized to a predetermined pressure, and it being ensured that the predetermined pressure is kept for a predetermined period of time. The present invention is also related to such a control system, and an apparatus comprising such a control system.
    Type: Grant
    Filed: May 12, 2004
    Date of Patent: January 22, 2008
    Assignee: Atlas Copco Rock Drills AB
    Inventors: Tommy Persson, Morgan Kanflod, Fredrik Öberg, Tapio Toivonen, Niclas Örjas, Hans Gustavsson, Göran Sjöstedt
  • Controlled expansion of rock bolt
    Publication number: 20070036614
    Abstract: The present invention is related to a method for manual installation of rock bolts expandable by means of a pressure media comprising manual coupling of a pressure source to a rock bolt to be expanded. The method comprises the steps of an operator starting a sequence whereby the rock bolt is pressurized to a predetermined pressure, and it being ensured that the predetermined pressure is kept for a predetermined period of time. The present invention is also related to such a control system, and an apparatus comprising such a control system.
    Type: Application
    Filed: May 12, 2004
    Publication date: February 15, 2007
    Applicant: ATLAS COPCO ROCK DRILLS AB
    Inventors: Tommy Persson, Morgan Kanflod, Tapio Toivonen, Fredrik Öberg, Niclas Örjas, Hans Gustavsson, Göran Sjöstedt
  • Process for coating a substrate
    Publication number: 20040110020
    Abstract: The invention relates to a process for the coating of a wooden, wood-like and/or cellulose-containing substrate comprising the steps of:
    Type: Application
    Filed: November 25, 2003
    Publication date: June 10, 2004
    Inventors: Ann Kerstin Birgitta Kjellqvist, Leif Tommy Persson
  • Process for coating a substrate
    Publication number: 20020081393
    Abstract: The invention relates to a process for the coating of a wooden, wood-like and/or cellulose-containing substrate comprising the steps of:
    Type: Application
    Filed: December 18, 2001
    Publication date: June 27, 2002
    Inventors: Ann Kerstin Birgitta Kjellqvist, Leif Tommy Persson