Patents by Inventor Tuomo Lehtonen

Tuomo Lehtonen 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).

  • Capacitive acceleration sensor
    Patent number: 7716983
    Abstract: The invention relates to measuring devices used in the measuring of acceleration and, more specifically, to capacitive acceleration sensors. The capacitive acceleration sensor according to the present invention contains a movable electrode (5) supported at an axis of rotation (7). The capacitance change in the pair of electrodes of the acceleration sensor, according to the present invention, is enhanced. The acceleration sensor structure, according to the present invention, enables improving the capacitance sensitivity of the pair of electrodes based on rotational motion and measuring acceleration with good performance in capacitive acceleration sensor designs.
    Type: Grant
    Filed: February 10, 2004
    Date of Patent: May 18, 2010
    Assignee: VTI Technologies Oy
    Inventor: Tuomo Lehtonen
  • Method for the mircomechanical measurement of acceleration and a micromechanical acceleration sensor
    Patent number: 7516038
    Abstract: The invention relates to measurement devices used in the measurement of acceleration, and more specifically, to micromechanical acceleration sensors. The invention seeks to offer an improved method for the measurement of acceleration directed to three or two dimensions using a micromechanical acceleration sensor as well as an improved micromechanical acceleration sensor. Using this invention, the functional reliability of a sensor can be monitored in constant use, and it is suitable for use particularly in small-sized micromechanical acceleration sensor solutions measuring in relation to several axes.
    Type: Grant
    Filed: May 23, 2006
    Date of Patent: April 7, 2009
    Assignee: VTI Technologies Oy
    Inventors: Tuomo Lehtonen, Risto Mourujärvi, Teemu Salo, Jens Thurau
  • Capacitive acceleration sensor
    Patent number: 7398683
    Abstract: The invention relates to measuring devices used in the measurement of acceleration and, more specifically, to capacitive acceleration sensors. The capacitive acceleration sensor according to the present invention contains a movable electrode (5) of the acceleration sensor supported at an axis of rotation (7). Several pairs of electrodes are utilized in the acceleration sensor according to the present invention. Advantages of symmetry are achieved with the acceleration sensor structure according to the present invention, and it enables reliable and efficient measuring of acceleration, in particular in small capacitive acceleration sensor designs.
    Type: Grant
    Filed: February 10, 2004
    Date of Patent: July 15, 2008
    Assignee: VTI Technologies Oy
    Inventor: Tuomo Lehtonen
  • Method for the micromechanical measurement of acceleration and a micromechanical acceleration sensor
    Publication number: 20070062286
    Abstract: The invention relates to measurement devices used in the measurement of acceleration, and more specifically, to micromechanical acceleration sensors. The invention seeks to offer an improved method for the measurement of acceleration directed to three or two dimensions using a micromechanical acceleration sensor as well as an improved micromechanical acceleration sensor. Using this invention, the functional reliability of a sensor can be monitored in constant use, and it is suitable for use particularly in small-sized micromechanical acceleration sensor solutions measuring in relation to several axes.
    Type: Application
    Filed: May 23, 2006
    Publication date: March 22, 2007
    Inventors: Tuomo Lehtonen, Risto Mourujarvi, Teemu Salo, Jens Thurau
  • Capacitive acceleration sensor
    Publication number: 20040221650
    Abstract: The invention relates to measuring devices used in the measuring of acceleration and, more specifically, to capacitive acceleration sensors. The capacitive acceleration sensor according to the present invention contains a movable electrode (5) supported at an axis of rotation (7). The capacitance change in the pair of electrodes of the acceleration sensor, according to the present invention, is enhanced. The acceleration sensor structure, according to the present invention, enables improving the capacitance sensitivity of the pair of electrodes based on rotational motion and measuring acceleration with good performance in capacitive acceleration sensor designs.
    Type: Application
    Filed: February 10, 2004
    Publication date: November 11, 2004
    Inventor: Tuomo Lehtonen
  • Capacitive acceleration sensor
    Publication number: 20040216523
    Abstract: The invention relates to measuring devices used in the measurement of acceleration and, more specifically, to capacitive acceleration sensors. The capacitive acceleration sensor according to the present invention contains a movable electrode (5) of the acceleration sensor supported at an axis of rotation (7). Several pairs of electrodes are utilized in the acceleration sensor according to the present invention. Advantages of symmetry are achieved with the acceleration sensor structure according to the present invention, and it enables reliable and efficient measuring of acceleration, in particular in small capacitive acceleration sensor designs.
    Type: Application
    Filed: February 10, 2004
    Publication date: November 4, 2004
    Inventor: Tuomo Lehtonen