Patents Assigned to Murata Electronics Oy
  • Patent number: 8997565
    Abstract: A micro-mechanical resonator is provided. The micro-mechanical resonator comprises two masses coupled in the direction of a common axis by a spring structure. The spring structure comprises a spring that couples at least a first bar connected to the masses and a second bar extending in the motion axis direction, said spring being arranged to bend in a direction perpendicular to the motion direction of the motion axis. A micro-mechanical resonator matrix, a sensor and a navigation device are also provided.
    Type: Grant
    Filed: March 2, 2010
    Date of Patent: April 7, 2015
    Assignee: Murata Electronics Oy
    Inventor: Anssi Blomqvist
  • Patent number: 8904865
    Abstract: The invention relates to measuring devices used for measuring angular velocity, and more precisely, to vibrating micro-mechanical sensors of angular velocity. The sensor of angular velocity according to the invention comprises at least two seismic mass structures (1), (2), excitation structures (3), (4) and coupling seesaw type springs (6), (7). The objective of the invention is to provide an improved sensor structure, which enables reliable measuring with good efficiency particularly in small vibrating micro-mechanical angular velocity sensor solutions.
    Type: Grant
    Filed: March 2, 2010
    Date of Patent: December 9, 2014
    Assignee: Murata Electronics Oy
    Inventors: Anssi Blomqvist, Jaakko Ruohio
  • Patent number: 8878421
    Abstract: The invention embodies a harvester (12) to convert energy from mechanical domain to electrical domain. The harvester comprises at least one inertial body (6), at least one beam (7, 9), a support (8) to said at least one beam (7, 9) and transducer means (10, 16), wherein said at least one beam (7, 9) configures the inertial body (6) into a pendulum structure being suspended from said support (8) so that the beam (7, 9) is allowed to bend according to the kinetic state changes of the inertial body (6), and is configured to interact with at least one transducer means (10) that is/are configured to produce change in the electrical state of said transducer means (10, 16) responsively to the kinetic state of the beam (7, 9). The invention also shows harvester module, matrix and a harvester system comprising at least one embodied harvester. The invention also shows a tire and a foot wear that comprises at least one harvester embodied.
    Type: Grant
    Filed: June 23, 2011
    Date of Patent: November 4, 2014
    Assignees: Toyota Jidosha Kabushiki Kaisha, Murata Electronics Oy
    Inventors: Heikki Kuisma, Katsutoshi Narita
  • Patent number: 8723611
    Abstract: The object of the invention is to provide an improved structure for a microelectromechanical (MEMS) resonator. According to a first aspect of the invention, the resonator structure in accordance with the invention has a characteristic frequency of oscillation in combination with a given mechanical amplitude, whereby to set said mechanical amplitude, in the resonator structure, by way anchoring at an anchor point located at a given point of the resonator structure substrate, a first element is adapted oscillatory and a second element is adapted oscillatory in such a manner that at least one of said first element and of said second element are arranged to oscillate synchronously with regard to said anchor point, whereby the location of said anchor point is selected to be substantially within the joint projection defined by the dimensions of said first and said second element.
    Type: Grant
    Filed: February 22, 2011
    Date of Patent: May 13, 2014
    Assignee: Murata Electronics Oy
    Inventor: Ville Kaajakari
  • Patent number: 8646333
    Abstract: The invention relates to measuring devices to be used in the measuring of angular velocity and, more precisely, to vibrating micromechanical sensors of angular velocity. In a sensor of angular velocity according to the invention, a mass is supported to the frame of the sensor component by means of an asymmetrical spring structure (1), (2), (3), (4), (22), (24) in such a way, that the coupling from one mode of motion to another, conveyed by the spring (1), (2), (3), (4), (22), (24), cancels or alleviates the coupling caused by the non-ideality due to the skewness in the springs or in their support. The structure of the sensor of angular velocity according to the invention enables reliable measuring with good performance, particularly in small vibrating micromechanical solutions for sensors of angular velocity.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: February 11, 2014
    Assignee: Murata Electronics Oy
    Inventors: Petri Klemetti, Kaisa Nera, Antti Lipsanen, Anssi Blomqvist, Altti Torkkeli
  • Patent number: 8635909
    Abstract: The invention relates to measuring devices to be used in the measuring of angular velocity and, more precisely, to vibrating micromechanical sensors of angular velocity. In a sensor of angular velocity according to the invention, a mass is supported to the frame of the sensor component by means of an asymmetrical spring structure (1), (2), (3), (4), (22), (24) in such a way, that the coupling from one mode of motion to another, conveyed by the spring (1), (2), (3), (4), (22), (24), cancels or alleviates the coupling caused by the non-ideality due to the skewness in the springs or in their support. The structure of the sensor of angular velocity according to the invention enables reliable measuring with good performance, particularly in small vibrating micromechanical solutions for sensors of angular velocity.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: January 28, 2014
    Assignee: Murata Electronics Oy
    Inventors: Petri Klemetti, Kaisa Nera, Antti Lipsanen, Anssi Blomqvist, Altti Torkkeli
  • Patent number: 8474316
    Abstract: The invention relates to measuring devices used in measuring angular velocity, and, more precisely, to vibrating micromechanical sensors of angular velocity. In the solution for a sensor of angular velocity, a mass is suspended using spring structures having non-orthogonal primary and secondary axes such, that an activation in phase with the primary motion is induced in a detection resonator. The angular velocity to be measured is detected from the phase difference between the primary motion and the secondary motion. The structure of the sensor of angular velocity enables reliable measuring with good performance, particularly, in small vibrating micromechanical solutions for a sensor of angular velocity.
    Type: Grant
    Filed: May 29, 2008
    Date of Patent: July 2, 2013
    Assignee: Murata Electronics Oy
    Inventor: Anssi Blomqvist
  • Patent number: 8450816
    Abstract: The invention relates to microelectromechanical components, like microelectromechanical gauges used in measuring e.g. acceleration, angular acceleration, angular velocity, or other physical quantities. The microelectromechanical component, according to the invention, comprises a microelectromechanical chip part, sealed by means of a cover part, and an electronic circuit part, suitably bonded to each other. The aim of the invention is to provide an improved method of manufacturing a microelectromechanical component, and to provide a microelectromechanical component, which is applicable for use particularly in small microelectromechanical sensor solutions.
    Type: Grant
    Filed: January 24, 2012
    Date of Patent: May 28, 2013
    Assignee: Murata Electronics Oy
    Inventor: Heikki Kuisma
  • Patent number: 8334736
    Abstract: The invention relates to design of micromechanical resonators and, more precisely, to the design of microelectromechanical systems (MEMS) resonators. The invention provides an improved design structure for a microelectromechanical systems (MEMS) resonator including a movable mass structure and a spring structure. The spring structure includes a spring element. The spring element is anchored from one end and connected to a plurality of electrode fingers on another end. The plurality of electrode fingers are operatively connected together at the other end of the spring element. The improved structure is frequency robust to manufacturing variations and enables reliable frequency referencing with good performance, particularly in small size solutions.
    Type: Grant
    Filed: October 28, 2011
    Date of Patent: December 18, 2012
    Assignee: Murata Electronics Oy
    Inventor: Ville Kaajakari