Patents by Inventor Knud Styhr Hansen

Knud Styhr Hansen 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).

  • Method and apparatus for measuring acceleration or mechanical forces
    Patent number: 5996412
    Abstract: A method for measuring acceleration or mechanical forces, the acceleration causing inertial forces, uses a transducer or accelerometer in which at least one piezoelectric element is influenced by a shearing force substantially parallel to the polarization axis of the piezoelectric element, where the shearing force is created by a component of a mechanical or an inertial force substantially perpendicular to the polarization axis. A transducer for measuring acceleration or mechanical forces, the acceleration causing inertial forces, includes at least one piezoelectric element and at least two spaces surfaces abutting the piezoelectric element and arranged so that they are mutually displaced by a component of a mechanical or an inertial force acting substantially in a direction perpendicular to the polarization axis of the piezoelectric element.
    Type: Grant
    Filed: April 10, 1998
    Date of Patent: December 7, 1999
    Assignee: A/S Bruel & Kjaer
    Inventor: Knud Styhr Hansen
  • Method and apparatus for measuring acceleration or mechanical forces
    Patent number: 5677487
    Abstract: A method for measuring acceleration or mechanical forces, the acceleration causing inertial forces, uses a transducer or accelerometer in which at least one piezoelectric element is influenced by a shearing force substantially parallel to the polarization axis of the piezoelectric element, where the shearing force is created by a component of a mechanical or an inertial force substantially perpendicular to the polarization axis. A transducer for measuring acceleration or mechanical forces, the acceleration causing inertial forces, includes at least one piezoelectric element and at least two spaced surfaces abutting the piezoelectric element and arranged so that they are mutually displaced by a component of a mechanical or an inertial force acting substantially in a direction perpendicular to the polarization axis of the piezoelectric element.
    Type: Grant
    Filed: February 7, 1996
    Date of Patent: October 14, 1997
    Assignee: A/S Bruel & Kjaer
    Inventor: Knud Styhr Hansen