The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 14, 1997
Filed:
Feb. 07, 1996
Knud Styhr Hansen, Kokkedal, DK;
A/S Bruel & Kjaer, Naerum, DK;
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.