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:
May. 23, 2000
Filed:
Jul. 01, 1998
Yusuke Hirabayashi, Saitama, JP;
Masahiro Ohta, Saitama, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A piezoelectric load sensor includes a plurality of upper piezoelectric elements interposed between upper and intermediate conductors and arranged in a row. A plurality of lower piezoelectric elements are interposed between lower and intermediate conductors and arranged in a row. The upper piezoelectric elements have their piezoelectric constants set so that they gradually decrease from the piezoelectric element located at one end in a direction of arrangement of the upper piezoelectric elements toward the piezoelectric element located at the other end in the direction of arrangement. The lower piezoelectric elements have their piezoelectric constants set so that they gradually increase from the piezoelectric element located at one end in a direction of arrangement of the lower piezoelectric elements toward the piezoelectric element located at the other end in the direction of arrangement. Thus, a load-applied position can be detected from a ratio of voltages generated by one set of the upper and lower piezoelectric elements.