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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.:

US 7614313 B1

PDFFull Text
Date of Patent:
Nov. 10, 2009

Filed:

Sep. 21, 2006

Method of generating and measuring torsional waves in cylindrical structure using magnetostrictive effect, and magnetostrictive transducer and structure diagnosis apparatus using the method

Applicants:

Yoon-young Kim, Seoul, KR;

Seung-hyun Cho, Ansan-si, KR;

Ik-kyu Kim, Seoul, KR;

Chan-il Park, Gunpo-si, KR;

Inventors:

Yoon-Young Kim, Seoul, KR;

Seung-Hyun Cho, Ansan-si, KR;

Ik-Kyu Kim, Seoul, KR;

Chan-Il Park, Gunpo-si, KR;

Assignee:

Seoul National University Industry Foundation, Seoul, KR;

Attorneys:

The Nath Law Group

Jerald L. Meyer

Derek Richmond

Primary Examiner:

Max Noori

Int. Cl.
CPC ...
G01L 3/02 (2006.01);
U.S. Cl.
CPC ...
Abstract

A method and apparatus for generating and measuring a torsional wave in a rod, shaft or pipe using magnetostriction are provided. The magnetostrictive transducer includes at least one strip attached to a predetermined position of a rod member, an insulator disposed around the strip, a coil wound around the insulator, and magnets providing a bias magnetic field to the strip, wherein a plurality of strips are attached to the rod member at predetermined intervals in a circumferential direction, and one pole of the magnet is close to an end of a first strip among the plurality of strips, and another pole of the magnet is close to an end of a second strip among the plurality of strips.

Find Patent Forward Citations

Quick Actions:

Kim, Yoon-Young. (2009). Method of generating and measuring torsional waves in cylindrical structure using magnetostrictive effect, and magnetostrictive transducer and structure diagnosis apparatus using the method (U.S. Patent No. 7614313). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7614313

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