Electricity: measuring and testing – Magnetic – Stress in material measurement
Reexamination Certificate
2007-11-13
2007-11-13
Lefkowitz, Edward (Department: 2862)
Electricity: measuring and testing
Magnetic
Stress in material measurement
C073S862335
Reexamination Certificate
active
11092976
ABSTRACT:
A magnetostrictive transducer generating a torsional wave in a subject having a predetermined section and measuring a torsional wave propagating in the subject. In the magnetostrictive transducer having a ferromagnetic patch attached to a predetermined position of a subject, a cylindrical insulator installed around the periphery of the ferromagnetic patch, and a coil wound around the cylindrical surface of the insulator, a torsional wave is generated based on a magnetostrictive effect to then be induced to the subject when current is applied to the coil. The ferromagnetic patch includes a strip unit attached to the subject in an inclined manner with respect to an axial direction of the subject and transferring the torsional wave to the subject; and tail units formed at opposite ends of the strip unit and concentrating a magnetic flux on the strip unit when current is applied to the coil.
REFERENCES:
patent: 4823617 (1989-04-01), Hase et al.
patent: 4852411 (1989-08-01), Beihoff
patent: 5193267 (1993-03-01), Satoh et al.
patent: 5386733 (1995-02-01), Hesthamar et al.
patent: 2002/0189372 (2002-12-01), Wallin et al.
patent: 2005/0179430 (2005-08-01), Park et al.
patent: 2004-535936 (1994-07-01), None
patent: 1997-516474 (1997-03-01), None
Cho Seung-hyun
Kim Woo-chul
Kim Yoon-young
Park Chan-il
Lefkowitz Edward
Seoul National University Industry Foundation
Sughrue & Mion, PLLC
Whittington Kenneth J
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