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:
Aug. 07, 2001
Filed:
Jun. 11, 1999
Applicant:
Inventor:
Arnold F. Sprecher, Jr., Raleigh, NC (US);
Assignee:
MTS Sytems Corporation, Eden Prairie, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01B 7/14 ;
U.S. Cl.
CPC ...
G01B 7/14 ;
Abstract
A precision permanent position magnet assembly for use with a magnetostrictive linear displacement transducer having a magnetostrictive waveguide to provide an enhanced return signal is disclosed. The North-South axes of the magnet assembly are perpendicular to the waveguide center line axis and preferably includes three bar-type permanent magnets in a side by side alternating polarity configuration spaced apart with the pole spacing being one-half the wavelength of the return signal imposed on the waveguide. Three sets of such magnets may be radially disposed at 120 degree increments in a non-magnetic carrier.