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. 28, 1990
Filed:
Sep. 11, 1989
Jacob Tellerman, Bayside, NY (US);
MTS Systems Corporation, Eden Prairie, MN (US);
Abstract
A displacement transducer utilizes a torsional strain waveguide having a magnetic member that is adjustable positioned along the length of the waveguide, when an electrical current pulse is passed along the waveguide and reaches the magnet torsional strain wave is created in the waveguide. The torsional strain wave will be reflected back toward a mounting end of the waveguide where a converter or sensor is positioned to sense the strain wave signal and convert it to an electrical output signal. The strain wave signals have signal lobes of a time period. A waveguide mounting block supports the waveguide at the mounting end and provides a reflection point for the torsional strain waves. The waveguide mounting block is on an opposite side of the signal sensor from the magnet. The mounting block is precisely positioned a distance from the signal sensor that is equal to distance traveled by the torsional strain wave in the waveguide during one-half of the signal lobe time period so that the reflected wave becomes an additive signal to the incoming torsional strain wave signals to provide a greater amplitude to the signal being received.