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:
Dec. 09, 1980
Filed:
Feb. 23, 1979
Yokogawa Electric Works, Ltd., Tokyo, JP;
Abstract
A device which detects a displaced position by generating an ultrasonic signal in a magnetostrictive wire and measuring the propagation time of the signal generated. The device includes an exciting means to generate an ultrasonic signal in a magnetostrictive wire, first and second receiving means to receive the ultrasonic signal generated in the magnetostrictive wire by the exciting means, a means for changing the distance between the exciting means and each of the first and second receiving means in accordance with a mechanical displacement, and a circuit means for producing a signal representative to the time periods required for the generated ultrasonic signal to reach the first and second receiving means.