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:
Oct. 06, 1998
Filed:
Mar. 21, 1997
Applicant:
Inventor:
Ezra Baruch, Pasadena, CA (US);
Assignee:
Hydro-Aire Division of Crane Company, Burbank, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01P / ; G01D / ;
U.S. Cl.
CPC ...
324175 ; 25023113 ;
Abstract
A fiberoptic velocity transducer for use in determining the rotational speed of an object and comprising a magneto-optic material coated with a dielectric material that operates to selectively pass light energy having a first range of wavelengths, and to reflect light energy having a second range of wavelengths, so as to make the light energy with the second range of wavelengths available as a reference signal, the magneto-optic material functioning to cause a Faraday rotation in the light energy having the first range of wavelengths that is characteristic of the speed of the rotating object.