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:
Sep. 18, 1984
Filed:
Jul. 01, 1983
Applicant:
Inventors:
Eric Udd, Orange County, CA (US);
Richard F Cahill, Orange County, CA (US);
Assignee:
McDonnell Douglas Corporation, Long Beach, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
G01N / ; G01H / ;
U.S. Cl.
CPC ...
73655 ; 73657 ; 350358 ;
Abstract
A vibration sensor is formed by coupling the vibration to be sensed to change the positional relationship between grating means and light beams so that the resultant variations in light intensity of the beams beyond the grating means vary with a function of the sine and cosine of the positional change. This allows the detection of the vibrationover a wide range of frequencies and amplitudes.