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:
Nov. 17, 1987
Filed:
Dec. 21, 1984
Applicant:
Inventors:
Jorg Hofmann, Munich, DE;
Kurt Ding, Augsburg, DE;
Assignee:
MTU Motoren-und Turbinen-Union Munchen GmbH, Munich, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01P / ; G01P / ;
U.S. Cl.
CPC ...
356 28 ; 7386106 ;
Abstract
Method and apparatus for optical measurement of fluid flow in which particles are injected into the fluid flow to permit accurate velocity measurements to be made thereof between two laser beams through measuring windows and to obtain a velocity profile. One beam is fixed and provides indication of start event, and the other beam is moved in discrete angular steps around the first beam in oscillatory fashion to provide indication of stop events. The sum of the particles passing the start beam and the sum of the particles subsequently passing the stop beam are correlated by electronic evaluation circuitry.