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. 17, 2000
Filed:
Mar. 30, 1999
John D Black, Nr Ashbourne, GB;
Rolls Royce PLC, Derby, GB;
Abstract
A non-obstructive fluid diagnostic technique is described which enables the measurement of different parameters in a fluid. The diagnostic technique includes the steps of focusing a laser (10) in a fluid volume (14) to generate a laser induced breakdown spark (15). The characteristics of the initial laser induced breakdown spark (15) are measured and compared to the characteristics of a delayed image of the spark, formed by light emission due to recombination and excited molecules and ions generated by the laser induced spark (15). The differences between the initial and delayed images being used to diagnose characteristics of the fluid, such as velocity, temperature and pressure.