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. 08, 1994
Filed:
Nov. 09, 1992
Thomas J Fournier, Ann Arbor, MI (US);
Other;
Abstract
A two dimensional light beam array from which a plume of smoke, such as from a diesel engine, passes. Beams of light are projected across the array by light sources for detection by light detectors in order to measure the transmittance or opacity of the beam of smoke between any given source and detector. By projecting beams of light in two dimensions across the array, the diameter and length of intersection of the light beam which projects through the diameter may be determined. To determine this length enables a calculation of a smoke density value for that plume of smoke. Also, by projecting beams of light in two dimensions across the array the position of the smoke plume within the array may be determined.