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:
Feb. 24, 1976
Filed:
Feb. 26, 1974
Jean-Claude Guichard, Ris-Orangis, FR;
Claude Chauvelier, Ballancourt, FR;
Abstract
A method and apparatus for measuring the concentration of solid particles in a gaseous phase which consists in passing a solid particles laden gas through at least one fluidized bed of balls having a diameter greater than that of the largest particles of said gas in order that said balls are not carried away by the ascending air stream. During their passage through the fluidized bed, these particles collide with the balls of the fluidized bed giving rise to a triboelectrification phenomenon and the electric current collected by the metallic walls of the container in which the fluidized bed is provided, is measured by a suitable electric or electronic control system upon separation of particles from the balls.