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. 15, 1977
Filed:
Apr. 02, 1975
Maurice Sidney Beck, Ilkley, EN;
Robert Malcolm Henry, Sowerby Bridge, EN;
National Research Development Corporation, London, EN;
Abstract
In a process for controlling a particle flow system which is to be operated at slightly above the velocity at which saltation occurs, a cross correlation technique is used to determine the spread of particle velocities in the system and this is compared with a signal representing the desired spread to produce an error signal indicating the desired mean velocity of particle flow. A second cross correlation technique, having a shorter integration period, is used to determine the actual mean particle velocity and this is compared with the first error signal to produce a second error signal to control the flow rate of the conveying fluid.