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. 21, 1989
Filed:
Oct. 19, 1987
Applicant:
Inventors:
Jens C Einarson, Stockholm, SE;
Sven-Olof Lundqvist, Hagersten, SE;
Assignee:
Svenska Traforskningsinstitutet, Stockholm, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ; G01N / ;
U.S. Cl.
CPC ...
356335 ; 356379 ;
Abstract
The size distribution of wood chips for the manufacture of cellulose pulp is determined by an optoelectric measuring method and device. Light reflected from a conveying surface (2) and lump material distributed thereon, is recorded optically (3) at short time intervals, and recorded signals are processed electronically for obtaining the size distribution of the material over a number of selected size classes.