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:
May. 10, 1994
Filed:
Aug. 30, 1991
Applicant:
Inventor:
Katsumi Tokoyama, Osaka, JP;
Assignee:
Hajime Industries Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ; G01N / ; G01N / ;
U.S. Cl.
CPC ...
7386301 ; 7386302 ; 7386354 ; 7386358 ; 7386381 ; 250576 ; 2502222 ; 2502 / ; 356426 ; 209576 ;
Abstract
A sample of powder granules flowing through an online conveyor is removed periodically and fed to a supply hopper where a predetermined amount of granules are stored. A small portion of the granules are removed from the supply hopper and continuously fed to the upper surface of a rotary table to form a single layer thereon. The sample on the table is optically sensed to detect foreign particles. The foreign particles are removed and subsequently the good particles are removed and passed to a weighing hopper. The ratio of good product after sensing and the sample in the hopper is calculated to determine the relative amount of foreign particles flowing in the system.