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:
Aug. 11, 1987
Filed:
Sep. 17, 1984
Applicant:
Inventors:
Shigeyoshi Osaki, Takarazuka, JP;
Shin-ichi Nagata, Matsubara, JP;
Assignee:
Kanzaki Paper Mfg. Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B07C / ;
U.S. Cl.
CPC ...
209571 ; 209548 ; 209559 ; 209656 ; 209933 ; 324455 ;
Abstract
A method of detecting and sorting pieces of insulating materials admixed in small pieces of conductive materials, which comprises detecting and amplifying the surface potentials of the conductive materials and the insulating materials by a surface potentiometer on the basis of a time differentiation method, inputting the signal to a comparator, and sensing the presence of the insulating materials. This method is utilized to detect and sort plastics admixed in pulp and papermaking materials or cereals.