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:
Sep. 10, 1991
Filed:
Jan. 30, 1990
Applicant:
Inventors:
Kari T Aittoniemi, Espoo, FI;
Ari T Jarvi, Espoo, FI;
Assignee:
Outokumpu Oy, Helsinki, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R / ; G01R / ; G01V / ; G08B / ;
U.S. Cl.
CPC ...
324239 ; 324329 ; 340551 ;
Abstract
The invention relates to a method for detecting metal objects, particularly to improving discrimination in a metal detector, where at least two responses are defined for metal objects passing through the metal detector. According to the invention, the correlation of the responses is examined within a determined time period in the metal detector, and at least one parameter is formed of these responses in order to define the group of objects that caused the response.