Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1986-03-18
1987-08-04
Swann, III, Glen R.
Communications: electrical
Condition responsive indicating system
Specific condition
335284, 340572, G08B 1324
Patent
active
046849300
ABSTRACT:
A deactivator for deactivating targets used in electromagnetic article surveillance systems comprises a solid element with a convexly curved outer surface, e.g., a cylinder and a plurality of permanent magnets which form a patter of variously directed magnetic fields is a plane adjacent the surface. The curved surface of the deactivator is rolled over a target to be deactivated. The magnets are also arranged in adjacent layers with the magnets of one layer extending in a different direction from the magnets of the other layer to form a composite magnetic pattern which is discontinuous in all directions.
REFERENCES:
patent: 3665449 (1972-05-01), Elder et al.
patent: 3747086 (1973-07-01), Peterson
patent: 3820103 (1974-06-01), Fearon
patent: 3820104 (1974-06-01), Fearon
patent: 4075618 (1978-02-01), Montean
patent: 4118693 (1978-10-01), Novikoff
patent: 4326198 (1982-04-01), Novikoff
patent: 4384281 (1983-05-01), Cooper
patent: 4499444 (1985-02-01), Heltemes et al.
patent: 4568921 (1986-02-01), Pokalsky
3M, "Plastiform.RTM. Brand Magnetic Strip and Sheeting MGO 1016".
U.S. patent application Ser. No. 513,242, filed Jul. 13, 1983.
Minasy Arthur J.
Pokalsky Peter A.
Knogo Corporation
Swann III Glen R.
LandOfFree
Method and apparatus for deactivating targets used in electromag does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for deactivating targets used in electromag, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for deactivating targets used in electromag will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-886082