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. 27, 1988
Filed:
Jun. 22, 1987
Applicant:
Inventor:
Michael F Hartings, West Carrollton, OH (US);
Assignee:
Monarch Marking Systems, Inc., Dayton, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G08B / ;
U.S. Cl.
CPC ...
340572 ; 343894 ; 343895 ;
Abstract
An anti-theft tag for use in an electronic article surveillance system has a housing, a lock for releasably attaching the housing to an article to be protected, and a marker on the housing, the marker having a resonant circuit including an inductor and a capacitor, the inductor including a solenoid type winding defining a winding opening, wherein the circuit has a Performance Factor P of at least 1.times.10.sup.6 in the equation P=QA.sup.1.5, wherein Q is equal to the circuit Q, and wherein A is equal to the area of the winding opening in square millimeters.