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:
Nov. 04, 2003
Filed:
Nov. 05, 2002
Applicant:
Inventor:
Rainer Nolte, Waldsolms, DE;
Assignee:
Checkpoint Systems International GmbH, Hirshhorn/Neckar, DE;
Primary Examiner:
Int. Cl.
CPC ...
H01G 4/32 ;
U.S. Cl.
CPC ...
H01G 4/32 ;
Abstract
An RF security element has a capacitor ( ) and a spiral-wound coil ( ) with at least two windings ( ), in which the coil has at least one winding of straight wire ( ) and at least one winding of undulated wire ( ). The coil is produced by alternately winding at least one turn of straight wire ( ) and at least one turn of undulated wire ( ) onto a winding spindle ( ), with the undulated wire being formed by passing a portion of straight wire ( ) through at least two mating gears ( ). The capacitor ( ) is produced by intertwining first and second pieces of wire ( ) on the two ends of the coil ( ).