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1. AU2000016090 - Resonant tag with a conductive composition closing an electrical circuit

Office Australia
Application Number 16090/00
Application Date 04.11.1999
Publication Number 2000016090
Publication Date 24.08.2000
Publication Kind A
IPC
G08B 13/24
GPHYSICS
08SIGNALLING
BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
13Burglar, theft or intruder alarms
22Electrical actuation
24by interference with electromagnetic field distribution
G08B 13/00
GPHYSICS
08SIGNALLING
BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
13Burglar, theft or intruder alarms
G08B 13/14
GPHYSICS
08SIGNALLING
BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
13Burglar, theft or intruder alarms
02Mechanical actuation
14by lifting or attempted removal of hand-portable articles
G09F 3/00
GPHYSICS
09EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
3Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
H05K 1/16
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
1Printed circuits
16incorporating printed electric components, e.g. printed resistor, capacitor, inductor
H05K 7/02
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
7Constructional details common to different types of electric apparatus
02Arrangements of circuit components or wiring on supporting structure
Applicants Checkpoint Systems, Inc.
Agents Spruson & Ferguson
Priority Data 09209172 10.12.1998 US
Title
(EN) Resonant tag with a conductive composition closing an electrical circuit
Abstract
(EN)
Briefly stated a tag (10) includes a dielectric substrate having first and second opposite principal surfaces. An electrical circuit having an electrically conductive pattern (18) is formed on at least one of the principal surfaces of the dielectric substrate, the conductive pattern including a gap (22) which establishes an electrical open circuit. An electrically conductive composition (24) including electro-conductive particles (24) is provided for bridging the gap in the conductive pattern to temporarily establish an electrical closed circuit which resonates when exposed to electromagnetic energy at a frequency within a predetermined frequency.