DE3463982D1 - Resonant circuit for theft protection of articles, method of making such circuits and device for carrying out the method - Google Patents

Resonant circuit for theft protection of articles, method of making such circuits and device for carrying out the method

Info

Publication number
DE3463982D1
DE3463982D1 DE8484810433T DE3463982T DE3463982D1 DE 3463982 D1 DE3463982 D1 DE 3463982D1 DE 8484810433 T DE8484810433 T DE 8484810433T DE 3463982 T DE3463982 T DE 3463982T DE 3463982 D1 DE3463982 D1 DE 3463982D1
Authority
DE
Germany
Prior art keywords
articles
circuits
carrying
making
resonant circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DE8484810433T
Other languages
German (de)
Inventor
Bernhard Lotscher
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
VOLEX MAURER AG
Original Assignee
VOLEX MAURER AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by VOLEX MAURER AG filed Critical VOLEX MAURER AG
Application granted granted Critical
Publication of DE3463982D1 publication Critical patent/DE3463982D1/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
    • G08B13/2405—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting characterised by the tag technology used
    • G08B13/2414—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting characterised by the tag technology used using inductive tags
    • G08B13/242—Tag deactivation
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
    • G08B13/2428—Tag details
    • G08B13/2437—Tag layered structure, processes for making layered tags
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
    • G08B13/2428—Tag details
    • G08B13/2437—Tag layered structure, processes for making layered tags
    • G08B13/244—Tag manufacturing, e.g. continuous manufacturing processes
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
    • G08B13/2428—Tag details
    • G08B13/2437—Tag layered structure, processes for making layered tags
    • G08B13/2442—Tag materials and material properties thereof, e.g. magnetic material details
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/06—Coil winding
    • H01F41/064—Winding non-flat conductive wires, e.g. rods, cables or cords
    • H01F41/069—Winding two or more wires, e.g. bifilar winding
    • H01F41/07—Twisting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/06—Coil winding
    • H01F41/071—Winding coils of special form
    • H01F41/074—Winding flat coils

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Computer Security & Cryptography (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Burglar Alarm Systems (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Transmitters (AREA)

Abstract

1. Oscillatory circuit, for an article to be secured against theft, with a winding (7) formed of an insulated electrical conductor (11) and a capacitor (5) connected in parallel thereto, characterised thereby, that the capacitor (5) is formed by likewise insulated portions (11b, 11c) of the conductor (11) forming the winding (7), which portions adjoin both ends of the winding (7) and are twisted together.
DE8484810433T 1983-09-16 1984-09-07 Resonant circuit for theft protection of articles, method of making such circuits and device for carrying out the method Expired DE3463982D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH504683 1983-09-16

Publications (1)

Publication Number Publication Date
DE3463982D1 true DE3463982D1 (en) 1987-07-02

Family

ID=4287034

Family Applications (2)

Application Number Title Priority Date Filing Date
DE19833337787 Withdrawn DE3337787A1 (en) 1983-09-16 1983-10-18 VIBRATING CIRCUIT FOR A GOODS TO BE SECURED AGAINST THEFT, METHOD FOR THE PRODUCTION OF A VIBRATING CIRCUIT AND DEVICE FOR IMPLEMENTING THE PROCESS
DE8484810433T Expired DE3463982D1 (en) 1983-09-16 1984-09-07 Resonant circuit for theft protection of articles, method of making such circuits and device for carrying out the method

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE19833337787 Withdrawn DE3337787A1 (en) 1983-09-16 1983-10-18 VIBRATING CIRCUIT FOR A GOODS TO BE SECURED AGAINST THEFT, METHOD FOR THE PRODUCTION OF A VIBRATING CIRCUIT AND DEVICE FOR IMPLEMENTING THE PROCESS

Country Status (4)

Country Link
EP (1) EP0136265B1 (en)
AT (1) ATE27507T1 (en)
DE (2) DE3337787A1 (en)
ES (1) ES8600543A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4745401A (en) * 1985-09-09 1988-05-17 Minnesota Mining And Manufacturing Company RF reactivatable marker for electronic article surveillance system
US5592150A (en) * 1994-10-27 1997-01-07 Texas Instruments Incorporated Air coil and method of making the same
US5563582A (en) * 1994-10-28 1996-10-08 Texas Instruments Incorporated Integrated air coil and capacitor and method of making the same
US5781110A (en) * 1996-05-01 1998-07-14 James River Paper Company, Inc. Electronic article surveillance tag product and method of manufacturing same
DE19733360A1 (en) * 1997-08-01 1999-02-04 Leybold Systems Gmbh Circuit to detect presence of electrically conductive substances, e.g. rain
DE10021977A1 (en) * 2000-05-05 2001-11-08 Meto International Gmbh RF security tag has dual wire coil is cheaper with more accurate resonant frequency
DE10050760A1 (en) * 2000-10-13 2002-04-25 Elmag Gmbh Magnetic therapy coil has flat fused layout is flexible and easy to use
KR101771105B1 (en) * 2015-10-23 2017-08-24 주식회사 톰스코 The smart apparatus of coil antenna with rotary moudule
DE102020210516A1 (en) 2020-08-19 2022-02-24 Volkswagen Aktiengesellschaft Conductor arrangement designed as a filter capacitor
CN115798868B (en) * 2022-11-30 2024-07-05 南通市海王电气有限公司 Anti-theft supporting device for outdoor transformer

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1085704A (en) * 1964-10-30 1967-10-04 Nat Res Dev Apparatus for detecting an object
US4187509A (en) * 1977-06-20 1980-02-05 Knogo Corporation Wafer and fastener for use in electronic theft detection system
DE2927866C2 (en) * 1979-07-10 1981-10-08 Siemens AG, 1000 Berlin und 8000 München Process for baking coils with a thermoplastic coating
DE3143208C2 (en) * 1981-10-30 1984-07-05 Max-E. Dipl.-Ing. 7320 Göppingen Reeb Identification arrangement in the form of a label-like strip which can be attached to an object and a method for the production thereof
US4449291A (en) * 1981-11-04 1984-05-22 Loral Corporation Method of making a multiple layer coil winding system

Also Published As

Publication number Publication date
EP0136265A1 (en) 1985-04-03
EP0136265B1 (en) 1987-05-27
ATE27507T1 (en) 1987-06-15
DE3337787A1 (en) 1985-04-04
ES536198A0 (en) 1985-10-16
ES8600543A1 (en) 1985-10-16

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee