CH673722C1 - Resonant tag and deactivator for elrctronic security system - Google Patents

Resonant tag and deactivator for elrctronic security system Download PDF

Info

Publication number
CH673722C1
CH673722C1 CH387288A CH387288A CH673722C1 CH 673722 C1 CH673722 C1 CH 673722C1 CH 387288 A CH387288 A CH 387288A CH 387288 A CH387288 A CH 387288A CH 673722 C1 CH673722 C1 CH 673722C1
Authority
CH
Switzerland
Prior art keywords
elrctronic
deactivator
security system
resonant tag
resonant
Prior art date
Application number
CH387288A
Other versions
CH673722A5 (en
Inventor
George Jay Lichtblau
Original Assignee
Lichtblau G J
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=34799638&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CH673722(C1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from US06/376,777 external-priority patent/US4498076A/en
Application filed by Lichtblau G J filed Critical Lichtblau G J
Priority to CH387288A priority Critical patent/CH673722C1/en
Publication of CH673722A5 publication Critical patent/CH673722A5/en
Publication of CH673722C1 publication Critical patent/CH673722C1/en

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
    • G08B13/2431—Tag circuit details
    • 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
    • G08B13/2442—Tag materials and material properties thereof, e.g. magnetic material details

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Computer Security & Cryptography (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)
CH387288A 1982-05-10 1984-04-23 Resonant tag and deactivator for elrctronic security system CH673722C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CH387288A CH673722C1 (en) 1982-05-10 1984-04-23 Resonant tag and deactivator for elrctronic security system

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US06/376,777 US4498076A (en) 1982-05-10 1982-05-10 Resonant tag and deactivator for use in an electronic security system
CH1586A CH669858C2 (en) 1982-05-10 1984-04-23
CH387288A CH673722C1 (en) 1982-05-10 1984-04-23 Resonant tag and deactivator for elrctronic security system
PCT/US1984/000613 WO1985004975A1 (en) 1982-05-10 1984-04-23 Resonant tag and deactivator for use in an electronic security system
US06/673,265 US4567473A (en) 1982-05-10 1984-11-20 Resonant tag and deactivator for use in an electronic security system

Publications (2)

Publication Number Publication Date
CH673722A5 CH673722A5 (en) 1990-03-30
CH673722C1 true CH673722C1 (en) 1994-08-31

Family

ID=34799638

Family Applications (1)

Application Number Title Priority Date Filing Date
CH387288A CH673722C1 (en) 1982-05-10 1984-04-23 Resonant tag and deactivator for elrctronic security system

Country Status (1)

Country Link
CH (1) CH673722C1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL9002120A (en) * 1990-09-28 1992-04-16 Nedap Nv PULSE DEACTIVATOR.

Also Published As

Publication number Publication date
CH673722A5 (en) 1990-03-30

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Legal Events

Date Code Title Description
AEN Modification of the scope of the patent
PL Patent ceased