CA2217722A1 - Metallic glass alloys for mechanically resonant marker surveillance systems - Google Patents

Metallic glass alloys for mechanically resonant marker surveillance systems

Info

Publication number
CA2217722A1
CA2217722A1 CA002217722A CA2217722A CA2217722A1 CA 2217722 A1 CA2217722 A1 CA 2217722A1 CA 002217722 A CA002217722 A CA 002217722A CA 2217722 A CA2217722 A CA 2217722A CA 2217722 A1 CA2217722 A1 CA 2217722A1
Authority
CA
Canada
Prior art keywords
ranges
marker
surveillance systems
metallic glass
harmonic
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.)
Granted
Application number
CA002217722A
Other languages
French (fr)
Other versions
CA2217722C (en
Inventor
Ryusuke Hasegawa
Ronald Martis
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.)
Tyco Fire and Security GmbH
Original Assignee
Alliedsignal Inc.
Ryusuke Hasegawa
Ronald Martis
Sensormatic Electronics Corporation
Tyco Acquisition Corp. Xxiv
Sensormatic Electronics, LLC
Adt Services Gmbh
Tyco Fire & Security Gmbh
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
Priority claimed from US08/421,109 external-priority patent/US5495231A/en
Priority claimed from US08/471,056 external-priority patent/US5539380A/en
Application filed by Alliedsignal Inc., Ryusuke Hasegawa, Ronald Martis, Sensormatic Electronics Corporation, Tyco Acquisition Corp. Xxiv, Sensormatic Electronics, LLC, Adt Services Gmbh, Tyco Fire & Security Gmbh filed Critical Alliedsignal Inc.
Publication of CA2217722A1 publication Critical patent/CA2217722A1/en
Application granted granted Critical
Publication of CA2217722C publication Critical patent/CA2217722C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V15/00—Tags attached to, or associated with, an object, in order to enable detection of the object
    • 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
    • G08B13/2408—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 ferromagnetic 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
    • H01F1/147—Alloys characterised by their composition
    • H01F1/153—Amorphous metallic alloys, e.g. glassy metals
    • H01F1/15316—Amorphous metallic alloys, e.g. glassy metals based on Co

Abstract

A glassy metal alloy consists essentially of the formula Co a Fe b Ni c M d B e S if C g, where M is selected from molybdenum and chromium and "a", "b", "c", "d", "e" "f"
and "g" are in atom percent, "a"
ranges from about 40 to about 43, "b" ranges from about 35 to about 42 and "c" ranges from 0 to about 5, "d" ranges from 0 to about 3, "e" ranges from about to about 25, "f" ranges from 0 to about 15 and "g" ranges from 0 to about 2. The alloy can be cast by rapid solidification into ribbon, annealed to enhance magnetic properties thereof, and formed into a marker that is especially suited for use in magneto-mechanically actuated article surveillance systems.
Advantageously, the marker is characterized by relatively linear magnetization response in the frequency regime wherein harmonic marker systems operate magnetically. Voltage amplitudes detected for the marker are high, and interference between surveillance systems based on mechanical resonance and harmonic re-radiance is virtually eliminated.
CA002217722A 1995-04-13 1996-04-12 Metallic glass alloys for mechanically resonant marker surveillance systems Expired - Fee Related CA2217722C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US08/421,109 US5495231A (en) 1995-04-13 1995-04-13 Metallic glass alloys for mechanically resonant marker surveillance systems
US08/471,056 1995-06-06
US08/471,056 US5539380A (en) 1995-04-13 1995-06-06 Metallic glass alloys for mechanically resonant marker surveillance systems
US08/421,109 1995-06-06
PCT/US1996/005090 WO1996032731A1 (en) 1995-04-13 1996-04-12 Metallic glass alloys for mechanically resonant marker surveillance systems

Publications (2)

Publication Number Publication Date
CA2217722A1 true CA2217722A1 (en) 1996-10-17
CA2217722C CA2217722C (en) 2007-07-03

Family

ID=38249308

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002217722A Expired - Fee Related CA2217722C (en) 1995-04-13 1996-04-12 Metallic glass alloys for mechanically resonant marker surveillance systems

Country Status (1)

Country Link
CA (1) CA2217722C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110072930A1 (en) * 2009-09-29 2011-03-31 Kuka Roboter Gmbh Industrial Robot With A Weight Counterbalance System

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110938785B (en) * 2019-12-10 2022-03-15 大连理工大学 Co-based bulk amorphous alloy with soft magnetic property

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110072930A1 (en) * 2009-09-29 2011-03-31 Kuka Roboter Gmbh Industrial Robot With A Weight Counterbalance System
US10987817B2 (en) * 2009-09-29 2021-04-27 Kuka Deutschland Gmbh Industrial robot with a weight counterbalance system

Also Published As

Publication number Publication date
CA2217722C (en) 2007-07-03

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Legal Events

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EEER Examination request
MKLA Lapsed

Effective date: 20160412