US4818312A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making electronic tags
Assignee: Sensormatic Electronics Corp
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Filing: 1987-10-28
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Granted: 1989-04-04
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Expires: 2007-10-28
Abstract
Abstract This invention relates to a deactivatable tag useable with an electronic article surveillance system and comprised of planar conductive material cut into a pair of inverse, first and second spiral conductors wrapped about each other and positioned for capacitive and inductive coupling. The invention also relates to method of making tage wherein conductors are cut from a planar web of conductive material in a continuous process in a manner that the cutting results in the formation of two spiral conductors without accompanying waste of conductive material, and thereafter positioning the conductors to provide resonant circuits. The conductors of each pair are connected by welding to provide a reliable circuit.
Inventors
- 👤 S. Eugene Benge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:53
CPC Classifications
B; B32; B32B; B32B38/00; B32B38/0004; G; G06; G06K; G06K19/00; G06K19/06; G06K19/067; G06K19/0672; G08; G08B; G08B13/00; G08B13/22; G08B13/24; G08B13/2402; G08B13/2405; G08B13/2414; G08B13/242; G08B13/2428; G08B13/2437; G08B13/244; G08B13/2442; H; H05; H05K; H05K3/00; H05K3/02; H05K3/04; H05K3/046; H05K3/10; H05K3/20; H05K3/202; H10; H10D; H10D84/00; H10D84/01; B32B2519/00; B32B2519/02; B32B38/10; H05K1/00; H05K1/16; H05K1/165; H05K2203/00; H05K2203/05; H05K2203/0502; H05K2203/0522; H05K2203/15; H05K2203/1545; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/108; Y10T156/1084; Y10T29/00; Y10T29/49; Y10T29/49002
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
80 words
Method of making tags for use in an electronic article surveillance system, comprising the steps of: providing a web having a series of first conductors, providing another web having a series of second conductors, positioning the webs so that the first and second conductors of each pair are spaced apart by dielectric material, and using a laser beam to weld adjacent portions of the first and second conductors of each pair so that each pair provides a detectable resonant circuit.
Claim 2
Dependent Claim
80 words
Method of making tags for use in an electronic article surveillance system, comprising the steps of: providing a web having a series of first conductors, providing another web having a series of second conductors, positioning the webs so that the first and second conductors of each pair are spaced apart by dielectric material, and using a laser beam to weld adjacent portions of the first and second conductors of each pair so that each pair provides a detectable resonant circuit.
Claim 3
Dependent Claim
69 words
Method of making tags for use in an electronic article surveillance system, comprising the steps of: providing a series of pairs of first and second conductors spaced apart by dielectric material, with each first and second conductor having a connector portion free of dielectric material, and using a laser beam to weld the connector portions of each pair to each other to provide a series of detectable resonant circuits.
Claim 4
Dependent Claim
69 words
Method of making tags for use in an electronic article surveillance system, comprising the steps of: providing a series of pairs of first and second conductors spaced apart by dielectric material, with each first and second conductor having a connector portion free of dielectric material, and using a laser beam to weld the connector portions of each pair to each other to provide a series of detectable resonant circuits.
Claim 5
Dependent Claim
68 words
Method of making tags for use in an electronic article surveillance system, comprising the steps of: providing a series of pairs of first and second conductors spaced apart by dielectric material and adhesively attached, with each first and second conductors having a connector portion free of dielectric material and free of adhesive, and welding the connector portions to each other to provide a series of detectable resonant circuits.
Claim 6
Dependent Claim
68 words
Method of making tags for use in an electronic article surveillance system, comprising the steps of: providing a series of pairs of first and second conductors spaced apart by dielectric material and adhesively attached, with each first and second conductors having a connector portion free of dielectric material and free of adhesive, and welding the connector portions to each other to provide a series of detectable resonant circuits.
Claim 7
Dependent Claim
147 words
Method of making tags for use in an electronic article surveillance system, comprising the steps of: providing a web having a series of first conductors, providing another web having a series of second conductors, wherein at least one of the conductors is a spiral conductor, depositing welding material on each conductor of one of said series, positioning a deactivator adjacent one conductor of one of said series, wherein the deactivator includes heat activatable material rendered conductive by the application of heat, positioning the webs so that the first and second conductors are in adjacent pairs spaced apart by dielectric material to provide a tag web, and applying heat to the tag web at a temperature high enough to cause the welding material to weld the conductors to each other to provide a detectable resonant circuit but low enough to prevent the activatable material from being rendered conductive.
Claim 8
Dependent Claim
147 words
Method of making tags for use in an electronic article surveillance system, comprising the steps of: providing a web having a series of first conductors, providing another web having a series of second conductors, wherein at least one of the conductors is a spiral conductor, depositing welding material on each conductor of one of said series, positioning a deactivator adjacent one conductor of one of said series, wherein the deactivator includes heat activatable material rendered conductive by the application of heat, positioning the webs so that the first and second conductors are in adjacent pairs spaced apart by dielectric material to provide a tag web, and applying heat to the tag web at a temperature high enough to cause the welding material to weld the conductors to each other to provide a detectable resonant circuit but low enough to prevent the activatable material from being rendered conductive.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-04-03 | 1992-10-03 | 1993-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-03 | 1996-10-03 | 1997-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-03 | 2000-10-03 | 2001-04-04 | $7700.00 | Window Closed / Lapsed |