US4846922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making deactivatable tags
Assignee: Sensormatic Electronics Corp
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Filing: 1987-11-24
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Granted: 1989-07-11
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Expires: 2007-11-24
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 tags 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. A film of electrostatic-charge-draining material on a web of deactivatable tags prevents their premature deactivation.
Inventors
- 👤 S. Eugene Benge
- 👤 Robert L. Froning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:45
CPC Classifications
G; G08; G08B; G08B13/00; G08B13/22; G08B13/24; G08B13/2402; G08B13/2405; G08B13/2414; G08B13/242; G06; G06K; G06K19/00; G06K19/06; G06K19/067; G06K19/0672; G08B13/2428; G08B13/2437; G08B13/244; G08B13/2442; H; H01; H01F; H01F41/00; H01F41/02; H01F41/04; H01F41/041; H05; H05K; H05K3/00; H05K3/02; H05K3/04; H05K3/046; H05K3/10; H05K3/20; H05K3/202; H10; H10D; H10D84/00; H10D84/01; H05K1/00; H05K1/16; H05K1/165; H05K2203/00; H05K2203/05; H05K2203/0502; H05K2203/0522; H05K2203/15; H05K2203/1545
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
76 words
Method of making deactivatable tags for use in an electronic article surveillance system, comprising the steps of: forming a longitudinally extending web of a connected series of tags by using a continuous supporting web with each tag having a detectable resonant circuit on the supporting web and a deactivator, and applying a continuous longitudinally extending web of conductive material to the supporting web along the series of tags to help prevent circuit deactivation from electrostatic discharge.
Claim 2
Dependent Claim
76 words
Method of making deactivatable tags for use in an electronic article surveillance system, comprising the steps of: forming a longitudinally extending web of a connected series of tags by using a continuous supporting web with each tag having a detectable resonant circuit on the supporting web and a deactivator, and applying a continuous longitudinally extending web of conductive material to the supporting web along the series of tags to help prevent circuit deactivation from electrostatic discharge.
Claim 3
Dependent Claim
77 words
Method of making deactivatable tags for use in an electronic article surveillance system, comprising the steps of: forming a longitudinally extending web of a connected series of tags by using a continuous supporting web with each tag having a detectable resonant circuit on the supporting web and a deactivator, and applying a continuous longitudinally extending film of electrostatic-charge-draining material to the supporting web along the series of tags to help prevent circuit deactivation caused by electrostatic discharge.
Claim 4
Dependent Claim
77 words
Method of making deactivatable tags for use in an electronic article surveillance system, comprising the steps of: forming a longitudinally extending web of a connected series of tags by using a continuous supporting web with each tag having a detectable resonant circuit on the supporting web and a deactivator, and applying a continuous longitudinally extending film of electrostatic-charge-draining material to the supporting web along the series of tags to help prevent circuit deactivation caused by electrostatic discharge.
Claim 5
Dependent Claim
77 words
Method of making deactivatable tags for use in an electronic article surveillance system, comprising the steps of: forming a longitudinally extending web of a connected series of tags by using a continuous supporting web with each tag having a detectable resonant circuit on the supporting web and a deactivator, and applying a continuous longitudinally extending coating of conductive material to the supporting web along the series of tags to help prevent circuit deactivation caused by electrostatic discharge.
Claim 6
Dependent Claim
77 words
Method of making deactivatable tags for use in an electronic article surveillance system, comprising the steps of: forming a longitudinally extending web of a connected series of tags by using a continuous supporting web with each tag having a detectable resonant circuit on the supporting web and a deactivator, and applying a continuous longitudinally extending coating of conductive material to the supporting web along the series of tags to help prevent circuit deactivation caused by electrostatic discharge.
Claim 7
Dependent Claim
82 words
Method of making deactivatable tags for use in an electronic article surveillance system, comprising the steps of: forming a longitudinally extending web of a connected series of tags by using a continuous supporting web with each tag having a detectable resonant circuit on the supporting web and a deactivator, and coating a continuous longitudinally extending film of antistatic material on the supporting web along the series of tags in sufficient amount and concentration to help prevent circuit deactivation caused by electrostatic discharge.
Claim 8
Dependent Claim
82 words
Method of making deactivatable tags for use in an electronic article surveillance system, comprising the steps of: forming a longitudinally extending web of a connected series of tags by using a continuous supporting web with each tag having a detectable resonant circuit on the supporting web and a deactivator, and coating a continuous longitudinally extending film of antistatic material on the supporting web along the series of tags in sufficient amount and concentration to help prevent circuit deactivation caused by electrostatic discharge.
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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) | 1992-07-10 | 1993-01-09 | 1993-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-10 | 1997-01-09 | 1997-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-10 | 2001-01-09 | 2001-07-11 | $7700.00 | Window Closed / Lapsed |