Manufacturing methods of magnetomechanical electronic article surveillance markers
First Claim
1. A method of making a magnetomechanical electronic article surveillance marker, comprising:
- providing a substrate layer;
depositing an elongated bias magnet on said substrate layer;
depositing a cavity layer on said substrate layer, said cavity layer defining an elongated cavity adjacent said bias magnet;
placing a magnetomechanical resonator in said cavity; and
, sealing a cover onto said cavity layer wherein said resonator is captured in said cavity and free to mechanically vibrate substantially unencumbered.
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Accused Products
Abstract
A method of making a magnetomechanical electronic article surveillance marker is provided that, in one embodiment, includes deposition or placing of at least one elongated bias magnet onto a substrate, depositing a cavity layer onto the substrate where the cavity layer defines an elongated cavity adjacent the bias magnet. Placing a magnetomechanical resonator into the cavity and sealing a cover onto the cavity layer wherein the resonator is captured in the cavity and free to mechanically vibrate substantially unencumbered. The substrate itself may be magnetic thereby eliminating a separate bias magnet. In an alternate embodiment, a cavity is molded in a plastic substrate sized to fit a resonator, and a cover is sealed to the substrate to capture a resonator in the cavity. At least one bias magnet is placed onto the cover adjacent the cavity and a second cover is sealed to the substrate, to the first cover, and to the bias fixing the bias in place adjacent the cavity.
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Citations
26 Claims
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1. A method of making a magnetomechanical electronic article surveillance marker, comprising:
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providing a substrate layer;
depositing an elongated bias magnet on said substrate layer;
depositing a cavity layer on said substrate layer, said cavity layer defining an elongated cavity adjacent said bias magnet;
placing a magnetomechanical resonator in said cavity; and
,sealing a cover onto said cavity layer wherein said resonator is captured in said cavity and free to mechanically vibrate substantially unencumbered. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of making a magnetomechanical electronic article surveillance marker, comprising:
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providing a substrate layer;
placing an elongated bias magnet on said substrate layer;
depositing a cavity layer on said substrate layer, said cavity layer covering and attaching said bias magnet to said substrate layer and defining an elongated cavity adjacent said bias magnet;
placing a magnetomechanical resonator in said cavity; and
,sealing a cover onto said cavity layer wherein said resonator is captured in said cavity and free to mechanically vibrate unencumbered. - View Dependent Claims (8, 9, 10, 11)
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12. A method of making a magnetomechanical electronic article surveillance marker, comprising:
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providing a magnetizable substrate layer;
depositing a cavity layer on said substrate layer, said cavity layer defining an elongated cavity;
depositing a resonator support member in said cavity;
placing a magnetomechanical resonator in said cavity, said resonator support member being disposed between said resonator and said magnetizable substrate layer; and
,sealing a cover onto said cavity layer wherein said resonator is captured in said cavity and free to mechanically vibrate unencumbered. - View Dependent Claims (13)
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14. A method of making a magnetomechanical electronic article surveillance marker, comprising:
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molding a cavity in a plastic substrate, said cavity sized to receive a magnetomechanical resonator, said substrate sized relatively slightly larger than said magnetomechanical resonator;
placing said magnetomechanical resonator into said cavity;
sealing a first cover layer to said plastic substrate wherein said resonator is captured in said cavity and free to mechanically vibrate unencumbered, said first cover layer being sized larger than said plastic substrate;
placing a bias magnet on said first cover layer adjacent said plastic substrate; and
,sealing a second cover layer to said plastic substrate, to said bias magnet, and to said first cover layer, wherein said bias magnet is held substantially fixed in position relative to said resonator. - View Dependent Claims (15, 16, 17)
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18. A method of making a magnetomechanical electronic article surveillance marker, comprising:
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placing a bias magnet on a plastic substrate;
molding a cavity in said plastic substrate adjacent said bias magnet, said cavity sized to receive a magnetomechanical resonator, said bias magnet being embedded into said plastic substrate substantially simultaneously with said cavity formation;
placing a magnetomechanical resonator into said cavity;
sealing a cover layer to said plastic substrate wherein said resonator is captured in said cavity and free to mechanically vibrate unencumbered. - View Dependent Claims (19, 20, 21)
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22. A method of making a magnetomechanical electronic article surveillance marker, comprising:
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molding a resonator cavity and a bias cavity in a plastic substrate using RF molding, said resonator cavity sized to receive a magnetomechanical resonator, said bias cavity sized to receive a bias magnet;
placing a magnetomechanical resonator into said resonator cavity, and placing a bias magnet into said bias cavity;
sealing a cover layer to said plastic substrate wherein said resonator is captured in said cavity and free to mechanically vibrate unencumbered and said bias magnet is retained in a substantially fixed position. - View Dependent Claims (23, 24)
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25. A magnetomechanical electronic article surveillance marker, comprising:
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an EAS marker housing having a cavity sized to receive a magnetomechanical resonator, said magnetomechanical resonator disposed in said cavity;
a cover sealed to said housing and capturing said resonator within said cavity;
a bias magnet disposed adjacent said resonator;
said housing including a relatively flexible portion adjacent said cavity, said flexible portion adapted to bend around a curved surface to facilitate attaching the marker to the curved surface. - View Dependent Claims (26)
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Specification