Methods and apparatus for security device removal detection
First Claim
1. A security device that detects removal of the device from a provided surface, the security device comprising:
- a body;
at least one magnet coupled to the body; and
a sensor coupled to the body proximate to at least one of the at least one magnet;
wherein;
the sensor does not move with respect to the at least one magnet;
the at least one magnet provides a magnetic flux;
magnetically coupling the at least one magnet to the surface conducts at least a portion of the magnetic flux away from the sensor; and
decoupling the at least one magnet from the surface conducts at least a portion of the magnetic flux through the sensor thereby indicating removal of the body from the surface.
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Accused Products
Abstract
A security device, according to various aspects of the present invention, detects removal of the device from a provided surface. The security device includes a body; at least one magnet coupled to the body; and a sensor coupled to the body proximate to at least one of the at least one magnet. The sensor does not move with respect to the at least one magnet. The at least one magnet magnetically couples the body to the surface. Each one magnet provides a magnetic flux. When the body couples to the surface, at least a portion of the magnetic flux conducts away from the sensor. When the body is not coupled to the surface, at least a portion of the magnetic flux from at least one magnet of the at least one magnet conducts through the sensor thereby indicating removal of the body from the surface.
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Citations
27 Claims
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1. A security device that detects removal of the device from a provided surface, the security device comprising:
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a body; at least one magnet coupled to the body; and a sensor coupled to the body proximate to at least one of the at least one magnet;
wherein;the sensor does not move with respect to the at least one magnet; the at least one magnet provides a magnetic flux; magnetically coupling the at least one magnet to the surface conducts at least a portion of the magnetic flux away from the sensor; and decoupling the at least one magnet from the surface conducts at least a portion of the magnetic flux through the sensor thereby indicating removal of the body from the surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A removal detector that detects the removal of a provided security device from a provided surface, the detector comprising:
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at least one magnet; and a sensor positioned proximate to at least one of the at least one magnet;
wherein;the at least one magnet couples to the security device; the sensor couples to the security device; the sensor does not move with respect to the at least one magnet; the at least one magnet provides a magnetic flux; magnetically coupling the at least one magnet to the surface conducts at least a portion of the magnetic flux away from the sensor; and decoupling the at least one magnet from the surface conducts at least a portion of the magnetic flux through the sensor thereby indicating removal of the security device from the surface. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A security device that detects removal of the device from at least one of a first portal cover and a second portal cover, the security device comprising:
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a body; a first removal detector; and a second removal detector;
wherein;the first removal detector magnetically couples the body to the first cover; the second removal detector magnetically couples the body to the second cover; the first removal detector detects removal of the body from the first cover; the second removal detector detects removal of the body from the second cover; at least one of the first removal detector and the second removal detector includes; at least one magnet; and a sensor positioned proximate to at least one of the at least one magnet;
wherein;the sensor does not move with respect to the at least one magnet; each one magnet provides a magnetic flux; magnetically coupling the at least one magnet to at least one of the first portal cover and the second portal cover conducts at least a portion of the magnetic flux away from the sensor; and decoupling the at least one magnet from at least one of the first portal cover and the second portal cover conducts at least a portion of the magnetic flux through the sensor thereby indicating removal of the security device.
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23. A method performed by a security device for detecting removal of the security device from a surface, the device having a body, the method comprising:
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detecting a change in a magnitude of a magnetic flux through a sensor; and providing a signal in accordance with detecting;
wherein;at least one magnet couples to the body of the security device; the sensor couples to the body proximate to at least one magnet of the at least one magnet; the sensor does not move with respect to the at least one magnet; each at least one magnet provides a magnetic flux; magnetically coupling the at least one magnet to the surface conducts at least a portion of the magnetic flux away from the sensor; and decoupling the at least one magnet from the surface conducts at least a portion of the magnetic flux through the sensor thereby indicating removal of the security device. - View Dependent Claims (24, 25, 26)
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27. A removal detector that detects the removal of a provided security device from a provided surface, the detector comprising:
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at least one magnet; and a sensor positioned proximate to at least one of the at least one magnet;
wherein;the at least one magnet couples to the security device; the sensor couples to the security device; the sensor and the at least one magnet do not move with respect to each other; the at least one magnet provides a magnetic flux; magnetically coupling the at least one magnet to the surface conducts at least a portion of the magnetic flux through the surface away from the sensor; and
decoupling the at least one magnet from the surface conducts at least a portion of the magnetic flux through the sensor thereby indicating removal of the security device.
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Specification