Secure enclosure with continuous monitoring
First Claim
Patent Images
1. A load sensing assembly for sensing loads applied at a plurality of spaced locations around the perimeter of a closure, the sensing assembly comprising:
- a plurality of spaced load sensors disposed on a substrate, with one of said load sensors adapted to be positioned proximate each of said spaced locations; and
a layer of a compliant elastomeric material disposed on said sensing assembly and overlying each load sensor.
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Abstract
A load sensing assembly for sensing loads applied at a plurality of spaced locations around the perimeter of a closure employs a plurality of spaced load sensors disposed on a substrate, with one of the load sensors adapted to be positioned proximate each of the spaced locations, and a layer of a compliant elastomeric material disposed on the sensing assembly and overlying each load sensor.
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Citations
23 Claims
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1. A load sensing assembly for sensing loads applied at a plurality of spaced locations around the perimeter of a closure, the sensing assembly comprising:
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a plurality of spaced load sensors disposed on a substrate, with one of said load sensors adapted to be positioned proximate each of said spaced locations; and a layer of a compliant elastomeric material disposed on said sensing assembly and overlying each load sensor. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A pressure sensitive load sensing assembly for sensing loads applied at a plurality of spaced locations around the perimeter of a closure, the assembly comprising:
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a plurality of spaced pressure sensitive load sensors, one for each of said spaced locations, each load sensor comprising a pair of electrodes and a body of pressure sensitive resistive material between them, one electrode of each said pair being on the inner surface of a first insulative substrate and the second electrode of each said pair being on an inner surface of a second insulative substrate, a common conductive trace connecting all of said first electrodes, and separate conductive traces for each of said second electrodes, and a terminal for each of said traces; and a layer of a compliant elastomeric material disposed on an outer surface of one of said substrates and overlying each of said load sensors. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A sensor array for detecting tampering with the interior of an enclosure and cover assembly that are secured by a plurality of discrete fasteners, the sensor array comprising:
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a first substrate having a plurality of first electrodes disposed thereon, with each of said first electrodes disposed in proximity to one of said discrete fasteners, and each of said first electrodes having a separate conductive trace extending therefrom; a second substrate having a plurality of second electrodes disposed thereon, said second substrate overlying said first substrate such that each of said second electrodes confronts one of said first electrodes, and wherein each of said second electrodes shares a common conductive trace extending therefrom; pressure sensitive resistive material disposed between confronting surfaces of each of said pairs of first and second electrodes thereby to form a plurality of load sensors between the inner surfaces of said substrates; and compliant elastomeric material layer disposed on the outer surface of one of said substrates and overlying said load sensors. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22)
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23. A tamper-proof secure enclosure assembly comprising:
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an enclosure, a cover secured to said enclosure by fasteners, and a sensor array; said sensor array comprising a first substrate having a plurality of first electrodes disposed thereon, with each of said first electrodes disposed in proximity to one of said discrete fasteners, and each of said first electrodes having a separate conductive trace extending therefrom, a second substrate having a plurality of second electrodes disposed thereon, said second substrate overlying said first substrate such that each of said second electrodes confronts one of said first electrodes, and wherein each of said second electrodes shares a common conductive trace extending therefrom, pressure sensitive resistive material disposed between confronting surfaces of each of said pairs of first and second electrodes thereby to form a plurality of load sensors between the inner surfaces of said substrates and compliant elastomeric material layer disposed on the outer surface of one of said substrates and overlying said load sensors; and means within the enclosure for electrically connecting said traces to means for measuring the electrical resistance of each of said plurality of load sensors.
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Specification