Electricity: electrical systems and devices – Safety and protection of systems and devices – Arc suppression at switching point
Patent
1991-12-30
1993-08-03
Donovan, Lincoln
Electricity: electrical systems and devices
Safety and protection of systems and devices
Arc suppression at switching point
361743, 361744, 361809, 361684, 439 43, 439 74, 439 75, H01R 2368, H01R 2900, H05K 714
Patent
active
052335054
ABSTRACT:
A security device for protecting electronically-stored data comprising a protected circuit board which has a memory device for storing data code and a battery, a plurality of protective circuit boards respectively overlaid on each side of the protected circuit board, and a plurality of connectors connected between the protected circuit board and the protective circuit boards, wherein the printed circuit on each protective circuit board is respectively connected to the printed circuit on the protected circuit board forming into a series electronic circuit. Detaching either protective circuit board from said protected circuit board or damaging either protective circuit board will break the series electronic circuit causing any code data stored in the memory device to be erased.
REFERENCES:
IBM Disclosure Bulletin "Multiple Electronic Board Interconnect System" vol. 33, No. 3B, Aug. 1990.
Chang Yeng-Ming
Chun Wing-Fai
Chang Yeng-Ming
Donovan Lincoln
Sparks D.
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