The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 01, 1987
Filed:
Jun. 23, 1986
Theodoor A Kleijne, Dreumel, NL;
Jan B Goossens, De Bilt, NL;
NCR Corporation, Dayton, OH (US);
Abstract
A security device (10) contains electronic circuitry (84) including a resettable memory (110) which stores sensitive data. The device (10) includes a housing (11) formed by six ceramic plates (P1-P6) each having provided thereon a pair of serially connected conductive path segments formed in separate, superposed layers and arranged in complementary winding configurations. Between the conductive path segments is disposed a conductive sheet. The conductive path segments are serially interconnected by interconnection blocks (N1-N7) and the conductive sheets are serially interconnected by further interconnection blocks (N8-N14). If an attempt to penetrate the housing results in either of the conductive path segments being interrupted or shorted to the conductive sheet, a reset signal is generated to reset the resettable memory (110) thereby erasing the sensitive data stored therein.