Browse Prior Art Database

Tamper Evident Cover Mechanism

IP.com Disclosure Number: IPCOM000110056D
Original Publication Date: 1992-Oct-01
Included in the Prior Art Database: 2005-Mar-25
Document File: 3 page(s) / 80K

Publishing Venue

IBM

Related People

Barina, RM: AUTHOR [+3]

Abstract

Described is an electro-mechanical mechanism that detects when a physical cover of a system has been forced open without the use of a key. The mechanism is designed to interrupt electrical connections when the cover has been forced open.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 88% of the total text.

Tamper Evident Cover Mechanism

       Described is an electro-mechanical mechanism that detects
when a physical cover of a system has been forced open without the
use of a key.  The mechanism is designed to interrupt electrical
connections when the cover has been forced open.

      The mechanism uses a device that is built into the covers of a
system to protect the user from dangerous electrical components
and/or to protect the electrical components from unauthorized access.
Two micro-switches mechanically and symmetrically positioned in a
card guide are used at the base of the system.  A unique horizontal
plastic device is designed into the cover that protrudes through the
cover to enable micro-switch levers located into the base of the
system to be actuated when the cover is secured in place.  Two
plastic angular ramps are provided within the plastic device to
enable service personnel to insert a reset knob when servicing is
required.

      Fig. 1 is an isometric view of the mechanism as viewed with the
base and the cover removed.  Two micro-switches 10, card guide 11 and
reset lever 12 are shown.  Reset lever 12 is controlled by a separate
service knob (not shown).

      Fig. 2 is an isometric view similar to Fig. 1 but includes a
view of base 13 of the system unit to be protected from tampering and
reset lever 12 in its non-operational position.

      Fig. 3 is an isometric view from the inside rear of the system
unit without the base and c...