Browse Prior Art Database

Ground Bracket with Dual Multiple Contacts

IP.com Disclosure Number: IPCOM000105248D
Original Publication Date: 1993-Jul-01
Included in the Prior Art Database: 2005-Mar-19
Document File: 2 page(s) / 57K

Publishing Venue

IBM

Related People

Barina, RM: AUTHOR [+4]

Abstract

Described is a hardware implementation of a ground bracket to provide dual multiple contacts with a system base housing, as applied to personal computer systems.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 82% of the total text.

Ground Bracket with Dual Multiple Contacts

      Described is a hardware implementation of a ground bracket to
provide dual multiple contacts with a system base housing, as applied
to personal computer systems.

      Typically, electromagnetic interference (EMI) is caused by
undesired electrical noise that degrades the performance of nearby
electronic components.  Electromagnetic compatibility (EMC) is the
ability of having electronic equipment limit the sensitivity and the
generation of excessive electrically interfering signals.  Generally,
due to increased clocking speeds, additional shielding and grounding
is required to provide enhanced EMC.

      The described concept is designed to provide a grounding
bracket with dual multiple contacts that will be self cleaning so as
to remove oxidation and contamination which could degrade EMC
grounding.  The figure shows the inside rear of a system housing.
The dual multiple ground brackets 10 are mounted directly to
electronic planar assembly 11 near connectors 12.  Hex-headed
standoffs (not shown) are used to positively secure the brackets to
planar assembly 11.  The planar assembly is installed into the frame
and the multiple contact surfaces of brackets 10 are spring loaded to
insure an interference condition on the rear panel and frame.  The
bracket contacts wipe the mating surface so as to remove any
oxidation or contaminants which would degrade EMC ground contact.
The bracket contacts are staggered on b...