Electricity: electrical systems and devices – Housing or mounting assemblies with diverse electrical... – For electronic systems and devices
Reexamination Certificate
1999-11-29
2002-04-02
Gandhi, Jayprakash N. (Department: 2841)
Electricity: electrical systems and devices
Housing or mounting assemblies with diverse electrical...
For electronic systems and devices
C361S816000, C361S818000, C174S034000, C439S607560
Reexamination Certificate
active
06366472
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates generally to electromagnetic interference (EMI) producing devices, and more specifically to EMI inhibiting shields.
2. Background Information
EMI is produced by numerous electronic devices and can affect systems and individual components. Specifically, a microprocessor can produce enough EMI to affect neighboring microprocessors and other circuitry. As the complexity and operating speed of microprocessors increase, the production of EMI increases and significantly impedes the efficient operation of neighboring circuitry. Furthermore, the socket in which a microprocessor is placed can also contribute to the production of EMI.
FIG. 1
shows an example of a prior art apparatus for inhibiting EMI. EMI producing device
10
, such as a microprocessor, is disposed on a substrate
14
, such as a printed circuit board. A cap
12
is placed over EMI producing device
10
to help contain the EMI emanating from device
10
. However, cap
12
by itself does not provide complete containment of EMI. Leaking EMI
16
escapes through the gap between cap
12
and substrate
14
. As device
10
continues to run, the amount of leaking EMI
16
will increase and interfere with neighboring devices and circuitry.
Thus, what is desired is an apparatus and method for providing more complete containment of EMI.
SUMMARY OF THE INVENTION
In one embodiment of the present invention, an enclosure for inhibiting electromagnetic interference (EMI) has protrusions extending from an edge of the enclosure.
Additional features and benefits of the present invention will become apparent from the detailed description, figures and claims set forth below.
REFERENCES:
patent: 4384165 (1983-05-01), Loving, Jr. et al.
patent: 5175395 (1992-12-01), Moore
patent: 5354951 (1994-10-01), Lauge, Sr. et al.
patent: 5365410 (1994-11-01), Lonka
patent: 5414597 (1995-05-01), Lindland et al.
patent: 5583733 (1996-12-01), Cronin
patent: 5895884 (1999-04-01), Davidson
Alina Joseph S.
Raza Ishfaqur
Sharaf Nadir
Blakely , Sokoloff, Taylor & Zafman LLP
Dinh Tuan
Gandhi Jayprakash N.
Intel Corporation
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