Electricity: electrical systems and devices – Housing or mounting assemblies with diverse electrical... – For electronic systems and devices
Reexamination Certificate
1999-08-10
2001-10-02
Gaffin, Jeffrey (Department: 2841)
Electricity: electrical systems and devices
Housing or mounting assemblies with diverse electrical...
For electronic systems and devices
C361S816000, C361S752000, C361S800000
Reexamination Certificate
active
06297969
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an electromagnetic interference (EMI) shielding enclosure. More particularly, the present invention relates to an easily accessible EMI shielding enclosure having improved EMI shielding attributes.
2. Description of the Background Art
Numerous electrical components are sensitive to EMI fields. Electrical components operating at radio frequencies can be especially sensitive to EMI. Also, numerous electrical components are noisy and generate unwanted EMI fields as a by-product. Typically, such sensitive components and noisy components are housed in respective special enclosures and hence separated from other electrical components. The special enclosures shield the electrical components from receiving and transmitting EMI fields.
To date, various structures of EMI shielding enclosures have been proposed. The typical structure of the enclosure includes an open, box-type base and a lid for covering the base. The lid and base are formed of electrically conductive material, such as sheet steel, and are held together by a plurality of snap fasteners, solder joints, or one or more screws. Such typical EMI shielding enclosures require tools, such as screwdrivers or nutdrivers, to remove the fasteners, or complex tools to simultaneously hold in a plural of snap fasteners so that the lid can be removed from the base.
Such EMI shielding enclosures are successful at attenuating the majority of EMI fields. However, there is a need in the art for an improved EMI shielding enclosure which is easy to open and close to reduce the costs associated with assembling and accessing the EMI shielding enclosure. Furthermore, there is a need in the art for an EMI shielding enclosure which exhibits improved EMI attenuation characteristics.
SUMMARY OF THE INVENTION
Accordingly, it is an object of the present invention to provide an EMI shielding enclosure which is easy to open and close and does not require the use of tools to accomplish the task.
Another object of the present invention is to provide an EMI shielding enclosure which exhibits improved shielding characteristics, so as to exhibit a high degree of EMI attenuation.
Further scope of applicability of the present invention will become apparent from the detailed description given hereinafter. However, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description.
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Gaffin Jeffrey
Lucent Technologies - Inc.
Vu Phuong T.
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