Electricity: electrical systems and devices – Housing or mounting assemblies with diverse electrical... – For electronic systems and devices
Reexamination Certificate
2008-05-27
2008-05-27
Reichard, Dean A. (Department: 2841)
Electricity: electrical systems and devices
Housing or mounting assemblies with diverse electrical...
For electronic systems and devices
C361S800000, C361S816000, C361S694000, C361S695000
Reexamination Certificate
active
11405381
ABSTRACT:
EMI from an operating information handling system is managed by disposing a stirring device in the chassis of the information handling system to mechanically modulate the resonance of predetermined RF signals emitted from processing components within the chassis. For example, a cooling fan disposed in the chassis has a reflective surface formed on its blades so that rotation of the blades mechanically modulates the RF signals. The blades have a depth of at least one-quarter of the wavelength of the RF signal and are coated with a low resistance material, such as steel, aluminum, copper, carbon loaded plastic or a high dielectric ceramic. The fan rotates at the faster of the speed required to provide desired cooling or the speed desired to produce a desired average RF signal amplitude.
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Hailey Jeffrey C.
McCormick Raymond A.
Stivers Daniel E.
Dell Products L.P.
Hamilton & Terrille, LLP
Holland Robert W.
Levi Dameon E
Reichard Dean A.
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