Electricity: electrical systems and devices – Safety and protection of systems and devices – Circuit interruption by thermal sensing
Reexamination Certificate
2011-01-18
2011-01-18
Jackson, Stephen W (Department: 2836)
Electricity: electrical systems and devices
Safety and protection of systems and devices
Circuit interruption by thermal sensing
Reexamination Certificate
active
07872843
ABSTRACT:
The present invention provides highly efficient system level EMI filtering in a dual feed Power Distribution Unit (PDU) using custom designed magnetic components that are uniquely designed to provide excellent performance under various load conditions. The PDU of the present invention includes filters for providing the necessary EMI filtering at all frequencies in the range between 200 Hz and 200 MHz under all load conditions including a single feed failure. Additionally, the present invention provides mechanisms for cooling EMI components using a combination of natural convection and conduction techniques at the board level to ensure no loss of EMI filtering performance. The present invention also includes blank panels made of formed Aluminum alloy sheet metal pieces or the like to direct air flow to components on printed wiring boards (PWB's) using air director plates.
REFERENCES:
patent: 5223806 (1993-06-01), Curtis et al.
patent: 5293145 (1994-03-01), Rynkiewicz
patent: 6937454 (2005-08-01), Mikolajczak et al.
patent: 7495525 (2009-02-01), Ilkov et al.
Brown Michael Stephen
Harris David Bennitt
Hobbs Richard
Keys Curtis
McGill, Sr. Terrence Michael
Bernard Christopher L.
Brown Tyler S.
Ciena Corporation
Clements Bernard PLLC
Jackson Stephen W
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