Electricity: electrical systems and devices – Housing or mounting assemblies with diverse electrical... – For electronic systems and devices
Reexamination Certificate
2006-04-20
2008-03-18
Thompson, Gregory D (Department: 2835)
Electricity: electrical systems and devices
Housing or mounting assemblies with diverse electrical...
For electronic systems and devices
C024S457000, C024S458000, C248S505000, C248S510000, C257S719000, C165S080300, C165S185000, C361S710000, C361S719000
Reexamination Certificate
active
07345881
ABSTRACT:
A load frame has an open region exposing a surface of an electronic component. A heat sink is disposed on the load frame and has a surface in thermal contact with the surface of the electronic component. A non-influencing fastener is disposed within a bore in the heat sink and threaded into the load frame for securing the heat sink to the load frame. The non-influencing fastener includes a screw with a head; a tapered ring disposed below the head of the screw and having a tapered lower peripheral surface; a sealing ring engaging the tapered lower peripheral surface of the tapered ring; and a load washer disposed between the sealing ring and the load frame. Compression of the rings by turning of the screw into the load frame causes the sealing ring to expand against the bore of the heatsink. Preferably, the sealing ring has a curved outer surface.
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Colbert John Lee
Corbin, Jr. John Saunders
Eckberg Eric Alan
Gerken James Dorance
Hamilton Roger Duane
International Business Machines - Corporation
Thompson Gregory D
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