Electricity: electrical systems and devices – Housing or mounting assemblies with diverse electrical... – For electronic systems and devices
Reexamination Certificate
2007-01-03
2009-08-18
Reichard, Dean A. (Department: 2841)
Electricity: electrical systems and devices
Housing or mounting assemblies with diverse electrical...
For electronic systems and devices
C174S250000
Reexamination Certificate
active
07577001
ABSTRACT:
A hard disk drive (HDD) includes a disk, a spindle motor assembly for rotating the disk, an arm assembly for reading data from and/or reproducing data onto the disk, integrated circuits (ICs) for controlling the spindle motor and arm assemblies, a printed circuit board (PCB) having integrated circuit (IC) mounting areas on which the ICs are mounted and a through-hole open to at least one of the IC mounting areas and a base to which the spindle motor assembly, arm assembly and PCB are assembled, the base including a heat dissipation column contacting the PCB opposite the IC mounting area so as to transfer heat generated by the IC to the base. The heat dissipation column includes a heat dissipation body and at least one hemispherical protrusion protruding from a surface of the body into the through-hole and into contact with the PCB. The base has a simple structure that is easy to manufacture, and the heat dissipation column of the base does not affect the overall size of the HDD and can effectively dissipate the heat generated by the IC during the operation of the HDD.
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Cho Joo-won
Park Kwang-Hoon
Yun Jong-Yun
Reichard Dean A.
Samsung Electronics Co,. Ltd.
Semenenko Yuriy
Volentine & Whitt PLLC
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