Heat exchange – With retainer for removable article – Electrical component
Patent
1995-11-13
1996-12-03
Leo, Leonard R.
Heat exchange
With retainer for removable article
Electrical component
165121, 165185, 174 163, 257719, 257722, 361697, 361704, F28F 700
Patent
active
055798276
ABSTRACT:
A heat sink arrangement for securing a specific heat sink in thermal contact with a central processing unit. The heat sink arrangement comprises a CPU homing, a finned heat sink and a heat sink holding unit. The CPU housing includes a frame having a square central hole thereon, an securing ring extended upwardly and perpendicularly from the border fringe of the top surface of the frame and having an threaded periphery surface and an inner size larger than the size of the square hole, and a holding means provided underneath the frame for firmly gripping the CPU housing on a CPU. The heat sink has a finned cylindrical upper portion, a square lower portion and a circular supporting rim formed outwardly therebetween. The square lower portion of the heat sink is adapted for inserting into the square hole of the CPU housing for urging upon the top surface of the CPU. The heat sink holding trait has a threaded circular lower portion adapted to screwing onto said threaded periphery surface of the securing ring of the CPU housing, an upper portion having at least two opposite guard lips with inclined end surface protruded inwardly and horizontally from its inner surface, and a supporting ring protruded inwardly between the upper and lower portions so as to define a holding chamber between the guard lips and the supporting ring. The heat sink is firmly held in position by pushing the supporting rim of the heat sink down into the holding chamber with the inclined surfaces of the guard lips acting as guiding surfaces for disposing the supporting rim of the heat sink between the guard lips and the supporting ring.
REFERENCES:
patent: 4345267 (1982-08-01), Corman et al.
patent: 4396935 (1983-08-01), Schuck
patent: 4607685 (1986-08-01), Mitchell, Jr.
patent: 5313099 (1994-05-01), Tata et al.
patent: 5353193 (1994-10-01), Chia et al.
Chan Raymond Y. C.
Leo Leonard R.
US Micro Lab, Inc.
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