Heat sink

Details Heat sink Heat sink

2002-08-09

2004-06-15

Flanigan, Allen (Department: 3743)

Heat exchange

With retainer for removable article

Electrical component

C361S704000

Reexamination Certificate

active

06749011

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a heat sink and, more particularly, to a heat sink in which a plurality of laminas can easily be connected together.
2. Description of Related Art
Heat sinks are widely used for Central Processing Units. As shown in
FIG. 9
, a heat sink includes a plurality of laminas
90
and a tube
96
extending through the laminas
90
. Each of the laminas
90
consists of an upper member and a lower member, with each member having an outer flange
91
formed with a pair of first tenons
93
and an inner flange
92
formed with a second tenon
95
.
The inner flange
92
is situated between a pair of lips
94
, which are below the inner flange
92
for the upper member but above the inner flange
92
for the lower member. The two members of the same lamina
90
can be coupled to each other by connecting the lips
94
of the upper member to those
94
of the lower member. The achieved laminas
90
are then connected together by inserting the tenons
93
,
95
of each lamina
90
into corresponding mortises of the next laminas
90
. As a result of this connection, all of the inner flanges
92
define a channel in which the tube
96
is tightly received.
Although the conventional heat sink can be used to dissipate heat derived from a heat source, its laminas
90
are complex and not easy to be connected together.
OBJECT OF THE INVENTION
The object of the present invention is to provide a heat sink in which a plurality of laminas can easily be connected together.
SUMMARY OF THE INVENTION
The present invention provides a heat sink comprising a plurality of spaced laminas made of a thermally conductive material. Each of the laminas is integrally formed with a pair of convexo-concave spacers that each project from a first face of the lamina and define a cavity in a second face of the same lamina. In addition, each of the convexo-concave spacers is adapted to be partially and tightly fitted in a mating cavity of the next lamina.
Other objects, advantages and novel features of this invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.


REFERENCES:
patent: 5509465 (1996-04-01), Lai

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