Heat sink

Details Heat sink Heat sink

2002-10-16

2003-11-25

Flanigan, Allen (Department: 3743)

Heat exchange

With retainer for removable article

Electrical component

C165S104330, C361S704000, C361S700000, C257S719000

Reexamination Certificate

active

06651733

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 of improved efficiency in which a plurality of fins can be manufactured easily.
2. Description of Related Art
Heat sinks are widely used for CPU (Central Processing Units). As shown in
FIG. 5
, an existing heat sink includes a plurality of fins
90
and a tube
96
extending through the fins
90
. Each of the fins
90
consists of an upper half and a lower half, with each half 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 half but above the inner flange
92
for the lower half. The two halves of the same fin
90
can be coupled to each other by connecting the lips
94
of the upper half to those
94
of the lower half. The resulting fins
90
are then connected together by inserting the tenons
93
,
95
of each fin
90
into corresponding mortises of the next fins
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, its fins
90
are complex and hard to be manufactured. It has been also found that this heat sink is not as efficient as desired in dissipating heat .
OBJECTS OF THE INVENTION
The object of the present invention is to provide a heat sink in which a plurality of fins can be manufactured easily.
Another object of the present invention is to provide a heat sink which has an improved efficiency in dissipating heat.
SUMMARY OF THE INVENTION
The present invention provides a heat sink comprising a plurality of fins made of a heat-conductive material. Each of the fins has at least one coupler integrally formed on an edge thereof. The coupler has a first bent plate extending forward from the fin and a second bent plate extending backward from the fin. The first and second bent plates lie in two parallel planes apart away at a predetermined perpendicular distance. Therefore, the fins can be connected together by joining each first bent plate to a second bent plate of the next fin in an overlapping relationship.


REFERENCES:
patent: 5111877 (1992-05-01), Buchanan et al.
patent: 5509465 (1996-04-01), Lai
patent: 5563285 (1996-10-01), Blount
patent: 6062301 (2000-05-01), Lu
patent: 6336498 (2002-01-01), Wei
patent: 6382307 (2002-05-01), Wang et al.
patent: 6401810 (2002-06-01), Kuo et al.
patent: 6449160 (2002-09-01), Tsai
patent: 6474407 (2002-11-01), Chang et al.
patent: 6550529 (2003-04-01), Horng et al.
patent: 2002-246521 (2002-08-01), None
Derwent ACC No. 1991-049299 “Perforated Metal Fins for Air-cooled Heat Sink” c. 1999.

Affiliated with

Also associated with

Rating

Heat sink does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Heat sink, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Heat sink will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3122041