Heat exchange – Heat transmitter
Reexamination Certificate
2006-05-09
2006-05-09
Leo, Leonard R. (Department: 3753)
Heat exchange
Heat transmitter
C165S080300, C165S121000, C165S146000, C174S016300, C257S722000, C361S697000, C361S704000
Reexamination Certificate
active
07040388
ABSTRACT:
A heatsink of the present invention has a column having a heat conducting plate with a heat receiving face contacting a heat producing element. On the side faces of the column are a plurality of first slits disposed parallel to the heat receiving face and a plurality of second slits disposed transversely to the heat receiving face. These slits form a plurality of pillar-type protrusions functioning as fins for cooling. At least one of cross sections of the column has a shape of a rectangle, a trapezoid, a triangle or a shape which tapers off as it goes away at right angle from the heat receiving face. A method of manufacturing the heatsink of the present invention includes first and second processes. In the first process, the first slits are formed by providing a plurality of metallic plate fins on the column along its length by the methods including the extrusion molding using a metallic mold. In the second process, the second slits are formed in a direction approximately transverse to the length direction of the plate fins. By using a specialized jig for the machining of the second slits, many fins can be formed remarkably efficiently. A cooling apparatus for the present invention includes a cooling means mounted on the heatsink of the present invention. The cooling apparatus for the present invention enjoys a high cooling capability and reduced size.
REFERENCES:
patent: 3149666 (1964-09-01), Coe
patent: 3163207 (1964-12-01), Schultz
patent: 3220471 (1965-11-01), Coe
patent: 3421578 (1969-01-01), Marton
patent: 4292647 (1981-09-01), Lee
patent: 4369838 (1983-01-01), Asanuma et al.
patent: 4449578 (1984-05-01), Munekawa
patent: 4777560 (1988-10-01), Herrell et al.
patent: 4823869 (1989-04-01), Arnold et al.
patent: 4879891 (1989-11-01), Hinshaw
patent: 4918571 (1990-04-01), Grabbe
patent: 5132780 (1992-07-01), Higgins, III
patent: 5181313 (1993-01-01), Nonnemacher et al.
patent: 5195576 (1993-03-01), Hatada et al.
patent: 5353863 (1994-10-01), Yu
patent: 5486980 (1996-01-01), Jordan et al.
patent: 5576932 (1996-11-01), Bishop et al.
patent: 5598322 (1997-01-01), Von Arx et al.
patent: 5647430 (1997-07-01), Tajima
patent: 5677829 (1997-10-01), Clemens
patent: 5740014 (1998-04-01), Lin
patent: 5748445 (1998-05-01), North et al.
patent: 5775418 (1998-07-01), Lonergan et al.
patent: 6533028 (2003-03-01), Sato
patent: 1026013 (1978-02-01), None
patent: 124861 (1977-03-01), None
patent: 0206980 (1986-12-01), None
patent: 0706212 (1996-04-01), None
patent: 1135978 (2001-09-01), None
patent: 50-94884 (1975-07-01), None
patent: 54-025168 (1979-02-01), None
patent: 62-182600 (1987-11-01), None
patent: 63-187343 (1988-11-01), None
patent: 2-73697 (1990-03-01), None
patent: 4-117458 (1992-10-01), None
patent: 4-294570 (1992-10-01), None
patent: 5-218245 (1993-08-01), None
patent: 05-259323 (1993-10-01), None
patent: 6-9144 (1994-02-01), None
patent: 6-61667 (1994-03-01), None
patent: 07-183432 (1995-07-01), None
patent: 08-316389 (1996-11-01), None
patent: 10-092985 (1998-04-01), None
patent: 10-242352 (1998-09-01), None
patent: 11-047960 (1999-02-01), None
patent: WO 97/35460 (1997-09-01), None
Fujiwara Yasuhiro
Kamizuru Shinobu
Manabe Seiji
Sato Kaoru
Leo Leonard R.
Matsushita Electric - Industrial Co., Ltd.
LandOfFree
Heat sink, method of manufacturing the same and cooling... 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, method of manufacturing the same and cooling..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Heat sink, method of manufacturing the same and cooling... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3547596