Metal deforming – By extruding through orifice – With cutting
Patent
1989-06-05
1989-11-14
Moon, Charlie T.
Metal deforming
By extruding through orifice
With cutting
291573R, 29558, 83303, 165 803, 165 804, 361383, B21C 2300
Patent
active
048798916
ABSTRACT:
Unitary heat sink apparatus for use in removal of heat from a heat generating component is disclosed which includes a heat sink body formed by extrusion. Parallel fins extend outwardly a first predetermined distance from the heat sink body and are separated by a first predetermined number of grooves of a first predetermined depth and width. The ratio of the height of the fins to the width of the grooves is approximately four to one. The first predetermined number of parallel grooves are gang sawed to a second predetermined depth to provide a second and greater predetermined height to the parallel fins such that the new ratio of the second predetermined height of the fins to the width of the parallel grooves is increased to at least six to one. In another embodiment, the heat sink is then rotated ninety degrees and a second predetermined number of grooves are gang sawed at right angles across and through the parallel fins to provide a predetermined number of pins extending outwardly from the heat sink body.
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IBM Technical Disclosure Bulletin-vol. 11, No. 10 Mar. 1969 (by J. R. Bryden).
Moon Charlie T.
Thermalloy Incorporated
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