Abstract: A finished workpiece of malleable metal containing a saw cut which does not require deburring because the small burr on the exit side of the cut is concealed within a three sided notch. An elongated notch, closed on three sides, is formed on the side of the blank workpiece from which the saw blade exits. The depth of the cut is adjusted so that the bottom of the cut, together with its attendant burr, intersects with the notch. The burr is thus attached to a wall within the notch. The width of the notch is adjusted so that the anticipated tolerance in the depth of the cut (and thus the location of the bottom of the cut) is accommodated. The width of the notch is such that the bottom of the cut will intersect the notch at any location within the anticipated tolerance envelope. The depth of the notch is sufficient to conceal the burr.

Abstract: A heat sink adapted to dissipate heat from an electronic component wherein a plurality of heat dissipating perforated fins project generally outwardly from a planar base and are spaced apart by channels therebetween. The height of the perforated fins to the width of the channels is at least about 8 to 1. The perforations through the fins are such that the flow of cooling fluid through the fins generally emulates the flow through a comparable pin grid array heat sink. The fin structure is such that the fin is structurally supported against deformation, particularly during cross-cutting operations.

Abstract: A two piece spring clip for holding a heat dissipating assembly together. The spring clip includes an elongated leaf spring member having a free end and a leg segment remote from the free end, and a separate leg member. The free end and the separate leg member define therebetween a leg engaging mechanism and are hingedly engaged with one another by the leg engaging mechanism. A bearing element is mounted on one of the free end or separate leg member. The bearing element bears on the free end or separate leg member to which it is not mounted so as to limit the arc through which the separate leg member may hingedly swing. Several bearing elements may be provided, if desired.