Patent ID: 7483271

Claim:
Apparatus for mounting printed circuit cards to a chassis to assure maximum thermal transmission from the card to the chassis and for robust high-density card retention in the chassis to mitigate shock and vibration damage, comprising: a chassis having opposed upstanding walls, each of said walls including at least one slot having a straight-walled face and an opposed chamfered face; a wedge having a matching exterior surface such that a chamfered surface on said wedge is adapted to cam against the chamfered surface of said slot, said wedge having an opposed flat surface; and, a screw actuator for drawing said wedge into said slot such that said wedge is cammed towards said straight-walled face, whereby when a printed circuit card edge is inserted between said wedge and said straight-walled face, and said wedge is moved towards said straight-walled face, robust edge contact with said printed circuit card is established to promote thermal transfer from said edge to said chassis at said straight-walled face, said slot including transverse apertures at the bottom thereof running perpendicular to said slot, said screw actuators extending through selected apertures such that upon tightening of said screw actuators, as said wedge moves towards said straight-walled face, said screw actuators move in said transverse apertures towards said straight-walled face with the cammed movement of said wedge.