Abstract: A double-sided central electronics complex (CEC) is provided for increasing the logic card density in a logic cage or CEC. Specifically, two logic cages or sub-enclosures are integrated, sharing one backplane card so that logic elements may be plugged into the CEC from both sides. The CEC is formed by unitary sheet metal side plates, top and bottom cast or guides and a single double-sided backplane assembly.

Abstract: A side-by-side double row of electronics packages plug into a common backplane. Cooling air flows in an (upside down) omega-shaped path turning into one row of packages, flowing through that row, turning through an air-moving device into a plenum chamber, then turning into the second row of packages, and out of the second row turning again to an outlet.

Abstract: A double-sided backplane assembly is provided for increasing the logic element density in a logic cage or CEC. The backplane assembly is multi-layered with a backplane card centrally located between a stiffener and an EMC shield affixed to each side thereof. Connectors for connecting logic elements to the backplane card are provided on both sides of the backplane card, so that a logic cage having two sub-cages may be provided, the two sub-cages sharing the one backplane assembly.

Abstract: A structure is shown having three stages for guiding a system component into an operatively mounted position within an enclosure while simultaneously making a blind attachment of the electrical connectors to complete the power and signal circuits between the component and system contained within the enclosure. A coarse positioning structure includes a guide rail means for directing the component toward the operative, mounted position; an intermediate positioning structure functions within the tolerance of the coarse positioning means to substantially align the component including the electrical connectors and a fine positioning means aligns the electrical connectors for the final positioning as the component is latched into the operating position and electrical connections are completed. The three positioning functions are intitated serially.

Abstract: A pluggable assembly for enclosing printed circuit cards used in electronic devices. The enclosure is completely shielded and is particularly adapted to use in circumstances where unskilled persons either plug or unplug the assembly into a backplane assembly.

Abstract: A plugable interposer assembly for enclosing printed circuit cards used in electronic devices and accommodating the connection of cables and additional printed circuit card enclosures. The enclosure is completely shielded and is particularly adapted to use in circumstances where unskilled persons either plug or unplug the assembly into a backplane assembly.