Abstract: A filler module is slidably mountable in an otherwise unused slot of a multi-slot, multi-module electronic system housed in a casing. The filler module includes a relatively compact housing which engages an EMI gasket and an electric connector in an unused slot at the backplane of a shelf in the casing. The module also includes a non-conductive, rigid extension element which facilitates air flow between adjacent modules within the rack. The extension element may include electrically conductive strips which provide ESD protection during the insertion of the module through intimate contact with a grounded, resilient contacting surface. The module may also comprise a non-conductive bulkhead with pivoted latches which engage the casing to secure the housing to the backplane. In this way, a filler module is achieved in which EMI containment is accomplished in a modular fashion and air flow is maintained in the shelf independent of the number or position of used and unused slots.

Abstract: An electronic assembly of two planar electronic devices for insertion into a shelf for back plane connection. Each device may be a printed circuit board or a circuit pack incorporating such a board. A flexible flat cable extends between front ends of the devices to interconnect their circuitry. This cable is torsionally flexible to allow relative pivoting movement of the electronic devices in their respective planes. The cable is also bendably flexible to allow movement towards each other or apart of the rears of the electronic devices. A movement limiting device restricts the degree of relative movement of the electronic devices. The relative movement overcomes tolerance issues between terminal positions of one device relative to the other during connection into the back plane and damage to terminals and connectors is avoided.