Abstract: A retainer for retaining an electronic module, such as a printed circuit board, in the slot of a casing. Oppositely oriented wedge-shaped elements are slidingly received on a rail in a manner which prevents rotation of the wedge-shaped elements about the rail. A pivotable lever having a cam surface is provided such that rotation of the lever actuates the retainer by compressing the wedge-shaped elements. In one embodiment, the lever is provided with a projection which engages the casing to extract the module when the lever is pivoted to release the retainer.

Abstract: A device for aiding insertion of a printed circuit card into, and removal of the card from, a receptacle, the card having electrical connectors along a first edge and the receptacle having a control member located to be adjacent a second edge of the card, opposite the first edge, when the card is inserted in the receptacle, the device comprising: an insertion-extraction lever pivotally mountable on the card at a pivot axis located between first and second arms of the lever, for pivotable movement between locking and extraction positions, the first lever arm being formed to cooperate with the control member when the card is inserted in the receptacle such that movement of the lever into the locking position causes the first lever arm to engage the control member to lock the card in the inserted position, and movement of the lever toward the extraction position causes the first lever arm to cooperate with the control member to move the card in a direction for removal from the receptacle; a catch mountable on th

Abstract: A retainer for retaining an electronic module, like a printed circuit card, in the slots of a cold plate or other holder, comprising a rail mounted to either the module or holder. An end wedge is fastened to one end of the rail so as to provide a stop for other, typically wedge-shaped bodies, slid onto the rail. Both the rail and wedge bodies are particularly configured so that the wedge bodies remain aligned, or are precluded from rotating about the rail or otherwise becoming misaligned. The present invention thus provides an easily assembled retainer, which avoids the use of specially manufactured free-floating screws.