Abstract: In a locking latch assembly for mounting an electronic component drawer in a rack a clamping ring 30 is provided with plug and socket elements 46, 48 adapted to cooperate with a dynamometric key. An all metal hollow cylindrical spring cushion 44 is received within the cup-shaped clamping ring, a support stud 32 formed integral with the clamping ring 30 supporting the interior surface of the spring cushion along a portion of the axial extent thereof. The free end face of the spring cushion 44 forms a thrust bearing cooperating with a latch ring 52 adapted to receive a latch hook 60 fixed to the drawer. The clamp ring 30 runs on a threaded bolt 22 being in turn pivotally connected to drawer support rails 12 through a pivot pin 18.

Abstract: A tool for extracting an electronic slide-in unit from a fixing rack comprises a handle (50) the free end of which carries an elliptic cam member (48). The latter is adapted to be inserted between a front plate (38) of the slide-in unit (16) and a rail (24) of the rack and is dimensioned such that pivoting of the tool causes the front plate (38) to move away from the rack by a distance sufficient to completely overcome the clamping forces of connectors provided on the rack and the slide-in unit, respectively.