Improved electrical connection extension device, consisting of a winding reel of the conductor cable, housed with the ability to turn in an enclosing box, through which comes an end of said cable, while its opposite end is located linked to the core of the reel; the reel being also connected to the box by means of a spiral spring, cable winding recuperator; its action interfered with by a selective brake device; it is essentially characterized in that the cylindrical core of the reel is constituted by two parts (1-2) axially coupled together, each of whose parts is integral with one of the discs (3-4) of the reel presenting one of the discs of the reel, coupled externally, parallel parallel-axial prongs (5-6) constituting a plug, whose prongs are connected respectively to the poles (1-8) of one end of the (9) cable (10), through this end radially between both parts (1-2) of) hollow cylindrical core constituting the reel throat; while the other disk (4) of the spool, has outwardly, protruding, a wall (11) determining an axial cylindrical box (12), which is housed spiral spring (13) with its outer end ( 14) hooked in a groove (15) of said wall (11), whose wall externally establishes an oblique tooth wheel (16). (Machine-translation by Google Translate, not legally binding)
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