(57) An extension cord of flat cable (11), particularly for undercarpet use, comprising
a strip (16) of insulated conductors (17) located for relative longitudinal sliding
movement in a stiffly flexible sleeve-form shield strip (18) mounted at opposite ends
in rigid outlet supporting housings (12, 13) with the conductors (17) terminated to
leads of the outlets (14,15). At one end of the cable (11), both the shield strip
(18) and the conductor strip (16) are fixed to the housing (13) preventing relative
longitudinal movement, whilst, at the other end, only one of the strips (16 or 18)
is fixed to the housing (12), the other strip (18 or 16) being free to move relatively
longitudinally during a change in the extension cord from reeled to flat condition,
thereby avoiding straining the terminations or buckling the cable (11). In one example,
the shield strip (18) is fixed to the housing (12) and the individual conductors (17)
of the conductor strip (16) are connected to leads of the associated outlet (15) by
flexible metal bands (47) bowed perpendicularly to the plane of the strip (16).
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