CABLE DUCT Russian patent published in 2009 - IPC H02G3/04 

FIELD: electricity.

SUBSTANCE: duct for power supply, data exchange and information transfer cables (including in particular fibre-optic ones) to be laid along walls or flooring structures of subsurface pipelines, channels etc designed for water or waste water transport; the cable duct design enables insertion into a pipe etc from the ground surface through an access hole with subsequent attachment to the channel wall or flooring structure. The cable duct is composed of mutually identical longitudinal sectional elements (10) of the cable duct that are arranged successively in an axial direction (r1) with their ends sequentially connected so that to enable lateral angular displacement round the perpendicular axis (as). Each of the above sectional elements is composed of two overlapping plates (2, 2') that are interconnected and rigidly fixed parallel to each other via a centre-positioned crossbar (3). The laterally open cavities (20, 20') positioned on either side of the crossbar (3) between the overlapping plates (2, 2') designed to subsequently accommodate the cable (6) are to be covered on both sides with side continuous cover bands (51) positioned on either side. On the band longitudinal edges (51) there are the elements arranged (52) enabling form closure connection to the corresponding counter elements (22) to provide for form closure along the longitudinal edges (21) of the sectional element (10) overlapping plates (2, 2'). The bands are designed to provide for form closure and fabricated of a flexible material. As a result two continuous enclosed longitudinal cavities (200, 200') are constructed, separated with crossbars (3) of the sectional elements (10). The cavities are intended to accommodate the cable (6) and stretch along the whole of the cable duct (1) composed of sectional elements (10) interconnected so that to enable angular displacement.

EFFECT: maximisation of cost-efficiency of modular construction of a cable duct, either horizontally or vertically positioned.

11 cl, 7 dwg