Cable ladder
AssigneeUnex Aparellaje Electrico S.L.
InventorJose Antonio Mostazo Oviedo
Life of this patent
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Abstract
A cable ladder formed by two side rails and crosspieces, all formed of extruded polymer material. The side rails have a channel receiving a corresponding end of the crosspieces. The channel has a lower rib and an upper rib. A projection of the lower rib or upper rib has openings along a longitudinal direction of the side rail. The ends of the crosspieces go through the opening of the projection and have a recess in which a corresponding portion of the channel is snap-fitted. The lower rib of the side rails is bent over itself along a bending line, such that a final section of the lower rib experiences downward expansion by elastic bending when the end of the crosspiece is introduced.
Claims14
A cable ladder comprising:
- two parallel side rails attached to one another by a plurality of parallel crosspieces spaced from one another, said plurality of crosspieces forming a discontinuous support surface for cables,
- wherein each of said crosspieces is an extruded profile made of a polymer material,
- wherein each of said side rails is an extruded profile made of a polymer material having, on an inner side thereof facing the other side rail, a channel receiving a corresponding end of said crosspiece,
- wherein said channel is demarcated by a lower rib and an upper rib, said lower rib or said upper rib having at an end thereof a projection extending towards an inside of said channel, and a plurality of openings spaced from one another along a longitudinal direction of said side rails being formed in one of said projections,
- wherein each of two ends of each of said crosspieces is formed such that each end goes through one of said openings in the projection of the corresponding side rail and tightly fits in said channel of said side rail,
- wherein said channel in the inner side of each side rail and the two ends of each of said crosspieces are formed such that each of said ends fits and is snap-fitted into said channel of the corresponding side rail,
- wherein each of said ends of said crosspieces is provided with at least one recess in which a corresponding portion of said channel of the side rail is snap-fitted, and
- wherein and said lower rib of said side rails is bent over itself along a bending line, such that a final section of said lower rib is a free end section which undergoes a slight lowering by elastic bending with respect to said bending line, said slight lowering by elastic bending widening said channel of the side rail during introduction of the corresponding end of the crosspiece.
Dependencies are inferred from the claim text.