| 摘要 |
The invention concerns a seat characterised in that said base (3) forms a single-piece body whereof the upper part comprises two longitudinal streamlined lateral flanks (3.2) defining between them a streamlined intermediate strip (3.5) extending over the whole base length, said lateral flanks being in a raised position relative to the intermediate strip. The lateral flanks are arranged in their inner portion adjacent to said intermediate strip with an upper pair of housing means and a lower pair of housing means consisting of vertical cavities (3.1) forming passages arranged in the thickness of the inner flanks (3.2). Said cavities are extended at their base by shaped recesses (3.3) arranged in the thickness of said base flanks and enable, after means (2.1-2.2) in the form of guide pins have been inserted on the seat of said cavities, said means to be moved along the recesses. |
