| 主权项 |
1. A hall, in particular a multipurpose auditorium, as a general rule bounded by essentially vertical walls and equipped with a set of parallel horizontal beams supporting seats (1) respectively covered with lining panels (2), each of these beams (1) having independent load-bearing units (3) respectively comprising a group of seats mounted side by side (4) on a common base (5) and being fitted with lifting means (7, 8) by which they may be moved vertically, each of these load-bearing units (3) being equipped with tilting means (9) whereby the groups of seats (4) are moved between a deployed position above the lining panels (2) of the load-bearing beams (1) and a retracted position below the panels, in such a way that the hall can be arranged in a stepped configuration or a flat configuration in which the lining panels (2) of the load-bearing beams (1) are located in the immediate vicinity of each other in the same plane,
characterised in that the tilting means for the groups of seats (4) comprise for each of the independent load-bearing units (3) at least one pantograph mechanism (9) comprising a fixed support (10) of one piece with the load-bearing beam (1) and a movable support (11) of one piece with the load-bearing unit (3) and the group of seats (4) together with a control linkage whereby the group of seats (4) is moved between the deployed position and the retracted position by rotation about the fixed support (10). |
