摘要 |
<p>The unit (1) has a lower seat structure (2) stationarily fixed at a base part, and an upper structure (3) at which a seat is attachable. The upper structure is rotatable or lockable against the lower seat structure by a locking unit (24). The structures have circulating support frames (2a, 3a) as support element from prefabricated profiles (5-9, 11, 12) that are cut to lengthable meter goods. The support frames are rigidly formed by the profiles or interconnected profiles to form a closed force ring. An independent claim is also included for a rotary seat with a turning unit.</p> |