| 摘要 |
<p>A lumbar cushion for seats, chairs and the like, comprising a horizontal elongated body (15; 115; 215; 315) which is shaped with a front convexity to match the body surface of a person having a proper lordosis at lumbar vertebrae; said body being either independent of or integral with a chair-back. Such a cushion, connected to arms determining its correct position, is sustained by a support element (10; 102; 202; 353) of chair-back or the like and it is height adjustable with respect to the latter by adjusting means with tightening screws (21a, 21b, 27; 121a, 121b, 127) or with gears (221a, 233-237; 337, 343-351; 343', 354-357), or springs, cylinders, etc. which can be either manually or automatically controlled.</p> |
